I don't understand-after my Musical Fidelity M6i amp warms up for about an hour I notice the deep bass & kick drum aren't the same. They sound less musical with loss of weight/depth.The notes are there but the moving of air have left.Sound is has much less impact and boreing. I had the same problem with Bryston amp so there is no defect with amps nor with the rest of my equipment/ PSB Synchrony one speakers,AQ cables,Bryston CD Player. My question has anyone heard similar & is there a plausable reason?
If some or All output transistor without good contact to their heat-sink, the output transistor will run very hot. (The amp dosen't feel hot Can it still be running hot?)
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