Unique Rober Fripp - Frippertronic -Brian Zeno tape loop set up .. . 2. x AKAI 4000DS STEREO REEL-TO-REEL TAPE DECK - for Fripppertronic echo system see images . 2 x Akai 4000DS is a four-track, two-channel stereo reel to reel tape recorder for use with 7" reels. Used. All in working order on both machines. . 2x machines and the Fripertronic tape feeder as seen in the photo is what you get . ALL Parts working, Part of a Robert Frripp Echo System . Specifications Track system: 4-track, 2-channel, stereo/monaural system 3 Heads: 1 x record, 1 x playback, 1 x erase Motor: 1 x SSM-1 4-pole induction Reel size: up to 7 inch reel Tape speeds: 3 3⁄4 and 7 1⁄2 ips Wow and flutter: 0.15% (7 1⁄2 ips) Frequency response: 30Hz to 23kHz (7 1⁄2 ips) Signal to Noise Ratio: 50dB Total harmonic distortion: 1.5% Crosstalk: 50dB Input: 70mV (line), 7mV (DIN), 0.8mV (mic) Output: 1.228V (line), 0.4V (DIN) Semiconductors: 11 x transistors, 4 x IC, 4 x diodes Dimensions: 406 x 314 x 194mm Weight: 11.4kgo. . Will also list the Robert Fripp Echo System we Build