So I purchased the Blues Junior knowing it was pretty much the perfect practice/home amp in the sub $500 range for the classic American tone. After spending some time with it and stumbling through the intraweb onto BillM's website (http://billmaudio.com/wp/) I decided to start modding the amp. I have a long history of modding PC's (even directly soldering on motherboards and video cards ) so I knew this would be a piece of cake with how simple the Blues Jr. is. I started with some basic BillM mods, in the end this was the list of mods I had purchased/installed from BillM: Basic Cream Kit, Sparkle and Presence Mods, Switchcraft Input Jack, Switchcraft Line Out Jack and Standby Switch). After installing all of those mods I was very satisfied with what I had in terms of overall tone and the amount of tonal possibilities with all the mods. The only thing still lacking was the bass response from the stock speaker. However my addiction to great sound and soldering/tweaking kept the modding alive in the form of purchasing a BYOC E.S.V. 2-Knob Bender for those classic Zeppelin like distortion tones: After a few weeks went by I decided that I wanted to make the "ultimate" Blues Junior and I had already laid the ground work with the BillM mods listed above so I started researching NOS tubes. Many NOS articles later I decided to jump on two matched NOS GE EL84's (these were both tested on a calibrated Hickok 6000A and the results were 7500 and 6800 microOhms). After installing these I was blown away by the difference in the overall tone, finally I had that glassy EL84 tone that I had been missing (this may have also had to do with where I ended up biasing the amp at) and even the bass thanked me. Then I wanted more clean headroom so I started reading about the affects of placing a 12AY7 in the V1 slot. So I started reading about the top NOS 12AY7's and I decided on a Sylvania 12AY7 w/ round "getter gray plates" (tested on a Hickock 752A, results being Triode 1 = 2000 microOhms / Triode 2 = 2000 microOhms (perfectly balanced)). The 12AY7 made me almost as happy as the EL84s did, I had so much more headroom before break up. However if I wanted breakup it was all there (I just had to raise the volume more), especially if I turned on my E.S.V. 2 Knob Bender. Well I felt I might as well fill out the rest of the amp with NOS USA tubes as well so I installed a very nice GE USAF 5751 (12AX7) into the V2 slot and put another NOS GE 12AX7 w/ "U Getter Grey Plates" (tested 52/54 on Hickock TV-7D/U) into V3. Obviously I was still missing one thing, the speaker upgrade that I had saved for last until I had everything else how I wanted it. I read through many guides and decided to splurge on the Celestion G12H for it's notorious classic American tone (I'm sure I don't need to go into details on why I chose this speaker ). Well enough talking here are the rest of the pictures: And the part I haven't mentioned yet is my Schecter Tempest Custom and my pedals: (yes I used to own a Super-Champ X2 ) Here are my pedals before I got the E.S.V. 2 Knob Bender and replaced the Digitech CM-2 (anyone want to buy? ) and I am also running a Visual Sound Custom Shop Pure Tone Buffer in the chain right after the Bender (which is first in the chain). That is a Dunlop Crybaby Classic (w/ the Fasel Inductor and "true bypass") and I am running Planet Waves American Stage cables. In the end this Blues Jr. blows my mind every time I plug into it and I have heard a lot of amps (worked on stage crew multiple times for festivals in NC). For a home practice amp or even a mid volume level gig amp, this thing sings and you would have to pry it from my dead fingers now. I can't believe the transformation this thing has gone through from bone stock to now (I voided the warranty after owning it for less than 2 weeks ) Opinions on any of my upgrades or overall?