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Inputs 4 x RCA 1 x XLR Bal. shared with 1 RCA 1 x USB Volume Control -71dB – 0dB in 1dB steps + Mute Input Sensitivity (IHF 2.83V Out)/Impedance < 0.05V / > 20KOhm Analogue Outputs 1 x RCA; 1 x XLR per channel Power Output IHF Dynamic Power 60 watts per channel at 4 or 8 ohm (stereo mode) 70 watts per channel at 8 ohm (monoblock mode) 120 watts per channel at 2 or 4 ohm (monoblock mode) FTC 60 watts per channel at 4 or 8 ohm (stereo mode) 70 watts at 8 ohm (monoblock mode) 120 watts per channel at 2 or 4 ohm (monoblock mode) Output impedance 0.33 ohm, 20 – 20,000 Hz Frequency Response (-1dB) 10Hz – 30kHz Signal-to-noise ratio “A” weighted >100 dB Total Harmonic Dist. + Noise (THD+N) < 0.3% Operational Modes Pre-Main amplifier mode; Power amplifier mode Monoblock option; Thermionic Electron Valves amplification stage 6H1n-EV fitted ECC88, E88CC, 7308, Cca, 6DJ8, 6922, 6H23n-EV optional Power Transformer 380 VA Custom Torroid (Output Stage) 32 VA Custom EI Transformer (Valve Stage) Power consumption Standby <1 W Power on 25 W at rated output (4R) 250 W Power Supply Capacitance 44,000uF in total Rated voltage 100V/120V/230V~ AC 50Hz – 60Hz Mains Fuse 100V/120V 4A slow blow; 230V 2A slow blow Colour Silver or Black Dimensions 17.7 in W by 4.7 in H by 14.6 in D 45 cm W by 12 cm H by 37 cm D 57 cm W by 49 cm H by 25 cm D (shipped) Weight AM-777 31 lbs / 14 kg Shipped 40 lbs / 18 kg