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Radial Engineering Tonebone Plexitube Distortion Pedal  

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2-channel tube distortion pedal combines the natural warmth and harmonic generation of a 12AX7 tube with the control and saturation of Radial's unique multi-stage solid-state drive circuit. This combi... Click To Read More About This Product

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2-channel tube distortion pedal combines the natural warmth and harmonic generation of a 12AX7 tube with the control and saturation of Radial's unique multi-stage solid-state drive circuit. This combination provides incredible gain with tons of overtones and, when combined with their unique passive-interactive EQ, produces four generations of Marshall Plexi tones worthy of a Shakespearian Ode.

Designed to enhance onstage functionality, the Plexitube features two distinct distortion channels for on-the-fly transition between rhythm and lead settings. Channel-1 has been optimized for rhythm with chunk rhythm tones and scooped out mids for a thunderous wall-of-sound and complete world domination. Channel-2 is optimized to produce razor-sharp cut for solos and sustaining mids that are so smooth, they can make a grown man cry. This is augmented with an effects loop that can automatically turn your delay on for leads. No tap dancing!

When the Plexitube is off, true-bypass connectivity ensures the natural tone of your guitar goes directly to your amp without obstruction or a tone robbing load.

Plexitube Setup:
The Plexitube is your 'Plexi-in-a-box'! Just plug the Plexitube output into your amp to open up a world of tube driven British rock tones. The separate trim, drive, contour and EQ controls give you instant command of both rhythm and lead distortion settings as well as a true bypass mode that ensures that nothing gets in the way of your pure guitar-to-amp tone.

But that's just the beginning because you've also got a foot-switchable effects loop at your disposal that's there when you need it and out of your clean signal path when you don't.

You will be amazed at the breadth and scope of the sounds just waiting to be discovered in this truly versatile pedal!

  • 12AX7 equipped tube distortion
  • Clean, rhythm and lead in one pedal
  • Insert loop on lead channel for effects
  • True bypass clean for natural tone
90 day warranty on footswitch and tubes. One year warranty on all other products.

Pro Coverage gives you added warranty protection for your new gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Read More.

Pro Coverage includes
  • Accidental damage protection (new gear only)
  • Expedited repair
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended return period
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to three years from date of purchase
  • Repair authorization-toll-free by phone or via the web
  • Customer Reviews

Review Snapshot

by PowerReviews
Radial EngineeringTonebone Plexitube Distortion Pedal

(based on 14 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 2 Stars



  • 1 Stars



Reviewed by 14 customers

Displaying reviews 1-10

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VH and the 80s metal scene in one box.



About Me Professional Musician


  • Excellent Sound Quality


  • Confusing at first,large and expensive.

Best Uses

  • Turn clean amp into firebreathing Dragon.

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

I have seen this pedals for years but I already having multiple Marshalls,Mesas and other high gainers and enough pedals to open a store. Got one on a trade and when going into 2 Fender Blues Deluxes in stereo the tone is hair raising. Its got that creamy, saturated sound of red hot glowing tubes. Crank VH "Somebody get me a Doctor." The pedal nails that opening 6 chords. I do not use it with the 5150 or the Marshalls. On my clean Fender setup, I can play the clean delay,time effects and with one stomp cover 90% of 80s metal.
For those on a budget, I can highly suggest the Cmatmods Brownie. A/B the 2 they are very close

(8 of 11 customers found this review helpful)


Had it for two years

By Jesse J

from San Antonio, Tx

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

I tweaked it for hours through many of my guitars (Les Paul, Strats, Tele, SG) through a Fender Vibrolux and was always unsatisfied. This thing has a lot of gain, more than I needed. The chords tend to mush up with the gain and I could never EQ it like I wanted even though it offers a lot of knobs and switches. So much crunchy fizz to it. Not the kind of plexi tone I expected. I even rolled off the gain to try to clean it up, but then that just defeats the purpose of the pedal and would just weaken it's sound. I could get away with the tones if I played two strings at a time while power chording or rhythm, but a pedal this expensive... I expected much more. Channel two gets your guitar screaming for a great lead, but it is so noisy it's ridiculous! Who knows, maybe it'll work out for you, but it just wasn't my cup of tea.
It's got a lot of customizing options, and you get a variety of tones.
Is very durable and well built.


Marshall in a box!

By Karl Houseknecht

from Palmyra, VA

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

Pedal delivers Marshall goodness in spades. I have channel 1 set up for a classic rock Marshall crunch that responds to the volume knob just like the real thing. I tweaked the gain for channel 2 for a hard rock Marshall sound akin to what I can get from my JCM2000 TSL100. It just roars, and I love it.I take a point off on features for having the gain for channel 2 in a trim pot, even if it is externally accessible. The problem is, on a crowded pedalboard, you'll never be able to set it, so be sure you have it where you want it before you mount it on a board.The mid voicings are very useful for fine tuning it to your amp. The pedal can do anything from light, compressed, mid-heavy overdrive, to roaring, scooped (in a good way, not in the guitar-store-shred-kiddie way) full-blown distortion. More gain than you'll ever need. It is relatively noiseless, but at higher gain settings some can creep in, naturally, so be sure to have a gate or NR pedal somewhere.This pedal is on an analog board I built with a Full-Drive 2 MOSFET: the perfect compliment. I'm using it for praise & worship and classic/hard rock. Awesome pedal, awesome quality, awesome tone.

(3 of 3 customers found this review helpful)


Should be called "Flexitube"

By El Guitardo

from Hesperia Ca

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

Because it not only gets a great "Marshall plexi" tone, but it can easily get a JTM, JMP, JCM, DSL, JVM, or just about any other Marshall tube amp tone you can think of and not just that, but Fender and Vox tube tones are possible too... Very cool indeed! If you use a "solid state" amp but long for true "tube amp" bone, I believe this pedal will do it for you pal. I gave it 4 stars only, not because of quality or value, but because that sucker ain't cheap! Buy it at any Guitar Center in SoCal and your paying darn near 25 bucks just in tax alone! Man that certainly does suck! But the pedal does not...not by a long shot.

(1 of 2 customers found this review helpful)



By Daniel Brita

from S���o Paulo - Brazil

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

Amazing Sound! I saw my Marshall JTM 45 burning the "air". Thanx Guitar Center and Radial.

(7 of 7 customers found this review helpful)


Great pedal.

By E pluribus unum

from clearwater, florida

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

This pedal can be a bit complicated at first. You have to do bit of tweaking to find a desired tone, but once you get the hang of it you can get all sorts of tones, i.e. megadeth, iron maiden, hendrix, SRV, zeppelin, GNR, ect.. and surprisingly it does them all very well. Unlike the Seymour Duncan twin tube mayhem, you can get a really tight bass out of this thing for those heavy metal riffs. It has more than enough distortion to please any metal head or it can give you that slight tube break up for that old school rich blues sound. It especially works well for anyone that owns a tube amp and would like to get that overdriven tube tone at low volumes. I never tried it with a solid state amp but im sure it would work just fine.

(9 of 9 customers found this review helpful)


If you are looking for Marshall tone you'll get it!

By David Walker

from Rives Junction,Mi

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

I bought this pedal because I was looking for a good distorsion pedal and read a review in some guitar magazine that was very favorable. I also liked the list of guitarist that use Radial products, check them out I'm sure theirs someone you like that uses their stuff. I had a soild state Marshall that when using the dirty channel, just did'nt give me the tone that I needed. I was using this amp for just practice, because my other three amps are tube and are just too loud for practice. It's kinda funny a Marshall amp(soild state) could'nt get me a Marshall tone. This pedal gives me the marshall tone in this soild state amp and my tube amps also, at any volume level. I let a couple friends use it they said the same thing. It can give you that warm sizziling tone of a all tube Marshall. I lot of pedals that I've used before that said that they would give me tube tone just did'nt, go figure, the pedals I used before I found this one did'nt have a tube inside the pedal. This one have a 12xa7 tube, I think thats the key. I would highly recommend this pedal. Radial makes a aby switcher that I'm wanting to get next.

(3 of 3 customers found this review helpful)


Finally, A Pedal That Does The Job

By rude335

from Undisclosed

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

I play through a 65' Twin Reissue because cleans are very prominent in the style of music I play. Unfortunately, so is distortion. I couldn't get the cleans out of Marshalls, so I decided to use a pedal as a means of distortion. I went through EVERYTHING.All the pedals I tried either sounded extremely harsh or really thin.I was fed up with it but decided to take one more shot with the Plexitube. Let me tell you, totally worth it. This pedal is not only the most versatile and full I have ever used, it is also the quietest and does not effect your tone at all. Buy it. It won't disappoint.

(2 of 2 customers found this review helpful)


Amazing Pedal

By CeryBertum

from NY

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

I looked at about 10 different distortion pedals and I was disapointed. They all sounded digital and I have a very big problem with digital sounding pedals. I started looking at a the Tonebone plexitube Hot british distortion and I was amazing with the sound. This pedal is very optional. The Radial distortion can play anything from Stevie Ray to death Metal. I was Very impressed and I would recomand this pedal to anyone that loves realy tube tone.

(4 of 4 customers found this review helpful)


Full Stack Marshall sound at lower volume levels.

By Mike Olenhertz

from Chicago Suburbs

Comments about Radial Engineering Tonebone Plexitube Distortion Pedal:

I'm still learning this pedal; it really changes as you dial around, particularly the Contour option. I have a Hot British and thought this would be like having two of them, but it is its own animal. There's one drive level for both channels, unlike the Trimode. You get to color each channel with the Contour dial; it's kind of a "sweet-spot" finder to my ears. The mid-range switches allow you to get a boosted sound or a scooped sound. This really gets that cranked EL34 sound quite well. I hope this helps....

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