I would NEVER buy or keep an amp that required an hour to sound ’best’.
But if you leave them on all the time, they're always ready! 😃
Pass Labs Amps - Does the heat bother you?
I am very intrigued by pass amplifiers (NOT the intergateds). I have heard many good things about them. However, I also have heard from many people that they get really hot. I am interested in the stereo amps.... like the X350.
Curious, if you own one or used to own one... how do/did you deal with the heat? I wouldn’t want it heating up my living room where the AC runs more (which kills my music enjoyment session).
Also, I usually leave my amp on from 5:00 pm till I go to bed (anywhere from 9:00 pm to 12 am). Not sure how that would come into play if a pass labs would be a good fit for me.
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Case in point: https://liquidaudio.com.au/wp-content/uploads/2026/04/Plinius_Model_10_monoblock.pdf The top paragraph of page 2 is directly relevant to this conversation. |
2 days and 45 posts and nothing from the OP, yet here we are... So...I'm curious why would anyone leave an amp running constantly (unless it was recommended explicitly in the IFU)? Also why not add a fan? T+A advised no fan needed if proper clearance was provided but no reason not to help the amp run a little cooler. |
@OP - there is absolutely no need to leave power amps on permanently. As to your question, the X Series Passlabs amps have a negligible impact on ambient temperature. The XA series run warm - the 60.8's dissipate close to 400W per chassis. They are very well heatsinked so not an issue in terms of reliability. The XA amplifiers deliver 90 percent of their sound quality after 60mins of warm up and 100 percent after two hours. If you are bothered about heat, get the X series amplifiers. All of the Passlabs amplifiers are superb in terms of sonic performance. |
It was once common practice for manufacturers of high-end solid state gear to recommend leaving their products on at all times. My Krell preamp’s manual says so, and it’s been on for about a year now, as have my Classe monoblocks. . The Krell doesn’t even have a power switch, as a matter of fact. I do turn my sources off.y As to why, as explained before, on the whole our gear is better off being on all the time than being turned on and off willy-nilly; and there is no "waiting period" whenever an impromptu listening session strikes one’s fancy. No one said you have to leave it on. At the end of the day, it’s your choice.
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