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Studer C37

Studer

Switzerland

Studer C37

Tape Deck Details

Number of Motors

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Number of Heads

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Head Configuration

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Wow & Flutter

​

Signal-to-Noise [dB]

​

Dimensions [mm]

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Weight [kg]

​

Year built

​

Head Composition

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Equalization

​

Frequency Response

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Speed

7½, 15

Max Reel [inch]

​

Tracks

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1/2 Rec/PB

Price

User

Pro

Additional Information

The Studer C37 is a legendary 2-track stereo master reel-to-reel tape recorder produced from 1961 to 1970 and renowned for its build quality and sonic performance. It marked Studer’s transition to modular, high-precision tube-based recorders and became a mainstay in world-class studios.

Key Technical Features

  • Type: Professional studio tape recorder (2-track stereo).

  • Tape Format: 1/4 inch (6.35mm) stereo, full-track, or custom head assemblies (modular design).

  • Electronics: All-tube (valve), modular dual-mono recording and playback amplifiers for independent stereo channels; plug-in preamp boards for easy maintenance.

  • Tape Speeds: 15ips and 7.5ips (38.1cm/s and 19.05cm/s) selectable.

  • Equalization: Switchable CCIR/IEC and NAB standards.

  • Wow and Flutter: ≤0.1% peak to peak at 15ips.

  • Frequency Response:
    30Hz–15kHz (+1/−2dB) at 15ips
    40Hz–15kHz (+1/−2dB) at 7.5ips

  • Signal-to-Noise Ratio: 62dB (overall) at 15ips; 60dB at 7.5ips.

  • Distortion: ≤2% at 1kHz at 200mMx tape flux.

  • Erase Efficiency: Better than 75dB.

  • Reel Size: Up to 12-inch (30.5cm) reels (AEG-DIN, Cine, and Trident compatible).

  • Transport and Mechanics:
    Heavy cast aluminum chassis
    High-torque motors for fast wind and gentle tape handling
    Mechanic timer with minute/second display

  • Connectivity: Balanced XLR inputs and outputs; input/output level adjustable from 0.7V to 7V; output impedance less than 20Ω.

  • Power Consumption: ~250W (play/record/rewind); 220–240V AC, 50Hz.

  • Physical Dimensions: 655×330×525mm (W×H×D); ~77kg with amplifiers.

  • Special Features:
    Electrically operated tape scissors for precision tape editing
    Modular, pull-out amplifier and preamp design for servicing
    Precision mechanics, robust build for stability in studio environments
    Reel adapters for various international standards

Historical Importance

  • The C37 played a major role in many milestone recordings of the 1960s and was replaced by the A80 in 1970. Its “big brother,” the J37 (1-inch/4-track), was used by The Beatles at Abbey Road Studios.

The C37 remains a revered tool among vintage audio professionals due to its unique tube sound, precise mechanics, and historic reputation as one of the great tape recorders of the analog era

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