This is a Reel to Reel ¼ track test tape.

It is recorded in Stereo at 7½ IPS on one side and 3¾ IPS on the other.

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 7 1/2 IFPS has a reference flux of 180 nWb/m which is the Ampex Domestic Standard ideal for consumer machines.