Otari MX-5050 BIII-2 Tape Recorder

This MX-5050 is fully functional and in good condition. 
Comes with rack mounting hardware, CR-705A Remote, Magnetic Leader Tape, additional KWOH009 reel hub, Magnetic Reference Laboratory Reproducer Calibration Tape, ATR Magnetics Studio 1/4" Master Tape, and PSU. 

The MX5050 BIII has long been the standard in 1/4” 2 track analog recorders. It features an optimized three-head design and transformerless balanced inputs and outputs to provide superior frequency response, low distortion and high signal-to-noise performance under the most demanding conditions. Record setup adjustments can be made from the front panel, and a convenient built-in oscillator provides test tones for calibration/maintenance. The direct drive capstan motor is servo-controlled, and an integral microprocessor governs tape handling, including dynamic braking, motion sensing and transport logic. A built-in miniautolocator provides three onetouch cue-point memories, search zero, and a repeat function. The tape timer display shows tape time in Hrs/Min/Sec., as well as tape speed in inches per second and percentage of tape speed. Capstan speed can be varied by ±20% in 0.01% steps using the built-in “pitch” control. Time-code editing using a synchronizer is accomplished via the 37-pin Otari standard parallel interface. The extremely rugged mechanical construction includes a 1/4” deckplate with cast aluminum side panels and steel support members. All circuit boards are designed to swing out or unplug for quick service access.


  • Positive-action transport controls
  • Balanced transformerless XLR I/Os
  • DC capstan, Quartz PLL servo-controlled
  • Built-in mini-autolocator
  • Rehearse function
  • Automatic monitor switching
  • Built-in test oscillator and external oscillator input
  • Variable pitch control (±20%)
  • Front panel record setup adjustments
  • 1/4” deck plate with cast aluminum side panels and steel support members


  • Track system: 2-track, 2-channel, stereo system
  • Heads: 1 x 2T playback, 1 x 4T playback, 1 x record, 1 x erase
  • Motor: 2 x reel, 1 x capstan
  • Reel size: 7 or 10.5 inch reel
  • Equalization: NAB, IEC
  • Tape speeds: 7 12  15 ips
  • Wow and flutter: 0.06% (15 ips)
  • Frequency response: 30Hz to 20kHz (15 ips)
  • Signal to Noise Ratio: 66dB
  • Total harmonic distortion: 0.5%
  • Dimensions: 527 x 430 x 225mm
  • Weight: 24kg
  • Note: 7.5 and 3.75 ips capable