Check the listing for details. Control4 C4-16ZAMS Audio Matrix - NEW PSU KIT - 8 Zone Buzzing No Power C4 HC300. Condition: New. Listed at 70.16 USD. Control4 C4-16ZAMS Audio Matrix NEW PSU for 8 Zone. Buzzing? No Power? Noise? Also fits HC300 Do you have a faulty Control4 audio matrix? Out of warranty? We are delighted to offer this new high quality mean well PSU replacement Kit, 25W/5V. With custom built adaptor plate and connectors. It's a direct fit from the old unit. Just unplug and plug back in. 4 Screws to remove on PSU. Universal 85-264Vac input. So will run fine on 110V or 240V USA/UKLow no load power consumption ofControl4 C4-16ZAMS Audio Matrix NEW PSU for 8 Zone. Buzzing? No Power? Noise? Also fits HC300 Do you have a faulty Control4 audio matrix? Out of warranty? We are delighted to offer this new high quality mean well PSU replacement Kit, 25W/5V. With custom built adaptor plate and connectors. It's a direct fit from the old unit. Just unplug and plug back in. 4 Screws to remove on PSU. Universal 85-264Vac input. So will run fine on 110V or 240V USA/UKLow no load power consumption of <0.3W Alternatively send your matrix to me for repair and I will fit this for you. turn around as fast as possible with tracked mail. Please feel free to ask any questions.