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    50 Watt Stereo Hybrid Tube Amplifier with Bluetooth & Line Output
    Product # 16153
    In Stock This item should ship today (1/16/2018) if ordered within 2 hours 27 minutes

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    50 Watt Stereo Hybrid Tube Amplifier with Bluetooth & Line Output

    Compact Stereo Hybrid 50-Watt Tube Amp with Bluetooth

    Enjoy the sound, style, and convenience of a hybrid tube amp with Bluetooth®. This hybrid tube amp combines the warm, soothing sound of a tube preamp with the efficiency, power, and clarity of a 50 watts per channel solid state power amplifier. Stream your digital music to the amp using the built-in Bluetooth 4.0 radio with the superior sound of the Qualcomm® aptX™ audio codec. Enhance your sound by connecting a subwoofer to the RCA preamp outputs. Not only does this amp sound great, it looks great, too! The black panels, lighted VU meter, chrome accents, and the warm glow of the exposed tubes present a minimalist retro look, which will enhance any home or office environment with a hint of old school styling.


    Warm & Rich Sound | Simply Attractive | Bluetooth Convenience

    50-Watt Stereo Hybrid Tube Amp

    Sound Quality
    Sound Quality

    Sound Quality: Life is too short for audio products that don't sound great! We believe that the whole point of listening to music is to hear it as the artist intended. Our engineers and audio experts have spent countless hours listening to and comparing various amplifiers until we were satisfied we had found models that fit our demanding standards.

    Style: The polished piano black case, brushed aluminum face, lighted VU meter, and the warm glow of the exposed tubes combine to give this amp a sexy appearance that is at once both classic and futuristic.

    Versatile: Enjoy your music the way you want! Use the stereo RCA jacks to connect directly to a CD player or use the Bluetooth® v4.0 radio to connect wirelessly with your phone. Add a subwoofer by connecting to the RCA preamp outputs for even more room shaking sound. The Qualcomm® aptX™ audio codec ensures that your wireless streaming sounds as clean and clear as your wired connections.

    Bluetooth audio for grownups. Listen to music like you care about it.

    Compact Stereo Hybrid 15-Watt Tube Amp with Bluetooth

    Because of its lossy nature, digital music can often lose some of the depth and warmth that gives it life. Wireless streaming adds an additional layer of digital compression, which can further degrade the audio quality. The addition of the tube preamplifier stage adds back some of the warmth and richness, breathing new life into your digital music, while the Qualcomm® aptX™ audio codec ensures clean and clear Bluetooth® streaming.

    Qualcomm® aptX™
    Frequency Response

    • 50 watts/channel class AB power amplifier
    • Less than 0.1% total harmonic distortion
    • Qualcomm® aptX™ audio codec for clean and clear wireless streaming
    • 20Hz ~ 20kHz frequency response
    • Tube preamplifier stage with solid state power amplifier
    • Bluetooth® v4.0 wireless streaming
    • One stereo analog RCA input
    • One stereo analog RCA output
    • 5-way binding post speaker connections


    1 Year Warranty


    Monoprice not only stands behind every product we sell with a 1 year replacement warranty, we offer a 30-day money back guarantee as well! If the product you purchase does not satisfy your needs, send it back for a full refund.

    Quality at a Fair Price

    Quality at a Fair Price

    Monoprice's rugged design and rigid quality control standards deliver high quality products at fair prices.

    Hassle Free Packaging

    Hassle Free Packaging

    Monoprice exists to bring simplicity, fairness, and confidence to technology choices. This product features recyclable packaging that is simple to open, cost effective, with minimal waste, and fully protective as it travels to you.

    Service & Support

    Service & Support

    You're never on your own with Monoprice products! We have a full team of friendly and knowledgeable technicians available to answer your questions, both before and after the sale. Contact our technical support team for questions about our products, troubleshooting, or even suggestions for products to fit your particular needs. Not to be outdone, our friendly and helpful customer service team is here to make your ordering, delivery, and any possible returns a quick and painless operation, from start to finish!

    Frequency Response 20Hz ~ 20kHz ±2dB
    Total Harmonic Distortion ≤ 0.1%
    RMS Power Output (4-ohm load @1kHz) 53 watts/channel
    Peak Power Output (4-ohm load @1kHz) 75 watts/channel
    Output Impedance Range 4 ~ 16 ohms
    Input Impedance 47 kilohms
    Input Sensitivity 260mV
    Signal-to-Noise Ratio ≤ 88dB
    Treble Adjustment Range -10dB ~ +10dB
    Bass Adjustment Range -10dB ~ +10dB
    Input Voltage 100 ~ 120 VAC, 60 Hz
    Fuse Ratings F2AL / 125V
    Tube Types 2x 6N1 and 2x 6P1
    Bluetooth® Version 4.0 w/ Qualcomm® aptX™ audio codec
    Bluetooth Range Up to 32 feet (10 meters)
    Dimensions 11.3" x 12.0" x 5.9" (286 x 305 x 150 mm)
    Weight 11.2 lbs (5.1 kg)

    Support Files:

    The Bluetooth® word mark and logos are registered trademarks of Bluetooth SIG, Inc.

    Qualcomm® is a trademark of Qualcomm Incorporated, registered in the United States and other countries. aptX™ is a trademark of Qualcomm Technologies International, Ltd., registered in the United States and other countries. Qualcomm® aptX™ is a product of Qualcomm Technologies International, Ltd.

    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 65 questions Browse 65 questions and 131 answers
    Does anyone have any idea what brand and model the speakers in the picture above are? The ones pictured in the living room with silver bezel, ribbon tweet and carbon woofer? Love the look and would be a great compliment to this amp.
    Aaron P on Jan 26, 2017
    Just curious, how many watts is the amp is rated for @ 8 ohms?
    Philip E on Jan 22, 2017
    BEST ANSWER: 25 watts per channel @ 8 Ohms
    Problems I've had with the 25 amp model is a lot of hum and crackle from wired connections to the RCA jacks on the back of the unit. Has anyone had this issue with the 50 watt model?
    Garry C on Dec 30, 2016
    BEST ANSWER: I just received the 50 Watt Stereo Hybrid Tube Amplifier with Bluetooth & Line Output as a Christmas gift. Threw out packaging.
    I get a 60 Hz hum that I verified with a Peterson tuner. Usually this is a ground issue. Thoughts?Enter an answer to this question.
    Has anyone found a solid source for replacement of the 6N2 and 6P1 tubes? Google seems to reference possible comparable tubes but no solid "this will work" answer. I know they should last forever, I am just trying to do some homework before buying one.
    A shopper on Jan 12, 2017
    BEST ANSWER: I have the 25w version, and got replacement tubes at thetubestore dot com

    SKU : #NSV-SV83 x2
    SKU : #RU-6N1P x2

    Less than 50 bucks delivered, sounds WAY better, they answer all questions quickly and clearly!
    25 Watt Stereo Hybrid Tube Amplifier with Bluetooth (Refurbished)
    25 Watt Stereo Hybrid Tube Amplifier with Bluetooth (Refurbished)
    Hi, I was looking for a solution for a small condo living room. I was hoping to combine this AMP with a pair of in-wall speakers. Will the Amber 6.5-inch Carbon Fiber 3-way In-Wall Column Speaker with Ribbon Tweeter Product # 15700 work well, or is the amp not powerful enough? Would you suggest smaller speakers? Would you suggest adding a powered sub-woofer? Or a bigger AMP? How loud is 50wX2?
    Steve S on Dec 14, 2016
    50 Watt Stereo Hybrid Tube Amplifier with Bluetooth & Line Output
    50 Watt Stereo Hybrid Tube Amplifier with Bluetooth & Line Output
    Amber In-Wall Speaker 6.5-inch 3-way Carbon Fiber Column with Ribbon Tweeter (each)
    Amber In-Wall Speaker 6.5-inch 3-way Carbon Fiber Column with Ribbon Tweeter (each)
    BEST ANSWER: 50 watts by 2 is not that loud in my opinion. I am using a 150 watt by 2 channel amp for these speakers. If you desire bass with some presence than yes you will desire a subwoofer. I paired mine with an older JBL dual 8" sub being run with an additional 150 watt by 2 amp. Keep in mind that an amplifier is not supposed to be turned up beyond half way. If you do you will loose details in the sound and send distortion and possibly damage the speakers with the under power distortion. My personal opinion of these speakers is that they are very directional. You need to sit inbeteeen the two of them to get a good stereo image. I would prefer a slightly warmer midrange but for the money they are great speakers.
    Plugged in my record player and speakers. Insanely quiet. Same with Bluetooth. Do I need powered speakers for this to work??
    A shopper on Feb 27, 2017
    BEST ANSWER: You need a phono preamp between your turntable and the amplifier. Do a google search for phono preamp and you will find them from $25 and up.
    Tubes will need to be replaced once every one to two years. Where can I buy new tubes? Are these special monoprice tubes, or can I buy these in a specialised store?
    A C on Dec 3, 2016
    BEST ANSWER: This amp uses standard tubes; they can be found at various online outlets specialized in that kind of equipment. They will however last for longer than 1 or 2 years as they are used only in the preamp stage, and will not be subjected to excessive thermal handling like a full tube amplifier would. Lifespan will probably be in the 5000 hour range, that's quite a bit of music listening! Hope this helps!
    can the pre amp rca outs be used to a separate amp , so I'm just using the tubed preamp for my source? thx
    A shopper on Jan 7, 2017
    BEST ANSWER: yes. you can run the tubes here on board as a pre-amp controlling a separate 2 channel amp like a Rotel RB-1562 (for higher wattage like 2x 100w) just as my owners manual states "PRE OUT: Line level left and right RCA jacks for output to a powered sub woofer or other power amplifier. PRE OUT is effected by the front panel Volume control."
    great lil' amp as is but even better as a warm tube re-amp.
    Do I need a phono pre amp for this unit?
    A shopper on Nov 28, 2016
    BEST ANSWER: yes, you need a phono pre-amp. I own this unit and use it with the Bellari VP129. I absolutely love it!
    I own the 25 watt version of this amp. I'm wanting to know if I was to move to the 50 watt version, this one, If I would have a significant increase in ability to drive a pair of def tech 8020t speakers which have built in powered subs. I may be better sticking with the less powerful amp for now, if the difference is not very dramatic. Pre-amp outputs are not really needed for an external sub, given the 8020t's configuration. If It would be for an increase in presence when driving those speakers in the mid to high range, I might upgrade. Any input would help me to make a decision on this purchase. Can anyone advise?
    Paul C on Jan 24, 2017
    BEST ANSWER: Paul, I upgraded to the 50w because the 25 wwasn't powerful enough to drive the number of speakers in my house. I play my music very load something, while playing guitar with the record. Using theBlueTooth cuts down on power too. I had to put a power booster for my turntable. I have the volume cranked up all the way and I am not happy with the volume output. Hope that was of some help.
    I connected a CD player in the CD INPUT... The output level is extremely high.. do i need an attenuator between the CD and the amplifier?
    New User U on Jul 19, 2017
    BEST ANSWER: I ran into this problem. Please check the RCA cable make sure from CD to Tube amp CD input. I made a mistake hook up to the preamp out so when I play the CD the volume was very high.
    Has anyone had the opportunity to hear this amp with both the Retro and the 5 inch select speakers? I'm trying to choose which setup to buy and I would appreciate any input anyone has. I'm leaning towards the Retro speakers just because they have a smaller footprint and I plan to use this in my bedroom.
    Josh R on Mar 21, 2017
    50 Watt Stereo Hybrid Tube Amplifier with Bluetooth & Line Output
    50 Watt Stereo Hybrid Tube Amplifier with Bluetooth & Line Output
    Select 5.25-Inch 2-Way Bookshelf Speakers (Pair), Black Finish
    Select 5.25-Inch 2-Way Bookshelf Speakers (Pair), Black Finish
    Retro Bookshelf Speakers 4-inch 2-way, Black (pair)
    Retro Bookshelf Speakers 4-inch 2-way, Black (pair)
    50 Watt Stereo Hybrid Tube Amplifier with Bluetooth and 5-inch Select Speakers Bundle
    50 Watt Stereo Hybrid Tube Amplifier with Bluetooth and 5-inch Select Speakers Bundle
    Tube Amp System with Bluetooth 50-watt Stereo Hybrid with Retro Speakers
    Tube Amp System with Bluetooth 50-watt Stereo Hybrid with Retro Speakers
    BEST ANSWER: Josh, I'd recommend the 5" speakers. They have a higher sensitivity, which means they will play louder using less power. I also think the bigger driver will produce better results, even (or especially) at lower volumes. If the measurements are too big for your space that's one thing, but based on sound I'd lean toward the 5". Just imo.
    Advice on the best bookshelf speakers and powered subwoofer for the 50 watt Tube amp 16153?
    A shopper on Aug 27, 2017
    BEST ANSWER: The Klipsch R-15M as mentioned above works very well ( i also use these ), it can be enhanced with a 10 inch sub of your choice, that combo will have a sound that will surprise you
    Any plan to add headphone jack?
    A shopper on Mar 12, 2017
    BEST ANSWER: Thanks for your interest in this tube amp. To keep the price point where we wanted we removed the headphone jack. For proper biasing to headphones it adds quite a bit of cost. The extra power makes this more of room amp rather than a personal one like the 25W. Please look at the dedicated tube headphone amp with USB DAC and line out, 16154.
    Stereo Tube Headphone Amp with 24-bit/96kHz USB DAC, Bluetooth, and Preamp Out
    Stereo Tube Headphone Amp with 24-bit/96kHz USB DAC, Bluetooth, and Preamp Out
    What is the power output into 8 ohms?
    Joe H on Nov 29, 2017
    In the 15W version, the Bluetooth input is dramatically lower in level than the line-level input via RCA. Is this the case with this model (and in the most recent (May 2017) release? (and were there changes in the May 2017 release after being out of stock for a while?)
    A shopper on Apr 29, 2017
    Has anyone rolled tubes on this? If so, what difference did you notice?
    A shopper on Apr 13, 2017
    When not actively playing music, can this 50W tube amp be left on 24/7 or is it best to turn off when not in use to get decent tube life?
    Marcos V on Dec 19, 2017
    BEST ANSWER: In one sense tubes are different than transistors. The life of a transistor is shortened by the number of on/off and cold/hot/cold cycles it endures. It is best to leave them on all the time. Tubes are a bit like light bulbs. They have a specific amount of hours that they will burn before failing. So in general, it's good to turn off the amplifier after use.
    That said, remember that these tubes are for preamp only. the amplifier still uses a standard transistor output to run your speakers. Thus the "hybrid" title. These tubes are relatively small and put out very little heat so should last several years whether left on or off. The tie breaker here is probably that it will cost a bit for the power to leave them on 24/7/365.
    Does this have a ground connection?
    A shopper on Jan 7, 2018
    BEST ANSWER: No ground connection. I connected my turntable to my old 1969 Kenwood receiver then output low voltage thru the tape recorder out connection to the new tube amp. Then I connected the tube amp high voltage out to my subwoofer amp and satellite speakers. The sound is magnificent. Let me know if you have any further questions. Rich
    I have a pair of Pioneer Andrew Jones SP-BS22-LR bookshelf speakers and I'm a bit of a neophyte when it comes to this stuff. Will there be a noticeable difference in performance between this 50w model and the 25w one driving these speakers? Are there any other reason I should get this one over the 25w model?
    A shopper on Mar 23, 2017
    BEST ANSWER: All i know is that the Pioneer Andrew Jones SP-B522's are high efficiency speakers and so to my understanding is you don't actually need a high powered amp to drive them. I can't comment in noticeable difference between the two, since i don't own the Andrew Jones nor the 25w Monoprice to make actual comparisons.

    I have the 50 watt model hooked up to a pair of Paradigm monitor 3's and although they are a little bit undersized, they really fill up my mid-size bedroom with barely close to 1/4 on the volume control knob setting.

    If you are going to be using the amp in a living room or a wider area, then i would definitely suggest to get the 50 watt Monoprice. if a more bigger and robust sound is what you are trying to achieve..
    I am thinking of buying this and using it as a front channel amplifier for an AV 7.1 receiver with pre outs. Is this a suitable use for this amplifier?
    New User U on Feb 21, 2017
    BEST ANSWER: If you are planning to use this to drive your center channel, then it will work. Keep in mind that you would only use on of the channels which would leave you with only driving 25 watts to your speaker. This amp does not allow you to bridge the 2 channels together. If you are using this for your left and right front speakers, it will work. In a home theater it is better to have your channels match in various ways, such as power, speaker brands, timber, efficiency, etc.. Home theater demands have a greater peak need from a power perspective then listening to music. This amp performs well with Polk Audio bookshelf speakers playing AC DC's "Back In Black" on vinyl. I have not plugged any other speakers such as my tower speakers to see how they sound so I have no experience with a more demanding speaker. Hope this helps.
    Can I hook up to a old analog turntable?
    A shopper on Mar 12, 2017
    BEST ANSWER: yes as long as you do NOT need a grounding wire (green) and the turntable has an on board internal pre-amp (phono - line switch)
    ie: In the 1950s, the Recording Industry Association of America (RIAA) introduced an equalization standard that could be applied to the original audio as it was pressed into a record. This equalization, which continues to be used to this day, reduces low frequencies and boosts high frequencies, thereby compressing the audio so that more of it can fit on a record. During playback, the exact opposite function is performed through an RIAA preamp, resulting in the reproduction of the original audio.
    Are the two pre outs right and left channels and full range? Therefore would need to run right and left cables to sub and use the subs low pass filter?
    A shopper on Dec 24, 2016
    BEST ANSWER: The manual recomends to run one channel, but i run both.
    I want to connect the analog output of my tv to this. Can this be done?
    Paski P on Dec 2, 2016
    BEST ANSWER: As long as your TV has RCA outputs.
    Is it possible to run 4 bookshelf speakers (2 Pairs) off this unit? Each speaker is rated at 8 ohms.
    New User U on May 28, 2017
    BEST ANSWER: Yes, it is very much possible. By running 2 pairs of 8 ohm speakers from each channel will put a 4 ohm load to each channel which effectively (almost) doubles the output power. This unit, as specified, can handle 4 ohm loads per channel easily. It is much better and highly recommended, however, that high efficiency speakers be used with this unit (89db or greater) to get the greatest benefit(s) out of it...regardless if your running just 1 pr. of speakers on each channel or 2. The output section (solid state amplifier section) will have more headroom in which to operate. In other words, you would only need (for example) a quarter of a turn on the volume control to reach a comfortable volume level with more efficient speakers to where you may have to turn the volume control up halfway or more to get the same volume with less efficient speakers. Hope this helps.
    Can you pair more than one device on the Bluetooth input?
    James O on Apr 24, 2017
    BEST ANSWER: Yes you can. I bought small input distribution box for 4 applications: (very inexpensive) You can larger ones if needed.
    Hope that helped.
    how would this work with a pair of 5 in 100W 8ohm galaxy audio drivers (S5N-8)?
    A shopper on Jan 2, 2017
    BEST ANSWER: You'll be surprised at the backbone of this amp; incredible range and solid bass. I can't speak specifically to the galaxy audio driver but I have paired it with Klipsch Heresy's and my 2016 Klipchorns and been impressed. Their is a huge difference in the power of the MP 50w and 25w tube amps.
    Does it have a remote?
    A shopper on Nov 29, 2016
    BEST ANSWER: It does not. Not really needed. If you stream from a blue tooth device, you can control that.
    does this have a ground connection?
    New User U on Jan 7, 2018
    BEST ANSWER: Yes, this unit uses a three prong grounded cable. It is actually the exact same cable as used by most Desktop PC's. I purchased three of these as gifts and am are thrilled with there performance and looks.

    Mark A. Fillmore A+, Net+, MCP
    Will this amplifier work in Europe (230V, 59 Hz)?
    A shopper on Nov 15, 2017
    BEST ANSWER: Possibly, looking at the rear plug under underneath it there’s a pop out plastic cover with symble of a line or bar with two circles at each end . I think that’s how the Plugs look over their ? Anyway underneath the symble it says 230v but it’s hard to read .
    Mono should have the manual available for download or viewing and it should tell you in there I would think ?
    4.5 / 5.0
    92 Reviews
    5 Stars
    4 Stars
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    1 Stars
    Amazing Sounding Amp!
    At first I was skeptical that a tube hybrid amp at this price point would deliver. I must say, I'm extremely impressed! First, the overall design of this unit is impressive and the 50w upgrade works well for my application. I'm using an old pair of B&W 610s and streaming from my iPhone for music. The EQ is responsive and the Bluetooth works well at close to moderate range. The real test for this unit is tube replacement. I ordered a new pair of JJ E88CC's as a replacement for the stock 6N1. They are a high quality tube and seem to work well. I tried using a pair of Mullard EL84s as a replacement for the 6P15s. The Mullards do not work on this unit, so I would recommend keeping the stock 6P15s or upgrading eventually. For guitar players I use my BOSS JS-10 processor into the CD input. This setup sounds absolutely amazing for home practice and recording.

    PROS: Great sounding hybrid tube amp at this price point. Simple design and looks very cool. Bluetooth works well. Sturdy construction with a quality feel.

    CONS: There is no mention of brand/country of origin for the tubes. My guess is China, but I could be wrong. For a hybrid unit like this, the tubes are absolutely essential. It would be helpful if Monoprice indicated the brand of tubes and sufficient information for tube replacement. Eventually the tubes will burn out and this may leave some some customer asking what to do next....
    February 11, 2017
    Great Hybrid Tube Amplifier, especially for the price.
    I had purchased Monprice's 25W hybrid amplifier, but I wanted a bit more power to drive a pair of old Bose OmniVbector speakers. While very pleased with the 25W amplifier, I think that the build quality of the 50W version is a bit better (e.g., the volume knob/potentiometer is much smoother, black anodized front panel, etc.). I replaced the Chinese 6N2 tubes with SOVTEK 12A7WA (matched pair) tubes and will replace the 6P1 tubes with Svetlana 6P1P-EV tubes, that I have on order. The sound is great, even through the Bluetooth receiver. Connect to a Bluetooth 4.0 compatible device for the best sound.
    December 24, 2016
    1 year ago
    It Just Works
    Mine is used with Klipsch - Reference 5-1/4" Bookshelf Speakers ( r-15m) and I am more than happy.

    First sound stage in this combination is very nice.

    The 50 watts is way more than enough for even party level listening

    The sub out and Bluetooth connectivity is a real convenience benefit.

    Be aware that once Bluetooth is connected, every time you walk in the room the system will announce that you are connected.

    I use these Klipsch speakers as my rear speakers in a 5.1 home system. With this amp I can take these speakers anywhere and I have stereo music ready to go.

    I have also driven my 20 year old Mission Argonauts 4 ohm tower speakers with this amp and was amazed, once again great soundstage and clarity.

    Bottom line it just works
    December 13, 2016
    1 year ago
    Couldn't ask more for that price!
    I wasn't sure what to expect from a 200$ amp and i'm blown away. Wasn't sure it would sound good enough to replace my 1k Marantz and to be honest I definitively prefer this sound, and obviously the look! I didn't need all the connectivity and features of my previous amp, everything is driven from my PC so I really only need a power amp and this one is perfect for my needs!
    December 7, 2016
    1 year ago
    Great product
    I owned the predecessor to this unit, the silver 25W per Ch version PID13194. I loved it and considered buying a second one for my family room. At almost the 11 month mark, the bluetooth would not connect. I obtained return authorization and got a full refund.(great service from Monoprice) I immediately bought the current version. The product is a great little amp and it has a warmth that makes my Audioengine P4 speakers sound great. I took this system to my office and man, what a great sound in my office. Co workers are amazed when they hear it. I even suggested it to a friend, and he is equally impressed with his.
    I also hooked them to a pair of floor standing Klipsch Reference Premiere RP-260F speakers and the amp powered them to impressive levels will a great degree of detail and bass and smooth mids and highs... This also has a line output to hook up a sub, which I'll probably do in the future..I'll admit, I am a bit of a "tube-o-phile". I own an Audio Research Ref5SE and GS150 amp in my big system. Yes, this little guy does not come close to 30+K of gear, but it makes a fantastic small room or office system. And the look with the tubes is an attention getter. I love the black faceplate.......Highly recommended.
    January 15, 2017
    1 year ago
    High Fidelity Refinement On A Beer Budget
    I was very skeptical about this integrated amp. I call it an integrated amp because it does have two inputs - one for a CD and Bluetooth. Turns out, there is a lot to love in this tiny package.

    First of all, the item arrived three days earlier than expected. Unboxing was typical - the unit did not come double boxed but had the foam bumpers on each side to protect it while in transit. Everything was wrapped and there was that nice plastic film to rip off the shiny bits. I had it up and running in less than five minutes and that included the time it took to pair it to my phone.

    Let's also explain that this is not a full tube amp. Only the pre-amp input section is tube based (ie; any sound coming in gets tube treatment before being amplified). The actual amp section is class AB according to the manual. They work very well together so do not be fooled. You are getting a really nice setup for very little coin in the audio world

    Out of the box impressions are simply amazing. The sound is smooth as butter with slightly muted but, present highs. Rich and warm mids with good extension on the bottom. Right now, I just have it paired to my phone and I'm very impressed with it. I'll be adding a Yamaha WCX-50 pre-amp that will plug into the cd input which will allow for more flexibility as the pre-amp supports LAN streaming from a NAS or any of the internet radio services.

    Currently, I have a Martin Logan Dynamo subwoofer connected to it but, it's really not needed if you have a nice pair of speakers (keeping in mind "nice" is subjective). I'm running Dynaudio X-14 bookshelf speakers and they sound really good with this amp. A subwoofer will fill out the lower frequencies for sure but, it's not absolutely needed. If you are on a budget, check out the Elac Debut B6. For someone on a tight budget, they would be a great speaker that would not require a subwoofer. Of course having a sub is going "complete" the sound stage.

    I've listened to a few rocks songs (Nickelback, Puddle of Mudd, Rolling Stones) and some standards from Renee Olstead and Sara Gazarek. I was quite impressed with The Rolling Stones' "Can You Hear Me Knocking" and "Dead Flowers". The sound stage was broad and had plenty of depth. It handles all genres very well. What really blew me away was listening to Morgan James tribute to Nina Simone. This is a live recording with little bits of ambience and which are faithfully reproduced by this little amp. I was easily transported to Dizzy's where it was recorded. In between songs, I could hear the tinkling of wine glasses and silverware. The sound was precise, openly free and airy. The placement of each performer was well defined to the point I could picture where the drummer was, where the bass player was, where Morgan was standing when singing. It all pulled together to make a very enjoyable listening session.

    So, where does the amp fall short? It's definitely lacking punch. It's rated at 53 watts/channel per manual specs but, it probably falls closer to 30 - 35 watts at 8 ohms. This is not a bad a thing because you get to hear music at nearly full volume without distorting. I can't really ding the amp too hard for lacking the punch because it does not really need it. Just know you are not going to supply music to the whole complex or next house party. For the money, you are getting high fidelity refinement on a beer budget.

    Lastly, I was not provided any compensation for this review. It's is my honest opinion and I paid for this unit with my own money
    February 25, 2017
    Awesome amp!
    I've been wanting to try a tube amp for a while and the price point on this one got me to jump. It replaced an Audioengine N22. My desktop system consist of a Surface Pro 3 with an Soundblaster E5 DAC. Speakers are NHT Superzero 2.0's and an NHT Super 8 powered sub. I bought the 16153 because of the extra wattage and the pre-outs for the sub. I noticed an immediate difference between the Audioengine and the MP tube. Sound was much warmer and clear. There was a problem though, there was a significant hum coming from the speakers. Not noticeable when listening to music but very noticeable when the music stopped. It went away when I disconnected the RCA cable from the DAC. It was a ground loop issue. The Soundblaster DAC also outputs optical so I used an optical cable to an optical to analog converter and that fixed the problem. Total silence now and even better clarity. Very happy.

    PROS: Great price, good power, powers my Superzeros without any problem, sounds good with Bluetooth too.

    CONS: No headphone jack
    March 11, 2017
    I was skeptical when I first saw this amp at this price point. I have been using it for about three weeks and have been blown away with the sound that it produces. I a using a pair of Onkyo bookshelf speakers with the Monoprice Premium Select 8-inch 200-Watt Subwoofer, Product # 14567. The sound is clear and well defined. I would definitely recommend both the amp and the sub. They both are of excellent quality.
    January 13, 2017
    1 year ago
    Very happy with this unit, looks cool, sounds great!
    When I first got the unit I plug the unit into my Bose Wave Radio and got some hum at very low volume levels. I called customer service at Monoprice and got awesome support. They said return it and we'll send a new one.

    Before sent it back I plugged the amp into the same 120 VAC plug that my Bose unit was plugged into and the noise totally went away. Must have had some type of ground loop.

    Playing Pandora via bluetooth from the phone works great.

    Over all I'm very happy with the purchase.
    December 26, 2016
    1 year ago
    Great sound reproduction for an unbeatable price... nothing else comes close.
    Highly recommend this product over similar products. Ample power and range - can't beat the price. Spend the extra and get the 50w.
    January 2, 2017
    1 year ago


    In Stock This item should ship today (1/16/2018) if ordered within 2 hours 27 minutes