Inverse RIAA , Reverse RIAA iR 100 S.
 
It is Only the board, which has been assembled and tested.
This Stereo Passive reverse RIAA pcb, allows you to attenuate a standard line level source (150-300mv) and to equalize that signal according to the RIAA standard.
With This Small PCB You Can: · Playing line level audio (CD, music player, iPhone, computer, etc.) through the Phono input on your amplifier, mixer or receiver.
·Testing your Phono preamp using a line level source.
No power supply needed.
Suitable for both MM and MC inputs.