Volume Control Relay Attenuator IR Control 2 channels XLR 10K, 22K, 50K, 100K

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ECO Passive preamp. High Quality Connectors. Made in the UK

Hiend Volume Control 64-step Relay Attenuator IR 2 ch 10K, 22K, 50K, 100K

Passive Preamp with remote control for hi-end audio (black colour) #A

Adcom GFP715 Pre-Amp W/GFP-710RC Remote & Power Cord

Volume Control Relay Attenuator IR 2 RCA 10K, 22K, 50K A LED matrix 4 inputs

Passive PRECISION preamp XLR. Relay attenuator.