Originally Posted by irishsammy
I know in the case of the A1, I turned it from a 3 to a 5-6 on the Tubey Scale (1 being complete syrup and 10 being ice cold) just by replacing the Raytheon 6AK5's it came with stock with some Telefunken diamond-bottom 6AK5's I bought for a song ($40/pr if memory serves) on Tube World. The Telefunks and Siemens tubes have a reputation for being a little more on the crisp side and in my case, that definitely turned out to be true.
I shudder to think what the MDs might sound like with the A1 with the Raytheons back in there but I'm sure I'll give it a try at some point. I love the tube sound - I don't own a single piece of all-SS gear in any of my speaker or headphone rigs - but there are times when syrupy just won't do, i.e. with the MDs.
Yeah I know what you are talking about. I made a tube rolling thread for the project ember trying about 16 of my dad's tubes (he owns tube amps for his speakers). The telefunken 12AT7 which I am using now had the crispest sound, and the most detail. However I did like the 12AX7 Amperex Bugle Boy from Holland the best, but I cant keep that one lol. It matched the details of the Telefunken but traded in its crispness for a lush airy smooth sound that could not be beat by any of the other tubes. Though I question if the MDs would have excelled as well with the bugle boy. The ADs are much flatter and less dark imo than the MDs, so a bit of warmth did not hurt it (granted I do not think that tube was that warm, it just had some of the warm advantages to it).
I definitely will never be using the stock 6N1P gold grid tube with my amp again. That tube was pretty much a place holder to test the amp to see if it works. It was in my amp for about 15 min. Otherwise there was only 1 tube I disliked more. It had horrible details, sound staging, and was incredibly warm and muddy.
The tube I would be really curious about was the Sylvania 12AT7 Triple Mica. It had a musicality to it, and the best treble out of all the tubes. It did have reduced bass and mids. I question if it would have balanced the MDs more from its dark toneness. The thing I always hated about the MDs was its treble was always kind of poor to my ears, unlike the ADs which do not have a single weakness per se, but never really excel at any one thing. Which gives it a really balanced sound that I love.
Edited by gamefreak054 - 1/30/14 at 12:37pm