I have 2 - decided to sell one of them as bi-amping everything in system was a bit overkill. Its a 5 channel THX Ultra certified Power Amplifier. Out of the 2 this seems to be a newer variant of the MKII, as instead of having THX on the front, it has THX Ultra. Also the markings on the back panel are akin to that on the RB-1075. As you probably know, the differences sonically between these power amps and say the RB-1075 are very very minor, so at a quite reduced price compared with a 1075 they're a very good buy. Also you don't see these for sale that often these days. There are some very minor casework marks/scratches, but overall condition is Excellent in my opinion. No original box, but have the manual. Now on Ebay- so please close