JV13 Relay Version Remote Volume Control Preamplifier Board Signal Switching

Hiend 128 Steps Remote Volume Control Board Relay Pure Resistor Shunt

Hifi 128 Steps Relay Remote Passive Volume Control Board KIT 2 Channel

Hifi Remote XLR Balance Preamplifier Board CS3310 Volume Controller

Assembeld Hi End 64 Steps Relay Remote Volume Control Board (Balance Version)

XLR/RCA HiFi Preamplifier Fully Balanced Passive Preamplifier/Volume Controller

Volume Control Relay Attenuator only 2 control boards

Balanced Version 128 Steps Relays Preamp Board Remote Volume Controller