I have for sale this nice passive preamp in a box which includes 48 postion shunt type attenuator and 3 input selector.
Number of steps: 48
Contact material: Hard silver 99,99% Ag
Polished slider and contact pins
Entire signal path silvered
Silver is put direct on copper
Extremely short signal path
Channel matching: +/-0.1 dB
Mechanical life: > 50 000 cycles
Resistance: 100 kOhm
Resistors: INPUT - Caddock MK132; GND - Vishay/Dale RN55 1% 100ppm , 1/10W, low noise, non-inductive, metal film
CNC machined box made from anodized aluminium, exotic wood and inox knobs.
Attenuation range: -60 dB ... -3 dB
Attenuation steps: steps 1 to 11 - 2dB, 12 to 48 - 1dB