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AKG PSU4000 Central Power Supply for 4500/470/450
Central Power Supply for Powering up to 12 SR4000 or SR450 Receivers
Central power supply for powering up to 12 SR4000 or SR450 receivers plus antennas via three PS4000W antenna splitters, or three CU4000 chargers. Also powers the HPA4000 headphone amplifier and HUB 4000 Q network concentrator.