PASS 1.7 Hifi Full Balance Input Output Preamp Unbalance Assembled Board

PASS 1.7 Hifi Full Balance Input Output Preamp Unbalance Assembled Board
 

Product Description:
- The board ref PASS 1.7 circuit ,2 channel designed on one PCB,But the two channel power supply and GND completly independent which gurantee the Separation degree.
- It adopt high grade thick gold-plated PCB (Base 2mm ,Copper foil thickness 75U,beyong the 50U PCB)
Adopting all the new IRF FET transistor (IRF610/9610) Military 718  resistance,New nichicon electrolysis,new VISHAY Axial coupling capacitance,JAPAN TAKAMISAWA Silver contact relay,
- The voice is very sweet and  Extremely please the ear beyond most tube preamp
- It integrated rectifier filter regulator circuit
 
To solving the conventional problem -the volume controlled by Potentiometer's Low reliability,Contact sliding noise,lower volume with less dynamic ,Frequency response lower,we using the relay switch way to control the volume,which much more convinent to adjust the volume,and Shorten the signal flow,which improve the sound quality .
 
Pass 1.7 is a Full balance input/output preamp.
it also can be used as > Unbalance input ,balance output
                                        Balance input ,unbalance output
 
You can choose the matching function according to your device
 
Size:300mm*200mm (11.8"*7.9")
Voltage:0V-55V,0V-55V
Volume control board voltage:15V-0V-15V
 
Package include:
- 1 x PASS 1.7 Hifi full balance preamp unbalance assembled board