It is recorded in four track at 7½ IPS .
This is not 2 stereo tracks (often referred to as 4 track) but a genuine 4 track recording across the full width of the tape (single-sided).
Ideal for speed check, stereo check, fidelity check, level adjustment and head alignment.
Supplied with instructions. Recorded on a calibrated Reel to Reel Recorder.
The Level adjustment tone at 7½ IPS has a reference flux of 180 nWb/m which is the Ampex Domestic Standard ideal for consumer machines.