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MF MD HG01 Electric Guitar Month 06-19-18

Krank Rev Jr Standard 20W Tube Guitar Amp Head

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Product 489719
Product Price $0.00
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The Rev Jr. amp head boasts an all tube dual channel head (two 5881s, three 12AX7s) with boost switch and a tube-driven active effects loop that give...Click To Read More About This Product

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All-tube circuitry for signature Krank gain.

The Rev Jr. amp head boasts an all tube dual channel head (two 5881s, three 12AX7s) with boost switch and a tube-driven active effects loop that gives even the most discerning tube amp enthusiasts an array of tones ranging from clean to high gain.

Krank Amplifiers have been a driving force in the popularization of lower wattage micro stacks with the introduction of 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.

Check the drop-down menu to the right to select colors and/or other options.

  • 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

Krank your setup — order this amp head today.


Review Snapshot

by PowerReviews
KrankRev Jr Standard 20W Tube Guitar Amp Head

(based on 3 reviews)

Ratings Distribution

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  • 4 Stars



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  • 1 Stars



Reviewed by 3 customers

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(2 of 4 customers found this review helpful)


decent practice amp

By georgios lukai

from PA

Comments about Krank Rev Jr Standard 20W Tube Guitar Amp Head:

this amp is great for home practiceit has great gain with gain turned up and the boost and effects loop fully activatedits volume is pretty limited, especially outside of a small room: its just loud enough to match a drummerfor the price, i expected morei've never actually played the revolution or the krankenstein, so i cant recommend saving up for eitheralso, the features are lacking, especially no footswitch, and the clean channel volume knob is the same as the dirty channel gain, another annoying feature

(2 of 2 customers found this review helpful)


Metal to the Max

By Clutch Powers

from Campbell RIver BC

Comments about Krank Rev Jr Standard 20W Tube Guitar Amp Head:

I am a home recording dude and I have been looking for an amp that has a great enough amount of gain to not have to boost the front end. Well this is it, and for a fairly low amount of money too! The Kleen channel is very usable too, especially with the boost on. I personally like a kleen tone with a bit of grit. Sure this channel is not foot-switchable, but if your playing live with it, just roll your volume off on your guitar.The Krank channel is where its at. I just leave the boost on and the FX level on max and engaged all the time to get the most out of the gain. What I really find amazing though, is the sweep. If you leave all the eq's at noon, then set your sweep sound THEN adjust your eq, there seems to be no bad setting! Amazing!So if your looking for a great at home metal amp that won't kill your pocket book, try this amp. I am so happy I did!

(1 of 3 customers found this review helpful)


Loud little thing

By Timmeh!

from Fort Worth, TX

About Me Experienced

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  • Easy To Use
  • Excellent Sound
  • Good Warmth
  • Portable
  • Powerful


  • Limited Functions
  • Low Volume Tone
  • No Clean Mid Eq
  • No standby switch

Best Uses

  • Amateur Recording
  • Events
  • Home Studio
  • Performances
  • Professional Recording

Comments about Krank Rev Jr Standard 20W Tube Guitar Amp Head:

This little amp is surprisingly loud. One slow turn of the volume knob will have you saying "Wow, it's only on 2??" With the presence and sweep knobs, you can get any style of tone you desire. I did not realize that the clean channel did not have a Mid EQ until after I ordered this amp, which made me very nervous while I waited for it to arrive....however the clean tone on this amp is fantastic. It's soft and very warm and was really a pleasant surprise. It does not have a standby switch which also made me nervous, but the amp warms up and the tone kicks in after about 10 seconds. It was recommended to me to turn the volume all the way down before turning it on or off, and to let the tubes get warm before you crank it up loud. My only true complaint about this amp is that it has to be up to at least 1 to get to the amp's true tone, which 1 is very loud on this amp if you are practicing at home. All in all, the amp is very easy to use, easily portable, has a great tone variety and packs a powerful punch.

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