We can accept analog 2-track (aka “half- track”) reel tapes at 1/4" or 1/2" widths, and at 15ips or 30ips speeds. We can also accept 1/4" 2-track tape at 7.5ips, as well as 1/4" quarter-track (2 separate stereo tracks going opposite ways) reels at 3.75ips or 7.5ips, but these generally give inferior results. Please make sure that you include a track sheet indicating tape speed, what eq curve was used (i.e. NAB, IEC, CCIR, AES), what tones are recorded, if any noise reduction has been used and if so what type, titles and order of tracks and their start and length times. Please include test tones at 0dBVU at the tail of the tape of at least 30 seconds of 100Hz, 1kHz, and 10kHz at the minimum. We also prefer to receive tones at 16kHz - and extra kudos if you also include 50Hz, 500Hz and 5kHz tones. If you don't have any way to generate calibration tones for yourself you can download these here: 1kHz, 10kHz, 100Hz (required tones) 500Hz, 5kHz, 16kHz (additional tones) sweep from 20Hz - 20kHz Please send tapes tails out, with leader at the heads and tail, and if possible with leader seperating each track, and leader separating the tones from the tracks. We prefer to receive tapes without any noise reduction. If you do use noise reduction please make sure you specify which type on your track sheet and include calibration tones at the head of your reel. Please note that there is the possibility of an additional charge to cover the rental of a particular NR decoder if we do not already have this readily available to us.