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Substitute for 6gw8 in Heathkit aa-32
Substitute for 6gw8 in Heathkit aa-32
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Old 22nd May 2007, 06:40 PM   #1
oldheathkitphil is offline oldheathkitphil  United States
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Question Substitute for 6gw8 in Heathkit aa-32

Would anybody know if there is a substitute for the 6gw8 ?
I was given a Heathkit Stereo aa-32 amplifier which uses the 6gw8 in a push pull output.

I find some threads that say that the 6bm8 can be used if the socket is rewired, which I am capable of doing.

Would appreciate any help possible.

thank you

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Old 22nd May 2007, 06:59 PM   #2
Tom Bavis is offline Tom Bavis
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At $9.00 new / 4.50 used, I'd just buy a few... try findatube.com

Or add a 6V transformer in series with the heaters and get some 14GW8s...

They really should be matched though, especially if this amp uses one common cathode resistor like many lower-end amps...
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Old 22nd May 2007, 11:09 PM   #3
kevinkr is offline kevinkr  United States
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Substitute for 6gw8 in Heathkit aa-32
The 6GW8 is the same as the European ECL86 and is quite readily available. Cost is very variable depending on who made them.
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
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Old 22nd May 2007, 11:20 PM   #4
gingertube is offline gingertube  Australia
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Worth chasing up old stock tubes. The 6GW8 is a seriously lovely sounding tube. It is the best of all of those triode/pentode combinations, a lot better than 6BM8 in my opinion. Now - if only we can convince someone to start making them again.
I've put 12 off them into my stock to make sure my 6GW8 amps outlast me.
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