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Marantz SD9000 "Compudeck" — Professionally Restored | Original Packaging | Perfect Working Order

You are looking at one of the most technically advanced cassette decks ever produced for the consumer market — the legendary Marantz SD9000 Compudeck, professionally restored to perfect working order by Columbus Radio in Winnipeg, Manitoba, a trusted vintage audio restoration specialist. This unit comes complete with its original factory packaging — an extremely rare find that significantly adds to its collectibility and value.

The SD9000 was Marantz's top-of-the-line flagship cassette deck, introduced in 1980 at a retail price of $830 USD. It earned the "Compudeck" name for its microprocessor-controlled programme selection system — a feature that was years ahead of its time. It combined a two-speed, three-head recording system with microprocessor-controlled programme selection, electronic timing functions, and a dual-motor transport.

What makes this unit exceptional:

Professionally restored by Columbus Radio, Winnipeg — all mechanical and electronic components serviced and verified
Perfect working order — records, plays, and all functions operate as designed
Original factory packaging — extremely rare to find; protects the unit and substantially increases collector value
Three-head design — separate record and playback heads allow true source-to-tape monitoring while recording
Dual-speed operation — records and plays at both 4.75 cm/s (standard) and 9.5 cm/s (reel-to-reel speed), delivering dramatically improved frequency response at the higher speed
No priors on parts — this is not a patched unit; it has been properly restored

FULL SPECIFICATIONS:

Type: 3-head, single compact cassette deck
Track System: 4-track, 2-channel stereo
Tape Speed: 4.75 cm/s and 9.5 cm/s (dual speed)
Heads: 1 × record, 1 × playback, 1 × erase
Motors: 2 × DC servo
Tape Compatibility: Type I (Normal), FeCr (Ferrichrome), CrO2 (Chrome), Metal
Frequency Response: 25 Hz – 18,500 Hz (Metal tape at 4.75 cm/s)
Wow & Flutter: 0.05% (WRMS)
Total Harmonic Distortion: 2.5%
Signal-to-Noise Ratio: 63 dB (Dolby off); improved with Dolby B or DBX engaged
Noise Reduction: Dolby B; DBX (on DBX-equipped variant)
Output: 0.65V line
Input: Line and microphone
Transport Control: Solenoid-operated feather-touch full-logic controls
Programme System: Microprocessor-controlled track selection — programmes up to multiple tracks in custom sequence
Timer: Electronic digital timer with rear accessory outlet (timer-controlled recording/playback)
Additional Features: Bias fine adjustment, auto tape slack removal circuit, mic/line mixing, electronic timer memory, source-to-tape monitoring
Dimensions: 416 × 146 × 243 mm
Weight: 9.1 kg
Country of Origin: Japan
Year Introduced: 1980
Original Retail Price: $830 USD (1980)

CONDITION:

Professionally restored and in perfect working order. All transport functions, heads, motors, and electronics have been serviced by Columbus Radio, Winnipeg. Unit records and plays flawlessly at both speeds across all four supported tape formulations. Original factory packaging included and intact.

WHAT'S INCLUDED:

Marantz SD9000 Compudeck cassette deck
Original factory packaging (box)

SHIPPING:

This unit will be carefully double-boxed for shipping. Due to the weight (9.1 kg) and value, shipping cost will be calculated based on buyer's location. Local pickup available in Winnipeg, Manitoba. Canada-wide and international shipping available — please message for a quote before purchasing if outside Canada.