Modwright LS36.5 tubes

I think the general recommendation is the Mullard 5AR4 for the rectifier tube and the 6H30DR as the input tubes. If you can't afford the 6H30DR tubes, I think the Electro-Harmonix 6H30 is preferable to the Sovtek 6H30.

There's a whole thread on tube rolling in Modwright's AudioCircle forum.

http://www.audiocircle.com/index.php?topic=56330.5

Thank you. I'll check that out

Dirk

I have really liked my 36.5...I chose it over a number of well known units. Agree on the Mullard 5AR4. I have been pleased with just it in the unit with the stock 6H30s.

There is not a big difference between the Sovtek and the Electro-Harmonix. The Electro-Harmonix is ever so slightly smoother and sweeter than the Sovtek, but the difference was negligible in the Dodd Buffer Preamp that I had in my system for a little while. The Dodd is very, very transparent, and if the difference with the Dodd was so small, I can imagine that with the Modwright you would have a similar outcome.

Both the Sovtek and EH 6H30 are quite good, so my opinion is aligned with Teeshot's regarding the stock 6H30, which is almost certainly a Sovtek.

Having said that:

http://www.audiocircle.com/index.php?topic=64924.0

I agree with the general sentiment expressed on the thread that the Reflektor 6H30-DR tubes are a significant step up over the lesser Sovtek and EH tubes, but they are also at least 3x the price. It looks like PartsConnexion sells them for about $100 each. Do a search for 6H30 on the PartsConnexion site and you should see them listed. I think you can get matched pairs too for a bit more money.

Viktor at BAT is on record saying the new 6H30-DR's are not in the same league as the old ones. Like most other tubes.