Check the listing for details. Yamaha Montage M8x 88-key Synthesizer. Condition: New. Listed at 4499.99 USD. Yamaha’s Next-gen Flagship Synth Yamaha’s professional synthesizers have reigned as industry leaders for decades. Now, the company again advances the state of the art with the Montage M8x — a flagship synth so powerful, it’s the only keyboard you’ll need to ace any studio session or stage performance. This next-gen synth powerhouse packs the latest technology with three beastly sound engines that can create jaw-dropping renditions of any instrument you could ever imagine, while new performance controls, workflow enhancements, and a 7-inch TFT color touchscreen allow you to access all this power effortlessly. For authentic grand piano feel that will satisfy even the most discerning pro pianists, the Montage M8x boasts Yamaha’s fully weighted GEX action with polyphonic aftertouch.