Revox (Willi Studer) · Revox tape decks

PR99

The studio-oriented B77 - the deck that kept Revox in broadcast and small studio racks into the 1990s.

Catalogue code: PR99
Years: year unknown
Type: reel-to-reel tape deck
Valves & speakers: Professional/studio version of the B77 with balanced outputs; Mk I-III revisions
Lifecycle: retired
Confidence: Medium

Specifications

Speeds_ips: 3 3/4, 7 1/2, 15
Channels: 2
Heads: 2 or 3
Technology: solid-state
Inputs_outputs: balanced XLR (studio wiring), line

Safety

Tape deck: head wear (check the head face for a flat), capstan shaft and pinch roller condition, belt/idler kit and motor bearings decide the price; A77/B77 motor boards carry mains-derived voltages - never service with the case open and powered.

01 / Witnesses

What applies here

Marks that can be entered for this maker: Serial number, Model / catalogue number, British capacitor code (Hunts, Mullard), Japanese capacitor code (Nichicon, Chemi-Con, ELNA), EIA component code, Chassis / platter stamp, Version & era marker.

02 / Bounds

The model year is a floor

The introduction year is not documented, so the model narrows nothing.

03 / Value

What moves the price

Sold-price aggregates are not collected yet, so the archive gives no figure — condition, originality of the transformers and a documented recap move this model more than any list price.