This is an Alesis HR-16 drum machine, with a unique circuit bending mod done by TableBeast a number of years ago. It functions as a the Alesis HR-16 should normally and can be circuit bent with the use of 1/4" patch cables. I used this on a number of projects and it creates amazing sick beats. The jack panel was missing the original Alesis panel so TableBeast hand identified the jacks and controls. I will miss this one for sure but no longer have a need for it. it has been very reliable and I recently reinstalled the factory settings and sounds. I will be also selling my Circuit Bent Casio SK-01 in another listing also bent by Tablebeast.