Auto-Reverse Recording
Auto-reverse recording lets a tape machine record in both directions, changing direction without manually turning the tape over.
The feature concerns recording as well as tape movement. A machine that automatically reverses during playback may still record in only one direction.
Auto-Reverse Recording — Cassette Deck
On a cassette deck, this allows a recording to continue onto the second side without removing the cassette. Select the documented recording direction and reverse mode: starting on the second side may leave only that side available before the deck stops.
Compare recording modes specifically, rather than relying on an auto-reverse label or a playback symbol. The direction change and the cassette's unrecordable leader can interrupt the recording, so this is not a promise of an unbroken recording across both sides. Both sides must also permit recording through their erase-protection tabs.
Auto-Reverse Recording — Reel-to-Reel
On a reel-to-reel machine, reverse recording uses the tracks intended for the opposite direction without exchanging the reels. Check the track format and the recording modes together; reverse playback capability alone does not establish that the machine can record those tracks.
The reversal trigger also matters. Some machines require sensing foil on the tape to switch direction automatically. Compare the documented tape preparation and stop behaviour before leaving a recording unattended. Automatic reversal reduces handling, but does not guarantee a seamless recording at the changeover or make tapes recorded in different track formats interchangeable.