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Old 21st January 2015, 05:16 PM   #1
jjj333 is offline jjj333  Chile
diyAudio Member
Join Date: Dec 2007
Default MP7720 excessive noise problem

I got that Chinese BIYANG RV-10 3 MODE TRI REVERB, which works great with my Yamaha Tyros 3 Kbd.
Since I am a professional whistler musician, I try to build myself a Mini Demo PA, using this Reverb and a MP7720 D-class audio Amp and run it on 3 Li-Ion.

Problem: It works, but don't know what injects so much noise? Of course I use shielded cable between the Rev-Out and Amp-In. Could it be, the Rev, which I removed from it casing... that causes this ambient noise?
Or maybe the Amp produces this white/ hiss noise?
Is the TA2024 Amp better?
Thanking you in advance... for your good advice, Joh

Last edited by jjj333; 21st January 2015 at 09:09 PM.
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