With hundred programs varying from basses, drums, rhythms, huge synths to rave sounds and everything between, Kaossilator is capable to provide sounds you need in huge variety of scales. It also has arpeggiator and it is portable, light weight, fun to use and intuitive.

In full working condition. Battery compartment is clean without leaks and the battery door is also included. I have used this with batteries, but this can be powered via external PSU also. The sale only includes the unit. The knob on this one is not the original, but it does the job.

What internet says:

The Kaossilator features one hundred programs, which are mostly synthesizer voices and sound effects, including acoustic (guitar, trumpet, piano), percussion, and electronic sounds. The last 10 programs are complete rhythm-patterns, but since percussion sounds are included in the programs, users can develop their own rhythm-patterns by layering multiple overdubbed sounds. Programs are indicated only by a letter-and-two-digit designation on the LED display but are given specific names in the instructions. Most instruments can be locked into various keys and scales. The Kaossilator supports 31 different scale patters including chromatic, blues and diatonic scales as well as more exotic scales such as Japanese and Egyptian.

The Kaossilator also has a gate arpeggiator and a loop function that allows the layering of instruments to produce loops. The loop recording function is somewhat limited, as the maximum length is two bars in 4/4 time. Despite this limitation, some artists have recorded full-length albums with the Kaossilator.

It is possible to overcome the two-bar limit as the Kaossilator records audio to memory. To do this the user sets the tempo to the desired value – 150 for example – and records his part. The tempo is then set to exactly half the tempo of before, in this case 75. When played back one hears the first two bars but then two more will be available afterwards.

Another way to fully overcome the two-bar limit is by powering up the Kaossilator while holding down the Tap and Loop Rec buttons. Doing this will make four bars available (by setting the Loop Length to 16), but this disables the Undo function.