“Item: Yamaha rack model TG-55 – vintage digital synth. Good working condition.
The 1/4′ cable slides out of the mono jack with less resisitance than usual, so it’s had some use over the years, but again works great. Some tape residue and scratches as shown. The display shows a reflection in the photos but is without blemish.
It has patches in the “I” bank that do not have “I” multi’s but it’s an awesome set. All the “P” multi’s are there.
Seller description: This rack is less rare, but that makes it an excellent value, so we put it up for the lowest price on ebay.
This is the same model used by Paula Abdul and others and has iconic sounds. Sounds awesome really!” Click here to search for synths on eBay
“YAMAHA TG-55 Tone Generator Synthesizer, HJ90 Made in Japan . Condition is Used.”
“Up for Auction Today is..
“Rare Yamaha TG-55 TG55 *1989* midi synthesizer rack PCM tone generator – Working.”
“Perfect working condition.”
“16 bit sample playback based working synthesizer. Released in 1989. Been in original box in storage for many years, and looks brand new.”
“Yamaha TG55 sound module, all functioning fine (for completeness there is a very small amount of noise from the main volume control at low levels)
“Legendary Yamaha TG-55 Ton Generator it is rack-mount version of SY-55 synthesizer, in very good working and cosmetic condition, all buttons knobs and LCD works fine no issues.
“Yamaha Tg-55 synth. Works perfectly. Capable of such deep and moving sounds, along with orchestral. With rack ears. An under the radar wonder.” 
“Full working order, just a couple of scratches on the case.”
“The Yamaha TG55 is a pressure and velocity sensitive 1U rack (16 voice multitimbral) sample based synthesizer, works” 
“Used Yamaha TG55 Midi Rack Digital Synthesizer. Device is in good condition. Missing the knobs for volume and data entry (as seen in pictures).