The Yamaha CK61 is a compact stage keyboard built for performing musicians who need piano, organ, and synth sounds in one portable instrument. Its 61-key FSB keyboard uses initial touch response, while 363 onboard voices cover Yamaha grand and upright pianos, electric pianos, organs, strings, brass, synths, and additional keyboard sounds.Fast Control for Live PerformanceThree independent sound parts can be split, layered, mixed, and processed directly from the front panel. Dedicated organ controls include nine drawbars, rotary speaker controls, percussion, and vibrato or chorus, while Filter and Envelope Generator controls provide direct access to commonly used synth parameters without deep menu navigation.Effects, Audio, and MIDI IntegrationCK61 includes dedicated Drive, Effect 1, and Effect 2 processing, plus delay, reverb, and three band Master EQ. Stereo A/D inputs accept a microphone or another instrument and provide dedicated effects. A built-in 44.1 kHz stereo USB audio interface handles audio input and output with a computer or compatible device, while USB MIDI and 5-pin MIDI In and Out support external instruments and software.Dual 6W amplifiers and built in speakers support rehearsals and portable playing without external amplification. The CK61 can run from the included or region dependent AC adapter or eight AA alkaline or rechargeable NiMH batteries, with up to 4.5 hours from rechargeable batteries and up to 3 hours from alkaline batteries.