Dokorder 8140 Reel to Reel 4 Channel Recorder, Working / Very Good Condition. Domorder 8140 Reel To Reel – The deck plays forward. This deck has “Sound on Sound” (SOS) and “Record Echo” features. Great for self “Dubbing” tracks. Note: Sly and the Family Stone Reel Tape was used to show Forward playback, FF and Rew functions and IS included! Every function switch and dial responds however I have not attempted to record. There is always a risk that periodic cleaning, or repairs will be needed to to keep it functioning perfectly given that it is a “Vintage” machine.