MRL 1/2 Reel to Reel TEST Calibration Alignment Tape Magnetic Reference Lab 31J219
Calibration Test Tapes
Nagravox Calibration kits are different to what you might expect. A lot more than just a calibration tape! Developed over the last 3 years
GENERIC Setup Calibration Kit for most 'other' tape machines
Audio Cassette Speed Calibration Test Tape - Free Shipping
Jay McKnight: Behind the Gear with Magnetic Reference Laboratory, Tape Op Magazine
Choosing and Using MRL Calibration Tapes, PDF, Equalization (Audio)
DCC calibration cassettes - DCC Museum Forum
MRL Closing at Year End
Where to buy tape accessories – Dave Denyer: The Reel-to-Reel Rambler
STUDER A810 NEW EPROM chip sets EUR 117,79 - PicClick FR
Calibration tapes for cassette decks