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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Re: 12AT7WA,, CV4024, E2157, E81CC, ECC801S, M8162, 6060, 6201, 6679, 7492, 7728, A2900, B152, B309, - - and more ! posted by Rivieraranch on March 17, 2007 at 06:18:43:
Riviearanch,As I consider my NOS tube collecting to be more or less "finished", I realise I've probably focussed disproportionately on the 12AT7- I have 80 NOS to fill 8 sockets, but it's a tube that has surprising sonic influence in the gear I have that use it.
With the Mullards, I should have been more specific, it's the mid-late 80's KQDD- the very last runs that I find to be unsatisfying- a little hard. They're not terrible by any measure, but my attitude is that they are often overpriced only because of the Mullard name and sellers try to confuse buyers by suggesting these are sonically the equal of the earlier ones. For the prices these command today- I've seen sellers try to get $30-40, one can find much, much better 12AT7s and that's why I recommend avoiding them. It's interesting to me that as time goes on, the line between the really seldom seen and great old production tubes and the late, far from spectacular is being blurred.
The 80's JAN Philips is again from the end of old production. My microphone preamp (6-12AX7, 2-12AT7) came with a pair of Philips ECG (blue green print) 12AT7s- these may be the identical construction to your friend's JANs and these tubes are probably the worst tubes I've ever heard- hard, tizzy, dark, and dry. It's odd these came up as only yesterday when repacking some tubes, I found these Philips and I really thought I'd tossed them in the bin five years ago!
The 1956 triple mica Sylvanias you mention are likely to be the exact ones I mean. These have the gold print. I have also some JHS labelled with a light green print. The first pair of these I bought were in 1958 Air Force boxes and this tube in the right place is just amazing. I would encourage you to try these in your Jolida before acquiring more. In the meantime, if you want to hear something of the range of the 12AT7, consider trying triple mica Siemens E81CC which will help reveal what the fast, punchy approach does in your amplifier. Then, for the middle ground, the early 60's Philips, Hamburg 6201 is a great all rounder- just fantastic sense of space, natural timbre, and detail.
I would enjoy hearing what your experiments tell you!
Cheers,
Bambi B
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Follow Ups
- Re: 12AT7WA,, CV4024, E2157, E81CC, ECC801S, M8162, 6060, 6201, 6679, 7492, 7728, A2900, B152, B309, - - and more ! - Bambi B 09:08:22 03/17/07 (1)
- Re: 12AT7WA,, CV4024, E2157, E81CC, ECC801S, M8162, 6060, 6201, 6679, 7492, 7728, A2900, B152, B309, - - and more ! - Rivieraranch 13:47:26 03/17/07 (0)
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