1/8″ aux Input Mixing 2 in 4 Channel Way Out Headset Box Headphone Amplifier 3.5mm Mixer 1/8 inch Stereo Audio Amp with

(5 customer reviews)



6.7 in*2 in*1.26 in, Weight: 7.8 oz;Contains 4 independent stereo high-power 5x amplifiers (14db), which can maintain the highest sound quality even at maximum volume. Adopt NJM4556A low voltage high current dual op amp, ultra low noise op amp for excellent audio performance: same as op amp in large size audio equipment

Additional information

Weight 340 kg
Dimensions 15.29 × 4.19 cm


Mounting Hardware

‎12v Adapter;amp body

Number Of Items


Power source type


Batteries Included


Batteries Required


Includes Remote


Package Dimensions

‎15.29 x 15.29 x 4.19 cm; 340 Grams



Date First Available

19 September 2022



5 reviews for 1/8″ aux Input Mixing 2 in 4 Channel Way Out Headset Box Headphone Amplifier 3.5mm Mixer 1/8 inch Stereo Audio Amp with

  1. David

    Noise issues for me
    Update: it seems like the issue may have been coming from a ground loop, which wouldn’t be the fault of this mixer. Updating to 4 stars so as not not unfairly impact ratings, as I can’t know if this device contributed and to what degree.I was looking for an audio mixer with 2 inputs and 2 output (all 3.5 mm) and this seemed to be pretty much the only basic option on Amazon. Unfortunately, the level of noise added by the power supply makes it unusable, the speakers are constantly hissing with some pops. Maybe a nice clean power source could make it acceptable, but that doesn’t change the underlying problem with the isolation in the switch.

  2. Juan Ruiz

    Too Noisy
    It could have been my environment, but the noise level was too great to ignore. I returned it because I could not make it work. I have not tried another product to compare the performance.The price seemed okay.

  3. JIMEL

    It has TWO inputs. The output is STEREO x4
    The amplifier is adequate for a sound file like me. I have powered PC speakers and this mixer enables me to use each one seperately (alot of wires tho) with some control. I believe this headphone amp adds only 12db. Whether the TWO INPUTs accept mono is questionable? I am using ONE aux input accepting stereo. There is no panning or balance of left or right, TWO INPUTS and TWO INPUT volume controls (STEREO EA.) for each of 4 channels

  4. Tom

    Noise level is unappealing
    Weird thing is that the audio quality is bad because of the noise, but if you search for the name on the product that is shipped, “AU-204”, you don’t find it on amazon. The promotional photos show “AU-2-4 audio mixed distributor” instead. Search for that, you also don’t find it on Amazon. I was able to get back to this product from oder history to write a review. The noise makes it bad and wish I looked for a digital, non-analog solution, or simply just didn’t bother mixing audio.

  5. TC Tomaselli

    Rip off
    It cuts down the volume & adds significant distortion. It’s going back!

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