I love it when a plan comes together...!
Ok, I sat down tonight and ran the amp with the new tubes through the gamut. Starting with the clean channel: As before the clean is, well clean. It's clear and articulate as before, only now the bass is fuller and there's some power tube growl at higher volumes. Very nice. Clean, warm jazzy and bluesy tones come through now, with great single note definition. Switching to the class A 15 watt mode, there is now a noticable difference. There's more snap to the tone when I dug in with a strong pick attack, while the notes had a warmer rounder tone when played with a metered pace. In both modes the EQ is now more responsive. There are plenty of tones yet to be found as I didn't explore them all...yet.
On to the OD channel: Well hello, there really is an OD channel in this amp that doesn't sound like a raunchy, clipping diode solid state circuit! Suddenly there is clearly defined bass. Not just the full, deep, rounded kind, but the harder, slap kind of bass as well. You just have to dial in what you want. The thing I like about this new bass response is that it's not the least bit boomy or mushy. It is sharp, clear and punchy. Pretty cool.
After running through some of the owners manual suggested settings, I started experimenting with some of my own. My Strats will go from crisp clear, shimmering and glassy tones to really edgy OD bite. And the icepick is gone! My ears no longer feel like they've been flossed with razor wire. Every switch position on the Strats is usable...I just had to find the right EQ setting to maximize the tone. The horrible ghost tones have been reduced to a normal Strat kind of warbling sound (in high gain mode, that is). The sustain this amp now delivers make lead runs smooth and buttery. I found myself playing with a lighter touch as notes seemed to float out of the amp. When I switched to my Agile LP with the Highorders in it, a smile spread accross my face like a Chessire cat. Crisp, biting lead tones seemed to leap from the fingerboard. This guitar and these pickups never sounded this good in any of my other amps. Everything from Allman Brothers to AC/DC tones were there. Even hints of that hollow Jimmy Paige sound was there, although I didn't take the time to try to dial it in further.
It is a common notion that a rectifier tube has no bearing on an amps tone. While this is true, it has a profound effect on the sag, which in turn affects the note definition and overall shape of the tone. In this regard, the NOS Philips 5AR4 rectifier tube I put in this amp was so much better than the stock Sovtek as to make it seem that I went from a solid state rectifier to tube. There is that much of a difference.
While the speakers still have a while yet 'til they break in, at least now I can tell that they will be fine for this amp, They seem to handle all the different amp settings I tried with equal aplomb. Good job Eminence!
I did just a little tweaking with the pre-amp tubes and I'm not done yet. I changed the tubes to the RCA in V-1, a GE 5751 in V-2, the BEL in V-3, and GE 12AX7WA's in V-4, and V-5. That smoothed out the pre-amp OD a bit. I want to pick up a couple more Tung-Sol 12AX7 reissues to try out as well.
Well, with ringing ears, I'm happily off to bed for the evening. I can't wait to spend some more time with my new little jewel.
