dynaco PCB 6h30

Ok I'm going to have to be the one in the room to ask - WHY would you need to use this tube over the other boards that already have tweaked the crap out of equally as good driver tubes?

The 6h30 has recently become the darling preamp tube simply because it's found in a few high end premaps. Right now hype is your enemy. It is a good tube but as all things electronic - it's all circuit dependent. And I'm not talking simply about the driver board.

My favorite is the VTA board that uses the 12BH7. Then 12ax,at,au

Side note: Since Reflecktor the original company that sold them sold out, it seems everyone is having a darn hard time getting a 6h30 of equal sound quality. Just sounds like you will be chasing your tail. go for a good 12BH7 on the VTA board.

RE: dynaco PCB 6h30, posted on January 19, 2017 at 15:00:55
mrdavis842 Audiophile Posts: 274 Joined: February 22, 2013	I have never seen one. Mine uses EF86's, if I did another one I would probably go with 6922/6DJ8. The 12AU7 and 12BH7 wouldn't be a bad choice either.

RE: dynaco PCB 6h30, posted on January 19, 2017 at 17:44:11

airtime
Audiophile

Posts: 11287
Location: Arizona
Joined: February 4, 2003

I'm using the VTA board with 12BH7 and I prefer it over even a good 12AU7. A more focused sound and better balanced FR over the AU7.

The 6h30 could be done but it would take A LOT !!! of tweaking to make it work.

RE: dynaco PCB 6h30, posted on January 20, 2017 at 08:45:32

mrdavis842
Audiophile

Posts: 274
Joined: February 22, 2013

I used to read the threads/posts on diytube.com for the st70 topic under amplifiers. Shannon Parks board might work if you can find one on eBay or somewhere else. Take a look at Uncle Ned's post (10 post down) in the linked thread below.

Availability thread: http://www.diytube.com/phpBB2/viewtopic.php?f=6&t=6894

Here's an idea: stick a filament jumper in there so 6CG7 or

RE: dynaco PCB 6h30, posted on January 20, 2017 at 16:30:05
bare Audiophile Posts: 1879 Joined: April 14, 2009	Unlikely a popular view :-) Bought my ST70 New 'back when' Modded the hell out of it. Expensively actually... grrr. IMO it's a crappy amp.. upgradable to Mediocre with the application of Lotsa $$. Limited not only by it's design but by it's Iron. Move along to something else. It really won't hurt. Your Phantasy / Your $$ .. just saying what I learned :-)

Amp/Preamp Asylum

dynaco PCB 6h30

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