One of the most popular trends has been the rise of lower wattage micro stacks and Krank Amps has lead the way with the Rev Jr., the 20W version of the monster Rev Series 1 head and cabs and the first in the line of the Jr. Series of small amps (50W versions available as a special order item). The Rev Jr. boasts an all tube dual channel head (two 5881’s, three 12AX7’s) with boost switch and tube-driven active effects loop that gives even the most discerning tube amp enthusiasts an array of tones ranging from clean to high gain. The 1×12 cabs, featuring the same solid wood construction and Eminence speakers as the Rev 4×12 and are also capable of handling your favorite higher wattage head for home studio use.
- Two channel 20W head
- Preamp three 12AX7 tubes, power section two Sovtek 5881 tubes
- Volume, gain, 3 band eq, sweep control, push button “boost”, push button channel switch
- Tube-driven active effects loop, 8 and 16 ohm selector, worldwide voltage use
VIDEO:
Coutesy of our Russian distributor, Russian artist Icon In Me:
Our friend Paul Riario at Guitar World:

GEAR USED: Chadwick, Nineteen80, Rev Cab, Nineteen80 cab, Rev 2×12 cab
This 28-year-old Nashville native has over a decade’s worth of...
The online manual does not include information for the Jr. amps. Will these docs also be made available here on the website? Thanks
Hi there!
The first video is SO killer!! I diged it A LOT. I’ve also added this band to myspace. The tone he has there is a dream come true to every home metal guitar player and even more! I’ll definitly pick one up but there’s also the Krankstein Jr. and I’ll need some samples or video to make up my mind. Please guys, hurry up is this issue! :)
Kind regards to all.
BTW: http://www.myspace.com/senhorassimeassado
Hi i have the Rev jr, and i have a question about how the FX loop adds extra gain/volume.
i was wandering how it does this, is the Fx loop a SS circuit, or does it have a dedicated tube for the extra gain/volume?
im just a little curious really, because as i understand it, volume/gain is achieved through the use of the tubes right? if so, that would mean the that when the FX loop is active it uses an extra tube?
or am i completely wrong.
many thanks james
Nope you’re right James, the Rev Jr. has an active tube driven effects loop that dedicates a tube to it where it will give you extra gain boost if activated with nothing int he loop…
hey guys i have one of the original rev jrs my owners manual/sheet sais 25 watts did you change/lower? on the new ones i think i got mine in 2007?
also can i add a 4×12 cab to the line out in the back? to make a 3/4 stack with 2 single cabs and a 4×12 ? can the amp push that many speakers? i think it would look bitchen in chrome the krank rev jr 3/4 stack? 6 speakers eminence legend v 12? thanx Ripper
Hey man basically the amp sits in between 20 and 25 watts and the original owner’s manual was written at 25 but we’ve always considered them to be 20… Now as far as adding a 4×12 the amp will push one pretty well but there’s not enough power there to push a 4×12 and the two 1×12 cabs, not to mention you would get into a ohms mismatch trying to do that which would more greatly affect a smaller wattage amp like the Jr. One thing you could do is slave the preamp of the Jr. using the effects loop send into a bigger individual power amp and then push more cabs effectively that way…
ON MY STANDARD 07 REV JR IS THE LINE OUT ON THE BACK BASICALY A THIRD SPEAKER JACK?
Not quite…it is tapped from the same general place but reacts a little differently. For full tech q’s on the specifics contact the tech department here on the site!