8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler 1CH-3V-8PCS

8 Pack 3V 1 Channel Relay Module with Optocoupler Isolation for IoT Projects

8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation...

CLOUD CXA450 (V4) 4 x 50W, 4 CHANNEL AMPLIFIER, SILVER/GREY MODEL.

Crestron AMP-2210T 2-channel 2x 210w Commercial Power Amplifier Rackmount

Citronic QP2320 Quad Power Amplifier 4 Channel PA DJ Rack Amp 4x580W