Pioneer SR-202 W Reverberation Amplifier In Mint Condition Amazing Shape Works Great Tested this is an amazing looking amplifier. Also comes with the original Owner’s Manual. Two time delay circuits eliminate any peaks or dips in reverberation so what you hear is absolutely stable and has tremendous depth and brilliance. The SR-202 reverberation amplifier can be used to increase the naturalness of your own recorded voice, radio broadcasts, records or tapes. It can be coupled with your own system's amplifier (with tape monitor jacks) in various ways, to provide reverberation effects to the speakers only, or to just the recorded sounds, or both together. You can even control two tape recorders at the same time by switch operation for simultaneous recording, recording with reverberation, playback etc. In fact you can connect the SR-202 in practically any way you like for the effects you want. The system can be converted back to normal operation any time with the flip of just one switch.