Studer A812

The Studer A812 is a professional open-reel tape recorder manufactured between 1985 and 1996, recognized as a master recorder with high performance, system flexibility, and advanced microprocessor control. It is widely used in recording studios worldwide for both analog and digital recording applications.

Technical Overview of the Studer A812:

Tape Format & Tracks:

• 2-track stereo recorder using 1/4 inch (6.35 mm) tape.

Tape Speeds:

• Supports 15 ips, 7.5 ips, and 3.75 ips (38.1, 19.05, and 9.5 cm/s).

Tape Transport:

• Servo-controlled tape transport with Hall-commutated brushless DC capstan motor equipped with capacitive tachometer for highly accurate tape speed.

• Spooling motors with pulse-width modulation control.

• Electronically controlled tape tension and non-contact tape tension sensor.

• Tape reel sizes up to 12.5 inches (31.8 cm) for metal reels or plates.

Audio Electronics:

• Balanced XLR inputs and outputs.

• Switchable equalization standards (CCIR/NAB).

• Independent input and output settings with memory storage for tape type A and B.

• Dolby HX PRO noise reduction standard.

• In-line or butterfly head configurations.

Operational Features:

• Digital real-time tape counter for all speeds with hour, minute, and second display.

• Edit mode featuring jog and shuttle functions.

• Multiple locator points for tape positioning (Zero locator, Locator 1, Locator 2).

• Master Safe-Rec Ready button.

• Programmable softkeys allowing functions to be mapped to keys.

• Library wind mode for reduced spooling speed.

• Auto-mute during fast forward and rewind.

• Built-in monitor speaker and headphone output with selectable monitoring of input or output signals.

• Drop-in recording and drop-out by pressing appropriate keys during play mode.

• Remote control capabilities, including RS232 interface and fader start options.

• Power supply selectable between 100 to 240 volts AC.

Physical Characteristics:

• Weight: About 49 kg.

• Dimensions: Approximately 1180 mm (H) × 630 mm (W) × 660 mm (D).

• Power absorption: About 90 W in stop, 150 W in play/record, and 190 W in fast forward/rewind.

Additional Notes:

• The A812 was designed to meet the demands of both analog and emerging digital studio environments.

• It features a robust and compact design suited for a wide range of professional studio, broadcast, and scientific applications.

• Equipped with high operating convenience through multiple microprocessors managing transport and audio parameters.

• Its system flexibility allows versions for mono, 2-channel stereo, or with timecode on the center track.

• The machine supports vertical, horizontal, and inclined operational positions.

The Studer A812 is considered one of the most advanced and reliable reel-to-reel machines of its era, combining precise mechanical engineering with digital control systems, delivering excellent audio fidelity and studio versatility