I bought this amp to replace an old pss donctionne very well but that is not right for me encintes. I use it for three months, it is quiet, quite heavy (the quality of transformer ring explains the weight), a ventilation and cooling eficace. It can turn a 95% power for hours and hours, virtually no heat, no distortion, a very eficase protection, no thanks to the relay internes.Il breath is not very expensive for its quality. I think if I had to buy another amp, I will take a model in inter-m. Very very good material.