I saw in my latest mailer from Guitar Center, they are selling the Epiphone Valve Jr. head for $84. I also know there are modification kits out there for them. One such kit is by BitMo that converts the amp into a sweet tonal monster. The basics of the amp are really simple. 5w tube head with a single 12AX7 preamp tube and a single EL84 power tube. Only one control, volume knob...
The BitMo EVJ Trio kit converts it into this.
6 voicings and gain settings - Switch between all the Tweaky voices
Duo Control - Famous BitMo Tone Control w/ Fat Boost switch
3-Way Voicing/Gain Switch - LOW, MO’ and WHOA!
"Blackface", "British" and "Over the Top Boost" voicings
from this:

to this:

So I'm crossing my fingers this works. According the website, should only take a couple hours. We'll see!