Industry standard vintage Revox A77 reel to reel tape recorder, quality made and designed in Switzerland. The A77 are used by the most discriminating Audiophiles and Recording Studios. They have the incomparable Swiss Revox design, craftsmanship, attention to detail, parts quality, reliability, sound quality and performance. This A77 was working when last used, but has been stored inside a climate controlled environment for over 25 years. It does power up, play, rewind and fast forward functions all operate. This has the fastest rewind and fast forward of any deck I have experienced. When in the play mode, there is a clicking sound inside the unit that corresponds to the speed of the reels. This is all the testing that was done. I had to make a power cord out of an old extension cord to test it. It does not come with the power cord. After market power cords are available online. It is in good original cosmetic condition as well. There are few small nicks, dings, scuffs, one small on the bottom back corner and the plastic front is just barely starting to pull away from the wood front, nothing too serious, just wanted to mention it. It is all original, lots and lots of potential. All the motors are direct drive and the only belt is the tape counter. These are known for their excellent sound quality and performance. It will handle 7" and 10" reels. It will need some restoration/repair/lubrication, etc, as it has been stored and not used for a very long time. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good listening, SonnY :) See the impressive specs below: PS: It is multivoltage switchable.




Tape Transport

Three Studer eddy current motors. Electronically governed capstan motor. Electronic speed change. Solenoid operated via 3 relays.

Tape Speeds:

3.75 and 7.5 ips (9,5 cm and 19 cm/sec.) ± 0.2%
High speed Version: 7.5 and 15 ips (19 cm and 38 cm/sec.) ± 0.2%

Wow and Flutter:

max. ± 0.04% at 15 ips
max. ± 0.08% at 7.5 ips
max. ± 0.1% at 3.75 ips (Weighted at DIN Standard 45507)

Tape Slip:

Less than 0.2%

Reel Diameter

Maximum 10.5" (26,5cm)
(Minimum hub diameter 23/8 inches)

Forward / Rewind

Fast winding time for 1800' (1100m) is 92 seconds

Tape Heads

Three (Separate precision erase, record and playback heads.) Patented 'True Radius' design ensures excellent S/N ratio and head wrap

Guide System:

The Heads, the capstan drive, and the machines tape guides are mounted to a one-piece casting to maintain precise alignment.

Operating position:

horizontal or vertical




Individual stereo record and playback heads with separate preamps, plus separate record and play circuits permit full source-tape monitoring.


NAB Standard on both record and playback at all speeds.

IEC Standard switchable on playback only.

Record Playback
Frequency Response:

(Based on Revox 601)

15 ips - 30 Hz - 20 kHz ± 1.5 dB
7.5 ips - 30 Hz - 20 kHz + 2 / - 3 dB
3.75 ips - 30 Hz - 16 kHz + 2 / - 3 dB

Signal to noise:

15 ips - better than 66 dB
7.5 ips - better than 66 dB
3.75 ips - better than 63 dB

15 ips - better than 62 dB
7.5 ips - better than 62 dB
3.75 ips - better than 59 dB

Add 4 dB to the above figures with Dolby on, referenced to less than 2% THD
(Reference with Scotch 203 or Revox 601 or equivalent. Weighted as per CCITT C-curve to exclude supersonic bias noise.)

Distortion at full modulation
at 1 kHz:

Max. 2% at 15 ips and 7.5 ips.
Max 3% at 3.75 ips.

Crosstalk at 1 kHz:

Stereo, better than 45 dB
Mono, better than 60 dB

Bias frequency:

120 kHz, push-pull oscillator. Designed for low noise, high output tapes

Input sensitivity per channel

Microphone, switchable LOW/HIGH
LOW: 50 - 600 ohms (unbalanced) 15mV
HIGH: up to 100 K ohms 2.5 mV
RADIO: 33 K ohms 2.5 mV
AUX: 1 M ohms 33 mV

Output per channel

OUTPUT: max 2.5 rms @ 600 ohms
RADIO: max 1.2 rms @ 2.5 K ohms
PHONES: 200 - 600 ohms (no electrostatic)

Semiconductor complement:

54 Transistors; 32 diodes, 4 silicon rectifiers, 1 CdS-cell

Remote control:

Fully electric for all operation functions.

Output Amplifiers:

Plug-in optional. 2 x8 watts continuous rms power, 2 x10 watts music power as per IHFM, 4-16 ohms, less than 1% distortion.

Power Supply:

Electronically stabilized.

Mains voltages:

110, 130, 150, 220,240, 250V / 50-60 Hz.

Power consumption:

70 ... 100 watts

(Wooden Cabinet)

161/4" W x 141/8" H x 81/2" D.
(Measurements include knobs but not reels.)


Approximately 34 pounds (» 15 kg)

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Listed7 months ago
ConditionNon Functioning (Used)
Non-functioning items do not work as they should. All known issues should be described in the listing description.learn more
  • Vintage Revox A77 Reel To Reel Recorder, 1/4 Track, Needs Restoration
  • Made in Switzerland, Industry Standard Performance/Sound Quality
  • Wood/Gray
  • 1970s
Made In
  • Switzerland

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Fort Walton Beach, FL, United States
Joined Reverb:2014

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