This is the “baby” McIntosh solid state amp. It is not as physically imposing as some of its larger models and will easily slot into an AV rack. Power output is a robust 150W and will be adequate except for the more demanding speakers. Which was the case in point when the previous owner of this unit upgraded his speakers to the Magnepan MG20.7 and wanted a more powerful amp to drive the current hungry speakers. So he traded it in for the MC452 that we had for sale. He also has another NEW in the box MC152 which he did not open yet that is also for sale. Contact us for pricing on the NEW in the box unit. Listing and price is here is for the open box, less than a year old unit. This unit is in fantastic condition. We have the original box and manual.