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    Monoprice Sound Block Passive Direct Box with Ground Lift and Attenuator
    Product # 600125
    In Stock This item should ship today (9/21/2018) if ordered within 5 hours 14 minutes

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    Qty: 1 $12.99
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    Browse 9 questions Browse 9 questions and 20 answers
    Question on the ground lift function. The push button is marked Ground On/Off. Does this mean when pressed in the ground is connected and when in the out position the ground is lifted? Or vice versa?
    Ronald C on Dec 12, 2017
    BEST ANSWER: That is correct - Switch IN = ground connected from XLR Pin 1 to sleeve of 1/4 phone input. Switch OUT breaks that ground (shield) connection.
    The XLR side of the box is not pictured. Does this box have a male or female XLR?
    David H on May 24, 2017
    BEST ANSWER: As a direct box - its typical function is to take a 1/4 unbalanced source and provide a balanced output so the output is XLR male. As a side note - I also use them to take a line level balanced XLR signal and output it as a mic or level to a video camera with a 1/8" stereo input. Just add a Stereo mini to dual mono 1/4" cable. Good luck!
    Can I use this between a Mic and guitar amp to lower the buzz/ground noise, and if so, should the Mic connection be made from the xlr side or the balanced input?
    Samuel A on Dec 4, 2017
    BEST ANSWER: I use these DI Boxes on a regular basis to feed a XLR balanced Line through to in balanced input. This direct box would be a good choice as it has a three position attenuators that can be set to "0 dB" for your application so your signal loss would be minimum. It has an internal transformer and a ground lift switch for ground isolation. You will need a female to female XLR gender mender to connect your microphone. Electrically, it should work fine. The only concern I have is the amount of gain your amp has but since your concern was hum, I assume the gain is fine. Good luck.
    I have a Wurlitzer jukebox in a game room that has remote speaker output (L & R) connections. I would like to connect the jukebox to my Onkyo TX-SR608 AV receiver which is in my living room. Since the output from the Jukebox is speaker level could I use two of these (one for L channel and one for right channel) to convert the speaker level signal to a "pre-out" signal that I can connect through one of the RCA (red/white) input options on the Receiver.
    The goal being to hear the jukebox in the living room over the home theater speakers.
    If so for the best quality sound would it be best to mount these near to the Jukebox or the receiver? in other words should I minimize the run of speaker level wire or should I keep the "pre-out" level wiring length to a minimum?
    Is not what will I need?
    Is there a "wireless" option that will achieve the same result?
    andrew k on May 9, 2017
    BEST ANSWER: I would put the Sound Block closer to the Onkyo. Since your receiver is unbalanced, best to run the poweramp out to the DI then use XLR to RCA cables to the receiver.
    Monoprice 1.5ft Premier Series XLR Female to RCA Male Cable, 16AWG (Gold Plated)
    Monoprice 1.5ft Premier Series XLR Female to RCA Male Cable, 16AWG (Gold Plated)
    Could you use this as an attenuator between a guitar amp and the speakers themselves using unshielded 1/4 jack speaker cables to connect both? If so, do you know what ohms the amp output as well as the speaker cab need be? Can you go from a 4 ohms to an 8ohms?

    New User U on Mar 14, 2017
    BEST ANSWER: Thanks for your interest in this DI box. The Sound Block not designed to work as an attenuator for speaker cabinets. It will allow for speaker level out to the XLR. The 1/4" connectors are wired in parallel and do not run though any of the filters.
    So If I wanted to plug my guitar into a live sound system, I press the ground switch, plug in to the box, and press the ground switch again?
    A shopper on Feb 22, 2017
    BEST ANSWER: No. The ground switch is used to clear up ground noise. Typically you plug your guitar into the direct box and the PA and if there is noise try the other setting of the ground switch to see which setting results in less noise ( buzz)
    I have a controller that has +4 dBu RCA outs. Can I use two of these boxes to balance my signal? Will the resultant balanced signal be significantly attenuated?
    Radu S on Jan 18, 2017
    BEST ANSWER: If the Attenuate switch is set to "0" it will not affect signal strength.
    Good day - can this impedance match two 2v rms/1k ohm unbalanced outputs, to two 20k ohm balanced inputs that take 10v rms before clipping? & what is it's frequency range? Thanks...
    A shopper on May 1, 2018
    BEST ANSWER: This is a single channel unit.
    I want to use two of these to connect a L and R output on a keyboard to a snake out to a mixer to have a stereo channel. Would this work?
    John N on Nov 27, 2017
    BEST ANSWER: Yes, two of the Sound Blocks used one for left and one for right will work beautifully for your stereo ketboard. Since the 1/4" inputs are wired parallel you can use with your left/right output of your keyboard and sum mono to one XLR to your system.
    4.9 / 5.0
    18 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    good product
    This is a very well built direct box for the money. A comparable product would cost around $50.00
    February 24, 2017
    1 year ago
    Bought 6
    I bought 6 of these DI boxes as soon as they came out. The price is fantastic, I took the first one apart to see if it was well constructed and the build quality seems very good, better than some that I have paid much more for.

    I've used them for several gigs now on many types of instruments and they work great! I had a mandolin pickup that required an active DI at one event, but these worked great for all of the other stringed inst pickups and keyboards.

    Had one stage that had noise problems and the ground lift switches cured the buzz.

    All in All a Great Buy!

    PROS: Price is great!


    clean sound

    CONS: sponge rubber feet
    September 11, 2017
    best DI Box deal anywhere.
    I ordered 4 of these, using in my home studio to di keys and electronic drums, had to use the ground lift on drums, after that they are silent, good clean sound of instruments in to daw, these were a great deal, sturdy built.
    I completely trust Monoprice with anythingI need.
    December 18, 2017
    9 months ago
    Awesome buy! It works as designed.
    I bought a pair of these for a keyboard to mixer interconnection (into a 100 ft snake. They work great.
    May 15, 2017
    1 year ago
    Gread DI box at a great price!
    This does exactly what you want a DI box to do. You can adjust the DB level and cut the ground noise and you don't break the bank to do it.
    January 31, 2017
    1 year ago
    Nice piece of equipment
    I purchased 3 of these boxes for use with band equipment. It functioned as promised with no issues.
    February 6, 2017
    1 year ago
    A Great Value
    I have tried this with a keyboard and an acoustic guitar so far. No signal loss or noise, just a solid balanced output. You can not beat these for the value!! They are solid, compact and do their job well.
    September 26, 2016
    Does what a direct box should do. Easily comparable to units twice its price. Well built, definitely worth the money.
    August 19, 2017
    1 year ago
    Great Basic DI
    This DI is well built, sounds as good as any basic DI and hard to beat the cost.
    August 31, 2017
    1 year ago
    Great DI box for the money.
    Works great, attenuate good for high output guitars.
    May 6, 2018
    5 months ago