Pro Intercom PS301 Power SupplyThe PS301 is the ideal combination of analog linear and digital circuitry. The supply section is linear with a toroidal transformer coupled with linear regulators to virtually eliminate stray field radiation. The PS301 will play well with other sensitive audio and lighting gear with which it shares rack space. The performance of the power supply is extensively monitored by a microprocessor which detects heat, voltage and the status of both the input