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Build help and troubleshooting => MP573 Microphone preamplifier => Topic started by: sdiazmun on April 20, 2026, 08:07:07 PM

Title: Second hand MP573 with -6dB level drop
Post by: sdiazmun on April 20, 2026, 08:07:07 PM
Hi!!

Im just received a second hand MP573 (I have other three), and after compare them with "Smaart", the last one has a -6dB drop across the entire frequency spectrum, and that difference remains even when modifying the gain or the output potentiometer.

Where should I start looking for the point of failure?

Thanks in advance
Regards 
Sergio