76 Jonathan A. Sipes......maker of aluminum dust. 2 months ago I don't know why people rave about their old amps (which I think are beautiful but don't compare with the better newer amps for sound). I've never found another amp that sounds like a tube Standel, and a 50s 50L15 can be had for cheaper than a new 25L15. I have both, and rave about both. Saying the old ones "don't compare with the better newer amps for sound" is about the farthest from the truth, in my experience.