” Nice 707 from Japan – all keys are crisp and responsive – powers and is responsive, tested w/headphones and capable of quite funky tones/note although there is no manual or way to fully test all the features as this isn’t my wheelhouse, comes with the one card as shown, please review all the photos – -” Click here to visit listing on eBay
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Korg 707
” Korg 707 FM Synthesizer Keytar w/Case 1987 Black, Great Condition. Condition is “Used”. Hardly used… non smoking studio. Everything tested great but don’t need this keyboard. I have to let it go, sadly…. if you have a guitar strap you can rock out with it!
“Korg 707 FM Synth. Condition is For parts or not working.” 
“VERY GOOD This item is rated in Very Good condition. That means that this item is between 80-89% of original condition. This item has been tested as fully operational and includes only what is photographed in the listing. The photographs are of the actual item for sale.” 
“In good working, clean condition. KORG 707 Performing Synthesizer w/ Korg PSO-200 707 memory card + adapter + cords.” 
“VERY GOOD This item is rated in Very Good condition. That means that this item is between 80-89% of original condition. This item has been tested as fully operational and includes only what is photographed in the listing. The photographs are of the actual item for sale.” 
“This synthesizer is in amazing condition for its age. Works perfectly, includes keyboard and original power supply.
“Powers up and sounds awesome. Screen is visible and clean with some minor marks. Board itself shows some play wear and marks , mainly on the front corners. Has two broken keys (Eb2 and F#2) but the contact under the key still works.” 
“Korg 707 Performing Synthesizer Vintage Black Synth Digital FM Keyboard . Condition is Used.
“In great shape and works.
“Korg 707 Strappable Synth. Condition is Used. I’ve had this synth since new 1989 and for many years it was my main keyboard for sequencing and triggering my other rack mount synths. It has its own set of fm based sounds… one or two are quite good and you can also use it live with a guitar strap should you wish as it works both on batteries and power supply. The spring has gone on the first D key…. happened once before back in the 90s and I had it fixed: unfortunately it seems to have gone again. Simple fix apparently but beyond my skill set.” 
“This 707 is in perfect working condition and in Very Good condition.
“Korg 707 Performing Synthesizer
“This 707 is in perfect working condition and in Very Good condition.
“Good condition. Some light marks, scratches and some words in faded marker. Tested and working. Unable to test disk drive, selling as is. Please see all pictures for more details. Please ask any questions that come up!” 
“Korg 707 Vintage Synthesizer KEYTAR w/pwr supply TESTED Works -no headphone jack. Condition is Used.
“This 707 is in perfect working condition and in Very Good condition.
“Comes with power brick and carry case. 3 keys are intermittent – could be a quick fix for those that know how. However, it works faultlessly as a midi sound module.” 
“Korg 707 left behind by old roommate-has been stored in closet for years-was bought new and used very little and was given to me as payment for rent. I am not musical at all and dont know anything other than with batteries it turns on and does what I am told it is supposed to do-dont have an amp or anything to play this with. ”