ever heard of RH valves?

a quick google didnt give me any results.

I ordered some Ecc82's for my Basie pre-amp (http://www.diyhifisupply.com/diyhs_basie.htm) from CVC.

I've been having problems with microphony, and have tried about 3 different sets so far, all tested reputable makes.

The Ecc82's are apparently from a german company called 'RH'. CVC test them and these got their premium grade for microphonics. I especially like buying valves from CVC, because they run a good series of tests and measurement. Not a duff one yet.

A worrying moment on switch on - they glowed very brightly for a few seconds ... 'oh-oh' Im thinking.. but then, fine. They do this every time the pre-amp turns on (?) thats a new one on me. Still slightly worried by it.. ever had that?

Well, absolutely NO microphonics, even when you tap the amp near the valve bass plate.

only 7.50 a pop plus p&p too.

So very satisfied from a microphonic and sound standpoint, but worried about the x-mas tree glow on switch-on.

hmm

 

I've seen other tubes do it before, I think its just inrush or something. Wouldn't worry about it too much.

 

Chris....

















































































BANG!

 

Im sitting downstairs waiting for that very noise!!

 

When the wiring in the valve is made, sometimes a few stray shards are left. It is these which are glowing on switch on. Nothing to worry about, and it will diminish in time.