Review on π Enhance Audio Quality with KOOBOOK 2Pcs SSM2167 Microphone Preamplifier Board Preamp COMP Compression Module DC 3V-5V by Ronny Prather
Works great - receiver and amplifier
My headset mic on my desk phone was too quiet. I connected it via a 2.5mm to RJ9 adapter and the sound is much better. IMPORTANT: Don't forget to remove R1 and R2 when soldering your own variable resistors! I covered them while doing this and it took quite a while to desolder.
- Handy item
- So far so good
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