This was the base model without the Celestion Blues. I was very impressed with the amp! I used a Jimmy Vaughn Strat and a 61 reissue SG straight into the amp. The patented chime was there, the overdrive was rich and harmonic and the master seemed to be very effective. I played it at a moderate volume - certainly enough to get the speakers moving. I loved it! IMHO, this is a hell of a bargain at $999. I may have to find a used one.