Radial ProRMP 1-channel Passive Re-Amping Device

Passive Re-amping Device with Custom Transformers
Radial ProRMP 1-channel Passive Re-Amping Device image 1
Radial ProRMP 1-channel Passive Re-Amping Device image 1
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Radial ProRMP 1-channel Passive Re-Amping Device
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Re-amp your tracks with Radial!

The Radial ProRMP is a passive box that allows for re-amping of the signal. Re-amping has been the 'secret weapon' for countless recordings by the biggest names in the business and the process is often used on guitars, bass, keyboards, percussion and even voice to create new textures! The ProRMP is a 100% passive re-amplifier that lets you to take a pre-recorded track and re-amplify it through a guitar amp or effects pedals to create new and exciting tones. Dive into the creative possibilities of re-amping with the ProRMP.

Radial ProRMP at a Glance:
  • Easy to use
  • Custom-wound transformer
  • Built tough
  • In use

Easy to use
Plug and play easy to use, the ProRMP connects from the recorder to your amp and effects units and does all the impedance matching for you. Just adjust the level to suit!

Custom-wound transformer
The magic behind the ProRMP's great tone is a custom wound transformer that at once converts the balanced low-z source to a hi-z input for your amp while also acting as an electrical isolator to eliminate troublesome ground loops that can often cause buzz and hum in the sound.

Built tough
Like all Radial products, the ProRMP is built tough! Encased in a 14-gauge steel, the ProRMP employs a unique book-end design with a welded I-beam frame that protects it from damage and assures the PC board and solder points will not be stressed, adding durability. A full-bottom no-slip pad works double duty by providing plenty of stay put while also eliminating electrical contact points from guitar amp chassis bolts that could cause ground loops.

In use
Plug a standard balanced cable from your recorder or mixer output to the ProRMP's XLR input. Connect the 1/4" ProRMP output to your instrument amp. Adjust the ProRMP's output level control as required to match the amp input and engage the ground lift switch to eliminate any hum and buzz caused by ground loops.

  • Electric guitars
  • Bass guitars
  • Keyboards
  • Electric violin
  • Voice
  • Percussion
Radial ProRMP Features:
  • Play prerecorded tracks through amps and pedals
  • Opens the door to creative new tones and textures
  • Eliminates repetitive playing during recording
  • On board level control for fine tuning the gain
  • Transformer isolated to eliminate buzz and hum
  • Built from 14-gauge steel
  • No-slip bottom
  • 100% passive

Radial ProRMP - Affordable and high-quality re-amping!

Additional Media

Using Pedals for Signal Processing in the Studio

Tech Specs

Type Passive DI
Channels 1
Inputs 1 x XLR
Outputs 1 x 1/4"
Height 1.75"
Width 2.75"
Depth 4.25"
Weight 1.2 lbs.
Manufacturer Part Number R800 1125

Customer Reviews

Based on 9 reviews
Write your review

Radial rocks and rolls

I'm using a pair of these in the studio, and they do exactly what they're supposed to in exactly the way described by Radial. This simple-looking passive reamper is another really well-built, virtually indestructible piece of magic from Radial. I needed to take line signal from an outboard mixer into a pedals (requiring the ProRPMs), then from the pedals to line inputs (requiring a Radial JDI Stereo). I've become a huge fan of Radial over the past year, especially using their toys in the studio.


I use this to match the aux send from my mixing console to the input on my Fulltone Tape Echo, it works perfect, removes ground loops, great tone, very heavy duty construction and affordable price. Lets me use my favorite echo device on vocals during mixing, highly recommended. Good music to all!
Music background: Pro musician and engineer

Does what it's supposed to do, what more could you want?

Product works very well. Very low noise floor. Solid build quality, high quality parts. No bells and whistles, but keeps cost down. Some more expensive units allow for more coloration or control, but come on we're re-amping. Let the tubes / pedals do that.
Music background: recording / mixing engineer, artist

THE re-amp solution

Extremely durable, looks nice and performs flawlessly. Used it a few times and I love it.
Music background: Musician, Amature recording and mixing engineer

Great for Slaving Guitar Amps with your digital rig.

Before I had this box, I was having a hard time getting the tone I made in the studio (all software based amp sims etc.). I tried to go out of my interface into my amp and I kept getting a loud noise and it was very annoying. Later realized I wasn't doing this correctly, I had to change impedances and I needed a DI going in and a ReAmp box going out. ProRMP was a great inexpensive way to get my studio tone live. Not only does it do it's job, but it does it LOUD. I run this guy into my Effects Loop Return to slave the power amp on my 2x12 combo and it sounds MIGHTY. Best investment ever, hands down.
Music background: Recording Engineer, Session Guitarist, Student
See also: Direct Input Boxes, Radial, Radial Direct Boxes