TEAC A-4010SL

The TEAC A-4010SL is a highly regarded vintage reel-to-reel tape deck from around 1970, known for its robust build quality and classic design. It is a 4-track, 2-channel stereo quarter-track machine with automatic reverse playback, making it convenient for continuous tape operation without manual flipping.

• Track and Head Configuration:
  4-track, 2-channel stereo quarter-track system
  Four heads: 2 playback heads, 1 record head, 1 erase head, enabling auto-reverse functionality.

• Tape Speeds:
  Two selectable speeds: 3¾ ips (9.5 cm/s) and 7½ ips (19 cm/s), both with ±0.5% speed accuracy.

• Motors and Drive System:
  Three motors:
  One hysteresis synchronous capstan motor for stable tape speed
  Two eddy current outer rotor reel motors for smooth tape tension and transport.

• Frequency Response:
  At 7½ ips: approximately 30 Hz to 22 kHz (±3 dB)
  At 3¾ ips: approximately 30 Hz to 16 kHz (±3 dB).

• Wow and Flutter:
  0.08% RMS weighted at 7½ ips
  0.10% RMS weighted at 3¾ ips.

• Signal-to-Noise Ratio:
  Around 55 dB weighted.

• Crosstalk and Channel Separation:
  Crosstalk: approximately 60 dB at 1 kHz
  Stereo channel separation: about 50 dB at 1 kHz.

• Inputs and Outputs:
  Two microphone inputs (0.3 mV minimum / 600 Ω)
  Two line inputs (0.1 V minimum / 100 kΩ)
  Two line outputs (0.3 V for 10 kΩ or more)
  Headphone output (8 Ω).

• Reel Size:
  Supports reels up to 7 inches (18 cm).

• Physical Dimensions and Weight:
  Approximate size: 44.2 x 44.3 x 21.6 cm (17.5 x 17.5 x 8.5 inches)
  Weight: about 20 kg (44 lbs).

• Additional Features:
  Separate bias and equalization selectors compatible with SLH (Super Long Play) tape types.
  Switchable meters for tape or source level display.
  Auto-reverse mechanism with an extra playback head to eliminate the need to flip the tape.
  Solid wood cabinet with stainless steel front panel, reflecting classic 1970s Japanese craftsmanship.
  Comes with standard accessories such as reel clampers, cleaning sticks, and connection cords.