CONRAD-JOHNSON 350SA POWER AMP. THIS AMP IS IN EXCELLENT CONDITION, IT HAS HAD MINMUM BUT REGULAR USE TO KEEP IT IN GOOD CONDITION, SHOULD BE AS GOOD AS NEW BUT WOULD ACCEPT RETURN IF NOT SUITED. As can be seen from the photos I have the original packaging and the original instruction manual. the packaging has dedicated foam supports and the cardboard box is sturdy. the packaging weighs in at 75lbs or thereabouts. Posting or courier is at buyers cost. Quality PartsAs with all Premier components, the Premier 350 is constructed from the highest quality, carefully selected parts for unrivaled sonic performance and reliability. The circuits employ polypropylene and polystyrene capacitors extensively, except in the main power supply storage, where special high-speed electrolytics are used because of the extremely high capacitance required. The audio circuit and related power supplies utilize precision low inductance laser-trimmed metal foil resistors. The obsession for parts quality extends to the high quality, gold plated input jacks and output connectors – even the internal wiring is chosen on the basis of its sound quality in its specific application.Thoughtful engineering, specification of the finest available component parts, and painstaking care taken in production make this an audio amplifier without peer in music reproduction.Specifications:• Output Power: 350 watts per channel from 20 Hz to 20 KHz at no more than 1.0 % THD or IMD, both channels driven into 8 ohms.• Frequency response: (at 10 watts): 20 Hz to 20 kHz, +/- .1 dB• Hum and noise: 104 dB below rated power• Sensitivity: 1.1 volt rms to rated power• Input Impedance: 100 KOhmsMechanical:• Dimensions: 19 W | 8 H | 16.375 D inches• Weight: 84 lbs.