Radial J48 and X Amp ReAmping Kit with Case

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Product Description

The Radial J48 and X Amp ReAmping Kit will give you access to the creative world of Re-Amplification!
Record your guitars or keyboards with the J48 active DI, then send your recorded tracks out through the X Amp to different amps and effects. Radial's ReAmping Kit includes an X Amp and a J48 packed in a protective Zebracase Z12 and 9 Volt power supply.

Click to open XAMP page Radial X AMP
The Radial X Amp is an active re-amper that allows a track from a multi-track recorder to be played through a guitar amplifier (or amplifiers) and re-recorded. Players and engineers can experiment with different combinations of amps and effect pedals long after the original performance has been recorded to build the thickest and chunkiest guitar tracks. The X Amp handles level and impedance conversion with an active Class A circuit which reproduces all the tones and inflections of the original performance. X Amp drives guitar amps as if the player was still plugged into it!

X Amp accepts a balanced +4dB line-level signal and outputs two unbalanced instrument level signals that can connect to effect pedals and amps. To prevent ground loops between the recorder and the amps, the input features a ground lift. X Amp allows simultaneous use of two amps. The second amp output is buffered to prevent signal loss, transformer-isolated to eliminate hum caused by ground loops and features a polarity reverse to align out-of-phase amps. The output level control and clip LED aid in setting levels quickly and saves you many trips back and forth between the mixer and amps. Finally, the X Amp is packaged in an innovative and tough 14 gauge steel welded I-beam enclosure that makes it impossible to torque the PC board.

Radial X Amp Features
  • 100% Class-A circuit yields amazing clarity
  • Overload LED helps monitor input levels
  • Dual outputs drive two amps or pedal chains
  • Polarity reverse corrects phase between amps
  • Out-2 is transformer-isolated to eliminate ground loops
  • Active level control to set perfect levels for your amp
  • Line-level to instrument level conversion
  • Interfaces recording gear with amps & pedals
  • Re-amp your way to fat sounding tracks
  • Use during basic tracks, over-dubs and mixing
Cool Factors
  • Active design reproduces original performance
  • Tweak amp and pedal sound AFTER recording
  • Reduces player fatigue and repetition
  • Amplify acoustic instrument without feedback
  • Run 2 amps without hum or buzz
Re-amping with X Amp is fun and allows engineers to perfect guitar tracks with options not possible during a typical fast ’n furious tracking session. The X Amp makes the re-amping process easy and it’s ultra-high audio quality yields excellent results.

Click to open J48 page Radial J48
The Radial J48 direct box is the world’s finest phantom-powered active DI. It has been optimized to handle extreme transients using only the 5 milliamps of available current from typical 48-Volt phantom power. The J48 features a unique digital switch-mode power supply that steps up the internal rail voltage to an amazing 9-Volts. Most battery-powered guitars and basses are active and will produce as much as 7-Volts when played at maximum volume. Since typical direct boxes are only able to handle about 3 volts, they choke. The trouble is caused when the input signal is greater than the internal rail voltage. This creates all types of distortion: bass sounds thin and lacks punch, guitars sound scratchy and tend to have sporadic peaks, and they lose their natural body resonance.

Radial J48 Features
  • Superior dynamic headroom
  • High input impedance reduces loading
  • Merge switch sums stereo instruments to mono
  • Low-cut filter, -15 dB PAD, and polarity reverse
  • Provides extra reach and air in your sound!
  • Ideal for active acoustic guitars and basses
  • Great for keyboards and drum modules
  • Equally wonderful for live or studio
Cool Stuff
  • Huge 9-Volt internal rail voltage for extra headroom
  • Handles loud transients without choking or clipping
  • No batteries required, works with phantom-power
  • 3 year transferable warranty
Because the J48 has more horse-power (current to work with), it is able to handle these transients without choking. This extra headroom significantly reduces harmonic, phase and inter-modulation distortion. And when you fix all of the problems, a funny thing occurs... you get great sound!

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Helpful Info about the Manufacturer
Phone:  604-942-1001 Warranty:  3 Year Transferrable

Product Specifications

Radial X Amp Specifications
  • Input level: +4dB balanced line level
  • Input impedance: 600 Ohms
  • Output impedance: 5kOhms
  • Output 1: Direct
  • Output 2: Transformer isolated
  • Output Level: Variable
  • Dynamic Range: > 100dB
  • Power Requirement: Custom 15 volt supply
  • Size: 3.5 wide, 2 high, 5.5 inches deep
  • Weight: 1 kg or 2 lbs
  • Warranty: 3 Years
Radial J48 MK2 Direct Box Specifications
  • Dynamic Range: 130dB
  • Signal to Noise: 119dB@100Hz
  • Maximum Input: 10V
  • Frequency Range: 10Hz~40kHz
  • Linearity: 20~20kHz: 0.1dB
  • Phase Coherence:
    • 10º at 20Hz
    • 0º at 1kHz
  • Distortion at 20Hz: < 0.5%
  • Input Impedance: 220kW
  • Output Impedance: 600W
  • Construction: Welded steel
  • Finish: Baked enamel
  • Input connectors: Two 1/4-inch phone
  • Output connectors: XLR male

Customer Reviews

Review: GearZombie Submitted: 9/6/2018

Product Rating5 out of 5 stars.



Perfect Reamp Solution
Product Rating

Product Review

This DI and Reamp box kit is perfect for your reamping needs. I use it all the time and will continue to use it. It has all the options you will need. And as always AMS took care of my order perfectly!

Review: drumex from Texas, Submitted: 5/12/2010

Product Rating4 out of 5 stars.


Excellent set of tools

Multiple outputs from the xamp is a cool creative touch.

Sound coming from the j48 and the xamp are pristine and give you a true representation of whatever you put in.


Manuals & Docs

X Amp Manual174 KB
J48 Manual323 KB