Country of Manufacture:Switzerland
Speeds: 3 3/4, 7 1/2, 15
Max Reel Size("): 10.5"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 3
Voltage(s): 110-120v, 220-240v
Frequency Response:(from tape at - 20 VU): 3¾ ips: 30Hz to 16kHz +2
Wow and Flutter:
Sound quality rating:8 / 10
Long-term reliability rating: 8 / 10
A two speed high quality tape deck featuring integrated control logic with tape motion sensor providing for any desired transition between different operating modes, contactless electronic switching of all motors. Available in either half or quarter track models.
Sturdy aluminium die-casting for the chassis, head block, pinch roller and mechanism was used and each mounting point was painstakingly machined for extraordinary tolerances.
Studer-Revox manufactured its own drive and winding motors so their characteristics were optimized for recorder use.
Mk II version is the same as the Mk I except it adds a speed adjustment knob under the built-in editing block.
Wow & flutter: at 3¾ ips < 0.1%: at 7½ ips < 0.08% (DIN) / Tape slip: maximum 0.2% / Signal to noise ratio: Half track: 3¾ ips >64dB. 7½ ips >67dB Quarter track: 3¾ ips >60dB. 7½ ips >63dB / Equalisation (NAB): 3¾ ips: 90 microsec / 3180 microsec: 7½ ips: 50 microsec / 3180 microsec / Crosstalk: at 1kHz stereo >45dB, mono >60dB / Distortion: 3¾ ips at 0VU <1%, at 0VU+6dB <2.5%. 7½ ips at 0VU <0.6%, at 0VU+6dB <1.5% / Level metering: VU meter as per ASA standard, with LED peak level indicators / Peak recording level: 514 nWb / m corresponds to 6dB above 0VU / Erase ratio: at 7½ ips >75dB / Semi-conductors: 11 ICs, 1 opto-coupler, 4 triacs, 60 transistors, 33 diodes, 5 LEDs, 2 full wave rectifiers, 3 relays / Rewind speed: approximately 135 seconds for 3,600 ft of tape / Inputs: mic Lo 0.15mV / 2k2ohms for low impedance microphones mic Hi 2.8mV / 110kohms for high impedance microphones radio 2.8mV / 20kohms aux 40mV / 220kohms / Outputs: amplifier: 1.55V / 390ohms adjustable with preset radio: 1.55V / 4k7ohms adjustable with preset headphones: 5.6V / 220ohms adjustable with control / Dimensions: 17¾ x 16¼ x 8¼ ” (452 x 414 x 207mm) / Weight: Approximately 37.4 lbs (17kg) / half or quarter-track stereo versions produced