This offer is for one pair of Theta Digital Citadel 1.5 mono blocks matched s/n set in silver finish. These are the $25K retail 1.5's versions, not the 16K 1.0 version. If you are looking at this, then you probably know how amazing these amplifiers are. Known to be one of the best mono block amplifiers ever made, these amplifiers have the best overall sound I have ever heard in my own system. These are the most transparent amplifiers I have ever heard with the widest and deepest sound stage by far and amazing "tube like" mids. I really hate to sell these, but I need to clear out some gear to help fund a new dedicated 2-channel room. These are in excellent condition, one is just about perfect, I would rate it a 9, and the other has one very small nick shown in one of the pictures, but is not noticeable from a few feet away., I rate that one an 8. These will come to you with all original packaging including manuals, power cords, and their double boxed shipping cartons. These are very heavy at 133 lbs per box. The Shipping cost will be double as there are two shipping cartons. Local pickup is also welcome and recommended. Make me an honest offer as I'm a very motivated seller. Thanks for looking!