A lot of players heat up the discs pretty good. Normal stuff, I say.
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I've owned a PrimaLuna CD player for almost four years. Use it daily. After an extended session, the discs do seem to become quite warm. If you're concerned about possible ramifications/complications, contact Kevin Deal at Upscale Audio. (I suspect the warming is normal for the machine and poses no serious problems.)
Thanks for your reply, I have contacted Upscale Audio... Was contacted by someone called Sean, he couldn't shed any light, but will talk to some technicians for some more information.
Im a bit concerned about CD warpage??
This is my first tube/valve CDP....
I purchased the CDP from someone on a hifi site here in Australia calked Stereonet. He'd never removed it from the packaging, so I scored a bargain, unused brand new unit.
I havent even burnt it in yet..
I've been running a PrimaLuna ProLogue 8 CDP for quite a few years now and have yet to run across a noticeably warm disc but I usually change discs after each play maybe cutting back to a favorite track or two but even then I have never a noticeable a change in disc temperature when pulling it from the tray. One does have 6 vacuum tubes above the CD drive in the PrimaLuna CD players but even with that, it would take a direct heat source to even begin to disfigure a CD. Personally I wouldn't worry about it and just enjoy the music.