Just scored this Reel to Reel for my system, an Akai 4000DS i was able to date back to 1971, in mint condition after some minor cleaning : r/vintageaudio
A BOXED VINTAGE AKAI 4000DS REEL TO REEL TAPE RECORDER AND TWO BOXES OF TAPES
Buy Vintage AKAI 4000DS MK-II VINTAGE STEREO REEL TO REEL TAPE RECORDER (1973-78) Sale Pune-India
Akai 4000DS Reel To Reel Tape Recorder Spare Parts record switch | eBay
Akai 4000DS Mk-II reel-to-reel recorder, made in Japan