Title: Noisy, loss of tone, phase inverts.
Review: This mixer is unusable in any situation where high performance is critical. I wanted to use this mixer as a submix for my keyboards, before sending them off to the PA system. After spending some time playing through the mixer, I found that the signal had picked up noise and also sounded dull and flat.I checked out the mixer's performance on my spectrum analyzer. The frequency response was not flat. It had a very strong high frequency attenuation, explaining why my keyboards sounded so dull. The unit still picked up noise with a regulated power supply. I also found that the mixer inverts your signal. Generally this isn't much of a concern, but if you ever have a situation where you need to listen to both your source signal and the mixer output at the same time, you will get signal cancellation.I suppose the performance of this unit is due to the low cost. I would have gladly paid more for a better quality unit.
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