Sansui SIX Original Balance,Bass,Treble Knob. Tested Parting Out SIX Receiver

Sansui 9090 Original Bass, Treble or Midrange Control. Tested. Parting Out 9090

Sansui 4000 Original Bass or Treble Control. Tested. Parting Out 4000 Receiver.

Sansui G3500/ Original Bass/Treble Control. Tested Parting Out Sansui G3500.

Onkyo TX-2500 MKii Original Bass/Treble Control. Tested Parting Out TX-2500 MKii

Sansui 7070 Receiver Original Bass/Midrange/Treble Control Tested Parting 7070

Nikko NR-320 Original Bass/Treble Control 100K Ohm. Tested. Parting Out NR-320