E1DA Cosmos Scaler High-Performance Low-noise Low-distortions Variable Gain Pre-AMP

 
Specifications:

Device purpose: Ultra-low THD+N variable gain buffer for Cosmos ADC
 

Materials: Sandblasted/black anodized aluminum/laser mark/OPA1612+OPA1656 composite,Viking resistors,Murata, Samsung C0G caps, Taiwanese connectors/relays

Dimensions: PCBA 90x50x29mm104x61x39mm
 
Weight: PCBA 40g / 160g
  Power: USB-C +5V rail, <500mA current
 
Input:
2 channels balanced 200/100kOhm bal/unbal
3.5mm jack up to 20/10Vrms bal/unbalIf only the left input is plugged, the signal is routed to the right channel as well, to implement MONO mode for Cosmos ADC. Cosmos APU’s short cables are suitable for Scaler as well. 
Output: 
2 channels balanced 20/10hm bal/unbal3.5mm jack up to 20/10Vrms bal/unbalCosmos APU’s short cables are suitable for Scaler as well.  
Variable gain table:   in db 0, 7, 10.7, 13.38, 15.788, 17.38, 18.673, 19.844, 21.08, 21.98, 22.764, 23.513, 24.336, 24.965, 25.527, 26.07816 positions controllable by the knob, in the