Magnetic Reference Laboratory Reproducer Calibration Tape, model 21L221. Professional 30 in/s (760 mm/s) calibration tape with AES (IEC2) equalization and 250 nWb/m reference fluxivity. Multifrequency calibration program at 0 dB, includes 1 kHz azimuth / frequency-response tones. Width 0.25 in (6.3 mm), program length 5.5 minutes.
Serial: SN 138 818 - Date/lot: M2013-10. Supplied wound tail-out (per MRL: place on take-up side and rewind before use).

***Use Once purchase in 2022

Program Content
• Multifrequency calibration (0 dB reference)
• 1 kHz azimuth / frequency-response tone
• AES (IEC2) EQ, 250 nWb/m ref

Condition
Tape: Open but like new- appears clean and properly wound; not playtested.
Reel: Original 1/4″ reel in excellent cosmetic condition.
Box: Light shelf wear only (see photos).
Labels/Spine: Model, speed, EQ, and fluxivity fully legible.

Details
Brand: Magnetic Reference Laboratory (MRL)
Model: 21L221
Speed: 30 IPS (760 mm/s)
Equalization: AES (IEC2)
Ref Fluxivity: 250 nWb/m
Width: 1/4″ (6.3 mm)
Program Length: ~5.5 minutes
Orientation: Tail-out (rewind before use)
Catalog/Notes: “MRL Reproducer Calibration Tape / Multifrequency at 0 dB / 1 kHz Azimuth