Revox A 78 specifications

Category : Integrated amplifier

Brand : Revox

General

connectors

Technical data

equipment

• manufacturer: Revox
• models: A 78 MK I, A 78 MK II
• type: amplifier
• year of construction:
  • A 78 MK I: 1971-1974
  • A 78 MK II: 1974-1978
• Made in: Switzerland
• color: silver, gray
• remote control
• power consumption: 520 W
• dimensions: 415 mm × 160 mm × 245 mm (B × H × T)
• weight: 8.2 kg
• factory price approx.: 1198 DM

• A 78 MK I: 1971-1974
• A 78 MK II: 1974-1978

• number of inputs:
  • Phono MM: 3,0 mV, 47 k643961b8da111c0a15d770a1109a86d4
  • Phono crystal: 230 mV, 800 k643961b8da111c0a15d770a1109a86d4
  • microphone: 3,0 mV, 100 k643961b8da111c0a15d770a1109a86d4
  • Tuner: 100 mV, 100 k643961b8da111c0a15d770a1109a86d4
  • Aux: 100 mV, 330 k643961b8da111c0a15d770a1109a86d4
  • Tape Play 1, 2: 100 mV, 100 k643961b8da111c0a15d770a1109a86d4
  • Tape Play to DIN 1, 2: 100 mV, 100 k643961b8da111c0a15d770a1109a86d4
  • Tape Monitor: 250 mV, 50 k643961b8da111c0a15d770a1109a86d4
• number of outputs:
  • Tape Rec 1, 2: 175 mV, 50 k643961b8da111c0a15d770a1109a86d4s
  • Tape Rec DIN: 30 mV, 80 k643961b8da111c0a15d770a1109a86d4
  • 2 headphones (6.3 mm Jack): 5-16 643961b8da111c0a15d770a1109a86d4s
  • 2 pairs of Speakers

• Phono MM: 3,0 mV, 47 k643961b8da111c0a15d770a1109a86d4
• Phono crystal: 230 mV, 800 k643961b8da111c0a15d770a1109a86d4
• microphone: 3,0 mV, 100 k643961b8da111c0a15d770a1109a86d4
• Tuner: 100 mV, 100 k643961b8da111c0a15d770a1109a86d4
• Aux: 100 mV, 330 k643961b8da111c0a15d770a1109a86d4
• Tape Play 1, 2: 100 mV, 100 k643961b8da111c0a15d770a1109a86d4
• Tape Play to DIN 1, 2: 100 mV, 100 k643961b8da111c0a15d770a1109a86d4
• Tape Monitor: 250 mV, 50 k643961b8da111c0a15d770a1109a86d4s

• Tape Rec 1, 2: 175 mV, 50 k643961b8da111c0a15d770a1109a86d4s
• Tape Rec DIN: 30 mV, 80 k643961b8da111c0a15d770a1109a86d4
• 2 headphones (6.3 mm Jack): 5-16 643961b8da111c0a15d770a1109a86d4s
• 2 pairs of Speakers

• the duration of the performance (total harmonic distortion)
  • 8 643961b8da111c0a15d770a1109a86d4s: 80 watts (2 × 40 watts) <0,1 % (10.00 Hz) <0,3 % in the range of 40-15.000 Hz
  • 4 643961b8da111c0a15d770a1109a86d4s: 100 watts (2 × 50 Watt)
• dynamic performance
  • 8 643961b8da111c0a15d770a1109a86d4s: 140 watts (2 x 70 watts)
  • 4 643961b8da111c0a15d770a1109a86d4s: 160 watts (2 x 80 watts)
• Intermodulation: <0,3 %, 250 Hz/8 kHz, 60 Hz/7000 Hz (4:1)
• damping factor: >20, according to 26 dE1 at 8 643961b8da111c0a15d770a1109a86d4s
• frequency response: 20-20.000 Hz, ±1 dB
• Phono equalization: according to RIAA/IEC standard 50-15.000 Hz, ±l dB
• performance range: 10-40.000 Hz according to DIN 46500
• Crosstalk: >60 dB (1000 Hz) for all RCA inputs
• control: in 4-dB steps
  • Bass: ±12 dB at 60 Hz
  • treble: ±12 dB at 12,000 Hz
  • presence filter: +3,6 dB in a 2500 Hz
  • bass filter sound: 12 dB per octave, -8 dB at 60 Hz
  • height-filter: 12 dB per octave, -15 dB at 12,000 Hz

• 8 643961b8da111c0a15d770a1109a86d4s: 80 watts (2 × 40 watts) <0,1 % (10.00 Hz) <0,3 % in the range of 40-15.000 Hz
• 4 643961b8da111c0a15d770a1109a86d4s: 100 watts (2 × 50 Watt)

• 8 643961b8da111c0a15d770a1109a86d4s: 140 watts (2 x 70 watts)
• 4 643961b8da111c0a15d770a1109a86d4s: 160 watts (2 x 80 watts)

• Bass: ±12 dB at 60 Hz
• height: ±12 dB at 12,000 Hz
• presence filter: +3,6 dB in a 2500 Hz
• bass filter: 12 dB per octave, -8 dB at 60 Hz
• height-filter: 12 dB per octave, -15 dB at 12,000 Hz

• 2 headphones connections

• Other models from the same series:
• Revox A 76
• Revox A-77
• Revox A 78

• followers:
• Revox A 78 MK II

• image: Revox A 78

• extract from the prospectus: Revox A 76, A 77, A-78

• image: Revox A 78 MK II

Comment:

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