“Yamaha DX-100 in overall very nice condition. Some light scratches.
New internal RAM battery installed prior to listing.
Slight dents seen in under where rightmost keys are. These were caused
by wrong size screws previously placed in the bottom. The correct sized ones are now used. These screws seal the synth and keybed well.
FM synth very popular to play bass lines, synth leads and generate talkbox effects.
Has guitar strap buttons so you can play it like a keytar.
Battery door present. May be powered with AC adapter (included) or 6 ‘C’ batteries.” Click here to visit listing on eBay
“Excellent condition, fully functional, Yamaha DX 100 Keyboard FM Synthesizer.” 
“Yamaha DX100 Synthesizer with Original Case in Excellent Condition #37567
“DX-100 is in excellent condition. Stored in box for many years. No dents or dings. Everything works. All graphic print is like new. Includes all the extras,including manuals.” 
“This item is,
“This Item has full functionality. Midi/outputs work and item sounds great. The only features I did not test were the foot pedal and breath controller as I do not have those peripherals
” Yamaha DX100. Unfortunately the screen is dead and does not work when the unit is turned on. The keys and all other features seem to still work fine. The first key is broken and does not work. No battery cover. Please take all this into consideration before bidding.” 
“Used(VG) Condition, has scratches and marks see pics:
“DX-100 is in excellent condition. Stored in box for many years. No dents or dings. Everything works. All graphic print is like new. Includes all the extras,including manuals.” 
“DX-100 is in excellent condition. Stored in box for many years. No dents or dings. Everything works. All graphic print is like new. Includes all the extras,including manuals.” 
“Perfect working order. Over 30 years old so As-is. 100% works as I’ve just replaced the battery.” 
“UP FOR AUCTION IS A VINTAGE YAMAHA DX100 DIGITAL ALGORITHM SYNTHESIZER. HAS BEEN COMPLETELY CLEANED OUT OF ALL DUST AND DIRT. FULLY TESTED AND IS IN 100% WORKING ORDER. ONLY COMES WITH THE ORIGINAL YAMAHA AC POWER CORD. NO BATTERIES, MANUALS OR CASE INCLUDED. COMES FROM A SMOKE FREE, PET FREE HOME. AMAZING PIECE OF EQUIPMENT. TONS OF FEATURES AND EFFECTS. WHAT YOU SEE IS EXACTLY WHAT YOU’LL GET. NO GENERIC PHOTOS.” 
“little sister of yamaha dx 27. in perfect condition, like new. Included: bag, PSU, brochure in Japanese.” 
“Purchased used at a local music store. It is in rough condition. It works well, except for the lowest C note is intermittent. No manual. It will be shipped in a box, well packed and protected. If you live in a remote area or any place outside normal UPS shipping, you will be charged for the additional shipping fees.” 
“Yamaha DX100. Hasn’t been used in a long time, so it is being sold as is. It does not have a battery or cords.” 
“Perfect working order. Over 30 years old so As-is. 100% works as I’ve just replaced the battery.” 
“This item is,
” This item is like New and never played out. Ram Battery brand new. Made in Japan,this is a great little Synthesizer.” 
“You are bidding on Yamaha DX100 DIGITAL PROGRAMMABLE ALGORITHM SYNTHESIZER with original Yamaha power supply.” 
“Selling my faithful dx100 which I’m abit sad about but it’s not getting the use any more.
“YAMAHA DX100 Classic vintage synth in good nick but three black and four white keys in the third octave not responding. Should be a fairly straightforward repair.” 
“In great condition, does have a few marks here and there. Can be used with batteries (not included). Battery compartment lid intact, clean battery bay with no signs of leakage. Has had a new lithium memory battery installed. Comes with suitable non genuine power adaptor (UK spec). Guitar strap pins have been removed and are not included.”
“Good condition,normal scratches” 
“This is an absolute must for any collectors, I purchased this synth in 1987 from Soho Soundhouse in London, I still have the original receipt. It has the original packaging, the box, the accompanying cassette’s, playbooks etc. The books even have the original bags, this is a mint collection, I have looked after it and probably never intended to sell, but I want to purchase a workstation.
“You are looking at a previously owned Yamaha DX100 Synthesizer. Does NOT come with a power cord. It is missing the back battery cover. The 2nd to last black key on the right side is stuck- when you push down it doesnt really go down all the way. The white key next to it appears to be broken and fixed at one point. When you turn it on the screen says “CNG RAM Battery!”. There is no sound that came out of the synthezier- we do not know if there is something else that is missing to make this happen or if this is how its supposed to be because it needs to hook up to something else. Overall its in good condition with standard wear and tear.” 
“Classic Synthesizer. Works great.
” YAMAHA DX100 SYNTHESIZER WITH AC ADAPTER and BATTERIES. ALWAYS CARED FOR, Some MINOR COSMETIC MARKS.
” Yamaha DX-100 in overall very nice condition. Some light scratches.
“Original 1980s Yamaha DX100 4-op FM digital synthesizer for sale.
“Comes with power supply, midi cable, output connector. Used very little. Satisfaction guaranteed” 
“Hello, this auction is for a Yamaha DX100 FM synthesizer. It’s a classic house and techno synth and sounds awesome. It works and looks great with some minor cosmetic issues – most notably it’s missing the volume slider cap (but the fader still works). There is some light scuffing and wear on the synth but nothing too major. All the buttons and keys work. The battery cover is intact although I’ve never operated it with batteries. The DX100 has been reset to original factory settings, and a Yamaha power adapter is included. The synth will be bubble wrapped and safely packaged with foam, and insured for the amount of the winning purchase. I love this synth but it’s time to part with it, so now it’s your turn to imitate every 90s Autechre track :)” 
“Classic ’80s synth in mint condition and working perfectly. Includes, manual, carrying case and power supply.” 
“Middle E needs to be replaced. It works but its not as smooth. Otherwise, keyboard works great.” 
“Yamaha DX100 in Very nice condition. Works perfectly.
“Auction for a Yamaha DX100 FM Synthesizer. Some minor cosmetic flaws, but is fully functional to my knowledge (tested, powers on, makes sound, all presets are functional, pitch controller, oscillator wheel, volume slider, etc. all working). Not skilled enough to have tried to make my own patches.