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Old 4th January 2006, 04:20 AM   #1
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Lightbulb 12ax7wa

Are 12AX7WA Valves good for using in Pre-Amps?
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Old 4th January 2006, 05:23 AM   #2
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Sovtek 12AX7WA?
What 'kind' of pre-amp?
IMO, dark sounding somewhat and slightly lower gain than most NOS 12AX7A's. Fairly quiet. I've used them in my VTL Ultimate clone and have used better and worse. I guess it would depend on how and where you used them. All of the WB's I've used (4) popped loudly on various occasions.

Wayne
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Old 4th January 2006, 08:42 PM   #3
SHiFTY is offline SHiFTY  New Zealand
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I'm a NOS snob- tubes from the 1960s are the only way to true enlightenment.
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Old 4th January 2006, 09:35 PM   #4
anatech is offline anatech  Canada
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12AX7EH sound like NOS in my gear.

Something to try anyway since the price is reasonable.

-Chris
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Old 4th January 2006, 10:17 PM   #5
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I personally haven't tried them because everything I have read about their sound is bad . They are reputed to be fairly reliable and long lasting. I really like the EHs and I have a mono amp with NOS RCAs that sound great too. Telefunken NOS are supposedly the best sounding but cost like $50.00 per
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Old 4th January 2006, 10:47 PM   #6
anatech is offline anatech  Canada
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Hi Steve,
I refuse to pay $50.00 for a signal tube!

They are modeled after the RCA's. I do have many old and NOS tubes to compare. I can't see anything wrong with Electroharmonix in comparison. Worth a try some year.

Add to that, they are quiet and not generally microphonic.

-Chris
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Old 5th January 2006, 01:53 AM   #7
kopite is offline kopite  New Zealand
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The JJ ECC83/ECC803S are excellent and a good price.

For a pre I would not consider it, gain is 100 and needs a high voltage say 280 or more to get it linear. The bias is only about 1.5v also.

My 2 cents worth.

Phil.
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Old 5th January 2006, 03:06 AM   #8
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Thanks For Helping
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Old 5th January 2006, 09:52 AM   #9
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@Valve

Your welcome! I might add I only tried them because they were on sale at the time, buy one get one free deal. I like the WB version better for Hi-Fi, they sound better. A little punchier, better low end (higher gain) but for the popping... I haven't bought any since. If you can't afford some of the boutique toobs try the JJ's, Electro-Harmonix (EH), Sovtek 12AX7S (spiral filament), Ei's (Yugo's) good sounding if you can find one(s) that aren't microphonic. Ei gold pins... don't know if that helps any!
Right now I'm using a pair of gray plate (short) RCA's circa late 1950's. They were salvaged from an EICO ST40S. Unfortunately one of the pair throws fits of spewing out noise occasionally.

Wayne
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Old 5th January 2006, 10:03 AM   #10
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Lightbulb Thanks Again

Thanks Again, I Might see if i can track down one of those tubes
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