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In Reply to: RE: tube change on CD Player posted by rbyar on February 10, 2012 at 22:07:01
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hmm...
funny, how different individual experiences can be - the sovtek 12AX7LPS was one of the most boring twin triodes i ever heard in MY gear...
Nunki
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I do not use the 12AX7LPS either.
The 5751 is a zippier tube. What I like about the LPS is its neutrality and balance, which can equate with boring in some contexts. Perhaps you prefer a bit more romance in your triodes?
"You don't need to be a Weatherman to know which way the wind blows"
If we knew what kind of sound the OP wanted by rolling his 12AX7s, we could make a reasonable recommendation. BTW, I had a Jolida CDP with a tube output stage. The stock Jolida tubes were Chinese 12AX7s very harsh shrill and empty sounding. I tried some really nice 5751s, as you know I would, and they simply didn't work in that circuit. It was the first time I found 5751s didn't function. I still haven't a clue why not . Those very tubes worked quite well elswhere. I then put in some Mullard Mil Spec, I think CV4004s and the sound was dramatically improved, better tonal balance, rich full mid bass, etc. as you might expect from a Mullard. If the OP wants a clean strong signal tube, perhaps a Raytheon or a Tele might be in order, we just don't know.
No we don't know what he wants. If the original TJ tubes sounded good...just get another pair.
What am I looking for? I guess I am looking more detail. When I was looking to replace the stock 12ax7 that came with the cdp there were rave reviews for the TJ Full Music tubes. Words used to describe these tubes were-very high quality,gold pins,quiet,very detailed throughout the frequency spectrum. When I purchased the TJ Full Music 12ax7 I instantly noticed a difference and was pleased with the choice i had made. Now I never hear anything about the tubes by TJ Full Music and there are many positive reviews about the Genalax and Psvane. In their reviews they use similar words. So I was looking for somebody who had used the TJ Full Music and was either still using them or if they replaced them then why and what they replaced them with. They are all at about the same price point.
I understand tubes, like cables, are very system sensitive. Just looking for your thoughts about these 3 tubes.
Thanks
R.E.B.
I prefer a deeper soundstage, better focus, and better imaging.
Jack
"The 5751 is a zippier tube"
Such broad generalizations are just plain wrong. Some can be brighter sounding, just as some 12ax7's are "zippy" sounding. You would have a hard time findind a less zippy sounding tube than the GE TMGP for example. Big, rich, full bass, but zippy? No way.
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