Unity 200-Watt Bridgeable Power Amp
    Product # 18514
    $159.99 $179.99 On Sale 11.11% OFF
    Wattage: 200W
    100W 200W
    In Stock This item should ship today (9/22/2017) if ordered within 7 hours 15 minutes

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    Unity 200-Watt Bridgeable Power Amp

    Multiroom audio systems are in high demand these days. Homeowners and businesses have their own idea of what they want. Sometimes the all-in-one does not meet the need of the client.

    This 2-channel class D power amplifier features a stereo speaker output, with support for 4-ohm and 8-ohm speakers. It can deliver 100 watts per channel into 8-ohm loads or 125 watts per channel into 4-ohm loads. Additionally, the output can be bridged to provide 225 watts to a single 8-ohm speaker. It includes a buffered loop line output of the original signal for driving another power amplifier in distributed whole house audio systems. The amp can be configured for always on, signal detection, or triggered power on status. It also includes a 12-volt trigger output for controlling other devices.


    • Class-D amplifier providing 100 watts/channel (RMS) into 8 ohm loads or 125 watts/channel into 4-ohm loads
    • Bridgeable output provides 225 watts into a single 8-ohm load
    • 4-pole detachable speaker screw connector (Phoenix connector) with support for up to 12 AWG speaker wire
    • 12-volt trigger input for power-on/off
    • 12-volt trigger output for controlling other devices
    • Buffered loop output of original signal for connection additional amplifiers
    • Rear panel volume gain adjustment
    • Built-in thermal and short circuit protection circuits
    • Includes rack-mount ears for mounting a single amp or two amps side-by-side

    Audio Bundle

    Model 18514
    Audio Inputs Stereo analog RCA line input
    Audio Outputs Buffered stereo analog RCA loop line output
    Output Power 100 watts/channel into 8 ohms with 0.1% THD+N or
    125 watts/channel into 4 ohms with 0.5% THD+N or
    225 watts into a single 8-ohm load with 0.2% THD+N
    Minimum Output Impedance 4 ohms in stereo mode
    8 ohms in mono bridged mode
    Trigger Input 12 VDC, 10 kΩ
    Trigger Output 12 VDC, 100mA
    Input Power 100 ~ 240 VAC, 50/60 Hz, 2.5A
    Standby Power Consumption ≤ 0.5 watts
    Dimensions 8.5" x 10..5" x 1.8" (216 x 267 x 45 mm)
    Weight 4.0 lbs. (1.8 kg)

    Support Files:

    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 14 questions Browse 14 questions and 29 answers
    If these specs are correct, I can power four(4) 8 ohm speakers off the two channels on the Unity 200-watt amp (4 ohm load), at 62.5 watts per speaker - which is 12.5 more watts per speaker than getting two(2) Unity 100-watt amps to power the same four speakers (50 watts @ 8 ohm load) while saving space in my rack - with the only draw back being the higher THD and perhaps higher heat from running the amp at 4 ohms? Am I thinking correctly?
    New User U on Mar 6, 2017
    Unity 200-Watt Bridgeable Power Amp
    Unity 200-Watt Bridgeable Power Amp
    Unity 100-Watt Bridgeable Power Amp
    Unity 100-Watt Bridgeable Power Amp
    BEST ANSWER: Thanks for your interest in these power amps. You are correct, you will get more power to each speaker using the 200W than 2 x 100W. 2 x100W will run cooler and more efficiently. Depending on your requirements and speakers the difference may be negligible.
    What is the frequency response of this amp?
    A shopper on Mar 21, 2017
    BEST ANSWER: Thank you for your interest in our amplifiers. This amp has a frequency response of 20Hz - 20kHz.
    I'm thinking about buying a 200w passive 10 inch in-wall subwoofer to complete my 7.2 setup would this work to drive a mono in-wall sub?
    Guillaume C on Feb 16, 2017
    BEST ANSWER: Finally got around to doing this, and it works very well.
    I want to install two of your ARIA IN-WALL SPEAKER 10-INCH SUBWOOFER PASSIVE 200W MAX into my 7.2 system. Can I use one of the 200w amps?
    New User U on Jul 2, 2017
    Unity 200-Watt Bridgeable Power Amp
    Unity 200-Watt Bridgeable Power Amp
    Aria In-Wall Speaker, 10 in Passive Subwoofer, 200 watts max (single)
    Aria In-Wall Speaker, 10 in Passive Subwoofer, 200 watts max (single)
    BEST ANSWER: Yes, you can. Since most receivers put out the same sounds to both subwoofer outlets, I currently use this amp in bridge mode, and then split the output off to both subs. You get more power to each speaker that way.
    I want to mount this amplifier vertically (on a wall behind a large flat screen TV.) Will there be any cooling or other problems with a vertical orientation?
    Roger H on Apr 17, 2017
    BEST ANSWER: Hey Roger H,
    Roger J here. Even though the best venting orientation is obviously horizontal, my personal experience is this amp doesn't get very warm at all, even with fairly high volume levels for an extended period of time, so I personally wouldn't worry too much about mounting it vertically on the wall. However, I don't think I'd be comfortable mounting it in a way that would block the vents. I hope that helps.
    Roger J
    Is this rack mountable?
    JIM J on Sep 18, 2017
    BEST ANSWER: If you buy 2 of these - they would be rack mountable. Each amp is half the standard width. 2 units side by side would be standard width and they do include hardware for rack mounting in this configuration.
    Can I use both RCA preamp to an amplifier AND the 2 channel terminal of a single zone to add two extra speakers to a zone? Hence, 2 speakers hooked up to Unity 200-Watt Bridgeable Power Amp, and two speakers hooked up to the unit itself on a single zone?
    Gino C on Aug 17, 2017
    Unity 200-Watt Bridgeable Power Amp
    Unity 200-Watt Bridgeable Power Amp
    6 Zone Home Audio Multizone Controller and Amplifier Kit, NO LOGO
    6 Zone Home Audio Multizone Controller and Amplifier Kit, NO LOGO
    BEST ANSWER: Yes. The user manual shows a diagram on page 10 where a sub-woofer is connected to the pre-amp outputs and speakers are connected to the speaker output of the same zone, so both will work together.

    is it possible to attach a speaker selector after the amp to increase number of speakers?
    A shopper on Jun 19, 2017
    BEST ANSWER: Yes and Monoprice carries them. They keep the impedance within range
    Will this amp drive two 8 ohm speakers, and a powered subwoofer connected to the rca out, simultaneously?
    Matthew C on Sep 18, 2017
    BEST ANSWER: The amp will power the speakers, up to 100 wats each i believe, and the RCA out just passes the signal onto whatever you send it to, like a powered sub or another amp. Just make sure your amp has a crossover so it won't be trying to play the higher frequencies along with the speakers powered by the amp itself.
    I have 4 sets of speakers mounted in ceiling in stereo (total 8 speakers) will this amp be powerful enough?
    Stefan S on Feb 9, 2017
    BEST ANSWER: Peter is correct. "...you can't simply connect four speakers in parallel to each channel because that would present a 2 ohm (or less) load to the amp and possibly cause it to cook itself to death. The amp is rated for a minimum of 4 ohms so, if your speakers are 8 ohms each, you could get two amps and drive two pairs with each one. If your speakers are less than 8 ohms (6 ohms is common), then you'd need an amp for each pair..."
    Check the RMS rating of your speakers. This amp does have a line out so you can run two side by side to drive all of your speakers.
    Can this power 2 passive subwoofers?
    Juan L on Aug 18, 2017
    BEST ANSWER: Thank you your interest in this amplifier. Assuming your subs are 8Ω-You can power one on each channel of the amp. The unity series amps as most home amplifiers are only rated at 8Ω when bridged mono. You can use 2 of the 100W version, 18513, for 120W @ 8Ω to each sub.
    Unity 100-Watt Bridgeable Power Amp
    Unity 100-Watt Bridgeable Power Amp
    Can this amp be used for two 10 inch 8ohm in wall subwoofers?
    Juan L on Aug 16, 2017
    BEST ANSWER: Yes, it is a 2 channel amp and you can use it for 2 subwoofers. But typically with subwoofers, you can bridge the channels (switch at the back of the amp) and wire the 2 subs in parallel so both get the same signals at 8 ohms.
    I have the Stereo Tube Headphone Amp with USB DAC will this work well with the Unity 200-Watt Bridgeable Power Amp?
    A shopper on Apr 14, 2017
    BEST ANSWER: Thanks for your interest in this amplifier. Yes, this amp will give you plenty of clean power for your room speakers. The tube front end will make a really good sounding system. Enjoy.
    What is the frequency response of this amp?
    A shopper on Mar 21, 2017
    BEST ANSWER: Thanks for your interest in this power amp. The Unity series stereo power amps have a frequency response of 20 Hz to 20kHz.
    4.2 / 5.0
    11 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Works great to add two more amplification channels for rear Dolby Atmos speakers to my Yamaha RX-A3060 receiver (which has 11 channels of processing but only 9 channels of amplification).
    February 27, 2017
    7 months ago
    Works great, sounds good
    Replaced a large AB amp with this. Originally was getting the old amp fixed and planning on using this elsewhere. But it is so nice, compact, efficient. Not sure if I were still a 30 year old audiophile I would feel this way. But sounds great to me. There is a max level pot on the back that needs to be set, left in the lowest position, it makes the amp appear to not work. Only real hiccup.
    June 29, 2017
    3 months ago
    Great for NeoX setup
    My receiver needed an external 2ch amp to enable 11.2 NeoX. This works great and it's nice that it automatically turns on and off. Also the narrow size (1/2 rack) allows it to fit perfectly in my TV stand.
    March 25, 2017
    6 months ago
    Plenty of power, rather sterile sound
    Using the amp in stereo, powering an eight speaker whole house setup. (Through a Monster speaker selector) Playing MP3's via iTunes / Airport Express, line out from a Yamaha receiver.
    Sound was noticeably sterile compared to previous Pioneer receiver setup. Did some EQ tweaking but never got the "warmth" and "spacious" sound as it was before. Internet searches found that this can be due to it being a Class D amp.
    As mentioned, amp has plenty of power and was never warm to the touch. Replaced it with a Crown XLI-800 (Class AB) amp and the sound was much better to my ears.
    Good deal for the amp and will keep it to use for a subwoofer or surrounds instead.
    May 3, 2017
    5 months ago
    Nice Product
    Use this for my Atmos system. My Yamaha receiver can process 11 channels of Home Theater goodness, but only has 9 channels of amplification. I use this for the other two channels to bring me up to a 7.2.4 Dolby Atmos/DTS X system. Sounds good and has completed this task without issue. Only wish it had speaker jacks that would take banana plugs, but cant have it ALL at this price.
    August 31, 2017
    1 month ago
    Great once you figure things out.
    I was hoping to just use the RCA in and out jacks, but in order for this to work I had to use the speaker out terminals and then convert the wire end in order to do what I needed. I also learned that even if you want to drive 2 in-wall subwoofers, you should use this in bridge mode and then split that output to both subs. You will get more power out if this unit that way.

    I have been using the trigger to turn it off and on with the receiver, and that works flawlessly.
    September 9, 2017
    2 months ago
    Seems to be a great amp overall but...
    Overall I am pretty impressed with this amp. I bought two and I am operating them in bridge mode. They are very clean and they drive my speakers to concert levels without any discernible distortion. I am not an audio critic but it sounded great.
    The only issue that I have is that there is a constant noise produced by the amp independent of the output. It is only annoying on very quite passages or when there is silence in the track.
    I am keeping it though.
    May 7, 2017
    5 months ago
    Static noice from speakers
    The one I received makes annoying not too loud static noise coming from speakers.
    August 8, 2017
    2 months ago

    In Stock This item should ship today (9/22/2017) if ordered within 7 hours 15 minutes
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