Dodd Preamp Question

I now have NOS Mullards and Siemens CCa (the best of ALL 6922 variants according to many in the know).

I'll try both and report back.

With the stock tubes the Dodd is very good but just occasionally exhibits a bit of treble glare/hardness.

Ok, well, the Siemens are so good I don't know if I'll put the Mullards in. Better all-around. Glare definitely gone. One of those no-doubt, don't-have-to-listen-hard changes.

Heard from few guys about Siemens tubes.
They are very happy using them. I haven't try those yet but I sure will give it a try.

Thanks for sharing your impressions.

Mariusz

I have tried the Siemens, Amperex and Mullards and can report that in my system there is no contest, the Mullards are by far the best sound. They are not at all tubby or bloated or rolled off on either extreme. This is not subtle. Now, all of the tubes are considerably better than the stock tubes. I am getting soundstaging which is magical. I thought the preamp was somewhat thin sounding until this tweak. As with all tube rolling, it will be system dependent. I can also say that Gary Dodd has experieced the same results. Just my 2 cents.

Jeffga,

What Siemens tubes did you try?

The early Siemens '60's CCa is the tube to beat in this pre.