128 steps balanced in/out stereo volume control assembled reliable relays !!

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This is a reboot of our popular audiophile quality 128 steps balanced in/out volume control board. 

The board features :

1. high quality PCB with SMD components already soldered on the board ;

2. Dale non-magnetic resistors as the only resistors on the audio path ;

3. Can be retro-fitted with IR remote motorized potentiometer to become a remote stepped volume control board.

The existing values have an input and output impedance of 47K to 600ohm. This allows the volume control board to be interfaced with most of the signal sources.


Input Impedance : Between 47K to 3K ohm 

Output Impedance : Between 47K to 600 ohm 
(Note : This is a R2R type attenuator. Therefore the input and output impedance varies with position)
Board Dimension :  173mm x 60mm


Supply voltage : AC 12V to 15V   or DC +15V to +18V 250mA
Each board come with a 50K potentiometer to control a DC level for specific relay setting. Audio signal does not pass through the 50K potentiometer. It is for control purpose only.