⭕ Very Nice one owner Nagra MPA 250. 250w x2 or 500w x1!! Unit has original double box, manuals and power cord and is in excellent condition. Everything in perfect working order. The Nagra MPA is a 250-Watt/channel Stereo MOSFET Power Amplifier. A special PFC power supply significantly improves sonic performance by eliminating the detrimental power spikes inherent in traditional transformer-based designs. It can be bridged to deliver up to 500 Watt/channel in mono operation. The unit can be used in vertical or horizontal position. Collection or delivery, in case of unhappy, simply return within 30 days for a full refund.