Yamaha's reface series of mobile mini keyboards offer recreations of legendary Yamaha keyboards, in compact 37-key form factors. Thanks to their small size, the reface keyboards are easy to grab and take with you on the road so you're ready whenever inspiration strikes. Plus, reface keyboards feature Soundmondo integration, allowing you to discover, connect, and share reface voices with the world.The reface DX is an FM synthesizer with a 4-operator FM sound engine that offers dynamic and expressive additive synthesis, and features continuously variable feedback on every operator, allowing for a wide range of sound creation. Plus, with the 32 voice memory locations on the reface DX, you can store and recall your favorite voices easily.Along with the flexible sound engine, there are two programmable effects blocks with seven effect types per block, including VCM Touch Wah, VCM Flanger, VCM Phaser, Chorus, Delay, Reverb and Distortion.Yamaha reface DX Features:Keyboard: Based on the FS action found on the flagship Motif XF, HQ (High Quality) mini keys provide premium feel and response for fast, accurate, and natural playingLooper: The integrated phrase looper allows you to capture song ideas or just jamPedal: Continuous controller pedal input for volume controlSpeakers: 2W 3 cm stereo speaker system lets you play any place, any time. Specially designed bass reflex port technology enhances bass response for full, rich soundBattery Powered: Uses six "AA" batteries with five hours of lifeUSB: USB "TO HOST" allows MIDI connectivity to your USB-equipped computer or iOS deviceAudio Output: Dual 1/4" unbalanced line outputs provide connection to mixers, audio interfaces, DI boxes, and moreAudio Input: A 1/8" (3.5 mm) aux line input lets you connect and hear mobile devices, tablets, and more through the instrumentSoundmondo Integration: Soundmondo is a free sound sharing community that lets you discover, create, and share reface Voices and Set Lists using Google Chrome. Powered by Web MIDI, Soundmondo is easy to use - just connect reface to Chrome and you're ready to create or start browsingYamaha reface DX Specifications:Amplifiers and Speakers:Amplifiers: 2W x2Speakers: 3 cm x2Power Supply:Power Consumption: 6 W (when using PA-130 power adapter)Battery Life: Approx. 5 hoursAuto Power Off: YesPower Supply:Adapters: PA-130 or equivalent recommended by YamahaBatteries: Six "AA" size batteries or Ni-MH rechargeable batteriesIncluded Accessories: AC Adapter, MIDI breakout cable, Owner's Manual, WarrantyVoice:Number of Types: 4 Operators, 12 AlgorithmsNumber of Voices: 32 (memorable)Effects: Distortion, VCM Touch Wah, Chorus, VCM Flanger, VCM Phaser, Delay, ReverbDimensions (WxHxD): 20-7/8" x 2-3/8" x 6-7/8" (530 mm x 60 mm x 175 mm)Weight: 4 lbs 3 oz (1.9 kg) not including batteriesKeyboard:Number of Keys: 37 keysType: HQ MiniInitial Touch: YesTone Generation:Maximum Polyphony: 8Engine: FMOther Features:Phrase Looper: YesDisplay: Full Dot LCD (128 x 64 dots)Connectivity:DC In: DC IN (12 V) jackHeadphones: 1/4" (6.3 mm) stereo phone jackMIDI: mini-DIN In/OutAux In: 1/8" (3.5 mm) mini stereo phone jackOutput: L/MONO, R 1/4" (6.3 mm) TS phone jack, unbalancedUSB To Host: USB (TO HOST)Pedal:Type: Sustain - FC3(A), FC4(A), FC5 (each sold separately)Half Damper: No Yamaha REFACE DX 37-Key Mobile Mini FM Synthesizer.