BRYSTON and PASS LABS both made incredible amps that are built like tanks and will last as long as you wish them to. They are expensive, but at least in this case you will get every penny's worth. These are both products that simply don't decay with age. Either one will drive the Martin Logan's to their fullest sonic capability. I have heard both. The fact that you are a heavy rock listener makes me hesitate to recommend any tube amps. Most "Rock Guys" don't care for the sound of tubes.
But if I were, it would be PRIMA LUNA EV400'S with the EVO400 preamp. The key to "rock" in this case would be to load the EVO400 with a full set of TUNG SOL KT150's. I believe it would change your mind about tubes very quickly.
But if I were, it would be PRIMA LUNA EV400'S with the EVO400 preamp. The key to "rock" in this case would be to load the EVO400 with a full set of TUNG SOL KT150's. I believe it would change your mind about tubes very quickly.