For the recording of our tapes, the original 1/4" 15 ips NAB or CCIR master tapes were played on a Nagra-T tape recorder, modified with high-end tube playback electronics, wired with OCC silver cables from the playback head direct to a Nick Doshi tube head preamplifier. The Nagra T, with its four direct drive motors, two pinch rollers and a tape tension head, is one of the best transports ever made. A custom-built carbon fiber head block and a head damping electonic system permit 2XHD FUSION to obtain more trasparency and better 3D imaging. All copies are recorded on a Nagra IV-S 1/4" at 15ips.