Hi George: I've done #1 many times and it works as long as the tracks can be adjusted into azimuth with each other (not always the case if the half track head was way off-azimuth in a manner that the azimuth "bows outward" toward the edges). Keep in mind that with high-quality music recording, you can hear a different between a track that was actually played front-to-back and one that was played in reverse and then digitally made front-to-back. Richard Hess will hopefully explain why, it has to do with how tape machines deal with attacks and wave fronts. The difference shouldn't be drastic, but I find it audible. With lower-quality content, it doesn't matter, to my ears. I don't recommend #2. Get a full-track head, although that too presents problems with warped or badly slit or shrunken tapes. With tapes that don't ride well in the transport, I've had good luck using a Tascam 4-track quarter-inch machine and using either the least-noisy track or, more commonly, the two center tracks, providing I can get them to maintain good azimuth. -- Tom Fine ----- Original Message ----- From: "Gregorio Garcia Karman" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, January 05, 2012 9:53 PM Subject: [ARSCLIST] transferring open reel tapes - track formats Dear list, considering the possibility of the following compromising solutions in the digital transfer of open reel tapes... 1. playing a mono half-track open reel tape on a stereo machine and reversing the channel playing in the wrong direction digitally. 2. playing a full-track mono tape on a stereo machine. ...what are the considerations that speak against those? Thanks for your advice Gregorio