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Product Information

  AM-77
  Abbingdon Music Research > Dual-Mono Amplifier


A truly sans pareil design, the exceptional 180W per channel AM-77 dual-mono amplifier offers pure, stable power with the ability to drive even the most difficult of loudspeakers with speed, precision and rhythm.

This is founded upon a combination of zero negative feedback, pure Class A valve stages in the pre-amplification section. In the power amplification section are bipolar output devices with AMR¡¯s error correction circuit, which removes all the drawbacks of conventional solid-state amplifier circuits.

The sonic performance of the AM-77 is also matched by its exceptional adaptability no less - several AM-77s may be linked in integrated, bridge, or mono configurations so that the superlative sonic drive of the AM-77 can be increased to meet virtually any application, however demanding.

With these and other outstanding and unique designs, the AM-77 is able to attain that rarely achieved goal of high-end audio components, the ability to convey emotion and tangible feeling of music as the artist intended it to be heard.

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Technical Notes

User Manual (PDF)

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SPECIFICATIONS
Inputs 5 x RCA
1 x XLR Bal. shared with 1 RCA
1 X iPod® shared with 1 RCA
Volume Control -71dB ¨C 0dB in 1dB steps + Mute
Input Sensitivity
(IHF 2.83V Out)/Impedance
< 0.05V / >20KOhm
Power Output
(IHF Dynamic Power)
270 watts per channel at 8 ohm
Power Output (FTC) 180 watts per channel at 8 ohm
Output impedance 0.5 ohm, 20-20,000 Hz
Frequency Response (-1dB) 10Hz - 50kHz
Signal-to-noise ratio 'A' weighted >100 dB
Operational Modes Integrated amplifier mode
Power amplifier mode
Monoblock option
An unlimited number of AM-77s can synchronised
Thermionic Electron Valves 5687/6900 (NOS): amplification stage
Power consumption Standby: 50 W
Power on: 95 W
at rated output (4R): 1000 W
Power Transformer 1200 VA Custom Double C Core
Power Supply Capacitance 48,000uF per channel
Rated voltage 90V-135V & 190V-260V AC
Colour Champagne or Titanium
Dimensions 17.9in W by 6.2in H by 18.3in D
46cm W by 16cm H by 47cm D
Weight Amplifier: 75 lbs/ 34 kg
Shipped: 121 lbs/ 55 kg
Information and specifications subject to change without notice.
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