Yamaha Reface CS

37-key Mobile Mini Keyboard with 5 Vintage Synth Types, Onboard Effects, Controller Pedal Input, Built-in Stereo Speakers, MIDI Connectivity, Aux Input, and Dual Line Outputs
Yamaha Reface CS image 1
Yamaha Reface CS image 1
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Yamaha Reface CS
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Iconic Yamaha CS-series Sounds

Inspired by the iconic CS-80 polyphonic analog synthesizer, the Yamaha Reface CS mobile mini keyboard evokes the very essence of the legendary synth of yesteryear. Packed with five types of synthesis and onboard effects, the Reface CS provides you with a variety of lush pads, fat basses, and solo leads. Of course, the Reface CS wouldn't be a CS if it didn't give you tons of tweakability, that's why each type of synthesis has its own set of Texture and Mod sliders that take simple oscillator types and let you turn them into gentle soundscapes, mangled sonic carnage, and everything in between. At Sweetwater, the mere mention of the CS-80 commands instant respect, so we're absolutely thrilled to offer you the Yamaha Reface CS mobile mini keyboard!

Yamaha Reface CS Mobile Mini Keyboard Features at a Glance:
  • Analog Physical Modeling Engine with multiple synthesis and oscillator types
  • Onboard effects processor with five Types for adding depth to your sound
  • 8-note polyphony allows you to create complex chords and pads
  • Mono mode lets you create fat synth basses or solo leads
  • Phrase looper lets you capture song ideas or create "sound on sound" overdubs
  • HQ mini keyboard allows fast, natural performance with premium feel and response
  • Continuous controller pedal input for volume control
  • Stereo speaker system lets you take your sounds anywhere
  • Specially designed bass reflex port technology enhances bass response for full, rich sound
  • Can operate on 6 AA batteries for up to 5 hours for true portability
  • USB To Host port allows MIDI connectivity to your USB-equipped computer or iOS device
  • An aux line input lets you play along with mobile devices, tablets, and more
  • Dual line outputs provide connection to mixers, audio interfaces, DI boxes, and more
Take iconic synth sounds anywhere with the Yamaha Reface CS mobile mini keyboard!

Tech Specs

Sound Engine Type(s) Modeling engine with Pulse, Multi-saw, Oscillator Sync, Ring modulation and FM
Number of Keys 37
Type of Keys Mini synth keys with initial touch
Polyphony 8 note
Number of Presets 5 oscillators
Effects Types Chorus, flanger, phaser, delay, distortion
Sampling Phrase looper (up to 10 minutes)
Audio Inputs 1 x 1/8" TRS (aux in)
Audio Outputs 2 x 1/4" (left, right), 1 x 1/4" (headphones)
MIDI I/O 1 x MIDI jack with breakout cable
Pedal Inputs 1 x 1/4" (FC7 volume controller)
Power Supply 12V DC power supply or 6 x AA batteries (5 hour lifespan)
Height 2.37"
Width 20.87"
Depth 6.87"
Weight 4 lbs. 3 oz.
Manufacturer Part Number REFACE CS

Customer Reviews

Based on 5 reviews
Write your review

Best polysynth under $500

You will not regret buying this. The range of sounds you can make with this is unprecedented. Sound is on par with a Nord. All the demos of the looper are terrible, but it is actually very musical and creative, especially for ambient type music. LOVE the super saw. Run it through your favorite reverb and marvel. Even had some success making analog drum sounds. WAY more than advertised.


A brilliant little synth that requires you to create (or download others' creations). I like the fact that there are no presets, so I have to work for a sound. An excellent learning tool, but also sounds amazing on a recording. The Soundmondo app is a great way to store your creations, and see what others are doing with the CS (or the other Refaces). I uploaded a dozen patches so far, and it's pretty cool when someone checks out your patch and actually uses it. I would recommend this to beginners as well as those that are more advanced. I would have liked a reverb as an effect, and the ability to run two effects at once, but there is only so much space on the panel. Solidly built, and the best mini-keys I've ever played (I hate mini-keys). The built-in speakers are good, but I mostly use headphones. The under-the-panel controls are pretty easy, and they include an actual manual, which is cool. I'm actually tempted to do an entire album with just this synth.
Music background: Singer/songwriter, music engineer and producer. Stay-at-home dad (it applies).

Endless fun and inspiration

For a synth at this price and size, this little guy is amazingly deep in sonic possibilities, full of warmth and sparkle, and with a solid amount of control. I particularly love the smoothness of the mono mode when playing arpeggios, the feel of the keys, and the insanely wide range from warm basic tones to wild, pitchy, harmonically dense tones. I took off 1/2 star only because I do feel the EG when applied to the filter is a bit clicky, and there isnt a transparent transition between OSC choices. So there are limits, but consider the price - ultimately it's a powerful little machine that I'm already using for music and sound design.
Music background: Sound designer, composer, and location sound recordist

The First Modeling Synth Made By Yamaha In Years

It is rather like a Roland Gaia SH-01 with the polyphony of a micro-KORG and it even resembles a scaled-down Roland Gaia for appearance and instrument panel! But with a pair of built-in speakers!

Great little synth

I read and watched every review/video before getting this one. Lots of controversy on the mini-keys, it's toy-like plastic nature, etc.... I agreed that it was too much at $499, but $399 makes it a decent deal. Grab one, you won't be disappointed. I totally get the thing. It's a very well-built, small, portable instrument with very big sound, somewhat in the spirit of the CS-01, but of much higher quality. The sound is great, the only thing sort of missing is keyboard tracking for the filter. It can get a bit shrill in the higher octaves, and that would tame it. Many timbres from the oscillator, and the filter is fat and resonant. The effects are very good. I think any analog synth enthusiast could find something to like about this one. It goes without saying that Sweetwater has the best service in the industry. Keep up the good work.
Music background: hobbiest

Sweetwater Advice

Carson McClain

The Reface CS is a true CS! The biggest benefit is that it's NOT 260lbs, stuffed in a basement, or broken down in need of repair. Yes, it's a digital engine because miles of wire and thousands of capacitors will not fit in this form factor. But don't be fooled by it's digital engine, because this baby can get wild, nasty, and really kick you in the teeth when you start moving those faders. This synth will find its home in the production stusio, live rigs, and also school classrooms teaching brand-new synth nerds how to geek out. (Make sure you download the app for this, you'll want it for instant patch recall.)
See also: Yamaha, Yamaha Synthesizers