I know this is an old thread but needed to add my 2 cents. I acquired my SA-5151 6yrs ago and was not coming out of protect - I replaced all transistors in both drivers and she was singing once again.. I like the sound of this receiver so much I decided to do a Re-cap on it. I have literally had so many Marantz, Sansui, Luxman even tube amps that have come and gone , still have the 5151 , that said I too also have a beautiful Marantz 2285B in walnut case and testing the 5151 (85W) along side the the marantz 2285 (85w) They are very very close but I'd say the edge has to go to the 5151. Iam keeping the Marantz just because but it don't out perform the 5151 at a fraction of the cost of the Marantz. In a blind test Iam saying the 5151 beats the 2285B. And unlike the some of other reviews on here I believe the 5151 too be a warm sounding receiver like the marantz with the same bass punch they have but the 5151 has better clarity in the mid-highs , A wonderful sounding receiver - one of my best- Sound wise- cost wise it's the best bargain out there. The only negative is it's size - it's a 41lb monster and a fairly rare bird as they don't come up for sale very often.