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View Full Version : New circuit Firebottle Plus phono amp.



Firebottle
23-08-2015, 10:31
As posted previously the first build with the improved circuit is complete and sounding very fine indeed.

The resolution is improved compared with the previous build standard. Internal layout is thus:

http://i601.photobucket.com/albums/tt97/Paramotorpilot/Firebottle%20phono/MM%20Plus%20phono.jpg

Brief specification for MM version:

Passive RIAA, zero feedback.

Gain at 1kHz 40dB - Input 47k ohm, 80pF - Output impedance 200 ohms.

Supply from wall wart psu 12V at 1.2A

:)