Revox B77 MK II
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Revox B77 MK II

Revox B77 MkII — fully restored to factory-new operating condition.

Story & Notes
A reference-class Swiss deck brought back to its original promise: precision mechanics, predictable handling, and sound that stays honest over time.
Fully rebuilt electronics + renewed mechanics (wear parts replaced with NOS)
NOS record/playback heads
Calibrated and verified to factory specification
Variant with 9/19 tape speeds tracks-4
Work Performed
Electrical
Complete electrical restoration (aging components addressed end-to-end)
Power supply refreshed and verified under load
Audio boards serviced, critical parts replaced where technically justified
Full calibration: record/playback alignment, bias/eq setup per tape type, level matching, channel balance
Mechanical / Transport
Transport fully rebuilt
All wear parts replaced with NOS (New Old Stock) where applicable
Brakes, tape path service, tension and torque set-up
Controls, switches, and connectors cleaned/serviced as required
Heads
NOS record and playback heads installed
Tape path geometry and azimuth alignment completed
Bench Test Summary
Tape speeds standard 9.5/19 cm/s Tracks: 4
Frequency response (overall):
30 Hz – 20 kHz (+2/−3 dB) at 19 cm/s
30 Hz – 16 kHz (+2/−3 dB) at 9.5 cm/s
Wow & flutter (typical): ~0.08% at 19 cm/s; ~0.10% at 9.5 cm/s

Revox B77 MkII — fully restored to factory-new operating condition. Electrical systems rebuilt end-to-end; transport renewed with NOS wear parts. Record and playback heads are NOS. Final alignment and calibration completed to the manufacturer’s specification.

A B77 that behaves like it should: stable speed, correct tape handling, clean recording/playback, and consistent performance across channels.

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