tube identification

Tubes Asylum

Questions about tubes and gear that glows. FAQ

I bought this amp a couple weeks ago or so and its actually nice shape inclduing the transformers and but the chasis was bent a bit not allowing all the tubes to go in .I took an adapter on my 20 ton press I use when I rebuild automatic transmissions and transfer cases for 4wd and I was able to straighten it out enough to where the amp actually works perfect..I got the original type el37s which one had a broken guide pin,no big deal but it has these two made in gt britain rect gz34s and I know these cant be mullards even if they say that.They say F31 and B8F under that and they have mo hole in the guide pin.Are these the Jap Mullards? Are they anygood as far as durability?It looks like my other gz34 real mullards with the hole as far as the bottle goes but the base looks totally different.Who knows about these?

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Topic - tube identification - Michael Samra 02:40:54 04/12/07 (8)

Re: tube identification - John PA 21:21:58 04/25/07 (0)

Large base Mullard.... - HOK 04:25:42 04/12/07 (6)

Re: Large base Mullard.... - Michael Samra 04:59:56 04/12/07 (5)

Re: Large base Mullard.... - Bill O'Connell 15:03:02 04/12/07 (1)

Re: Large base Mullard.... - Michael Samra 15:57:24 04/12/07 (0)

Re: Large base Mullard.... - Jeff A W 05:39:00 04/12/07 (2)

Re: Large base Mullard.... - Michael Samra 15:54:03 04/12/07 (1)

Re: Large base Mullard.... - Jeff A W 16:33:17 04/12/07 (0)

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