Otari MX-5050 BII-2

The Otari MX-5050 BII-2 is a professional ¼-inch reel-to-reel tape recorder widely used in studios for mastering and high-fidelity audio recording. It is part of the MX-5050BII series, known for robust construction, precise tape transport, and versatile features.

• Tape Width and Tracks: Uses ¼-inch tape, configured for half-track 2-channel recording and 4-track 2-channel playback (switchable via a flip-up head cover).

• Tape Speeds: Operates at 15, 7½, and 3¾ inches per second (ips), with variable pitch control available and defeatable at all speeds, usable in both recording and playback modes.

• Heads: Four heads total — half-track erase, quarter-track playback, half-track record, and half-track playback; head composition includes ferrite/glass and metal, arranged in a stacked/inline configuration.

• Drive System: Direct-drive capstan motor with quartz PLL servo control, eliminating belts for precise speed stability and smooth tape transport.

• Reel Size: Supports reels of 5, 7, and 10½ inches.

• Equalization: Switchable NAB and IEC standards.

• Signal-to-Noise Ratio: Approximately 66 dB.

• Frequency Response: 30 Hz to 20 kHz at 15 ips.

• Wow and Flutter: Less than 0.05% (NAB).

• Motors: Three motors — one direct-drive capstan motor and two reel motors.

• Controls and Features:
  Front panel adjustable record bias, levels, and equalization for quick tape calibration.
  Built-in test oscillator with two frequencies for calibration and maintenance.
  Variable pitch control ±20% in 0.01% steps.
  Built-in mini-autolocator with three one-touch cue-point memories, search zero, and repeat function.
  Computerized digital time display showing tape time (Hrs/Min/Sec), tape speed, and pitch percentage.
  Edit control permitting spilling and selective reproduction modes (e.g., overdubbing).
  Motion sensing and dynamic braking for gentle tape handling.
  Active balanced transformerless XLR inputs and outputs.
  Separate line and microphone input level controls per channel.
  Memory stop function for automatic tape stop during rewind at preset positions.
  Adjustable cue for audible monitoring during fast-forward and rewind.

• Dimensions: Approximately 527 x 430 x 225 mm.

• Weight: Around 24 kg.

• Build Quality: Rugged deck plate with cast aluminum side panels and steel support members for durability and serviceability.