Radial Engineering Reamp JCR Studio Reamper

Radial Engineering
Radial Engineering Reamp JCR Studio Reamper
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Expected availability: 7-14 business days
$37/mo. suggested payments
with 6 Mos. Promo Financing* 

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Radial Engineering R800 1030 Overview

  • 1Description
  • 2Highlights
  • 3Connections
  • 4Control Knobs and Buttons
  • 5Construction and Design

The Radial Engineering Reamp JCR is a passive reamper that allows you to take a prerecorded track and send it back to a guitar or bass amplifier and re-record it. The benefits are tremendous: instead of worrying about the sound of the track, you can focus your attention on getting the best musical performance. Once the performance has been captured, you can reamp the track even in the absence of the guitarist by moving the mics around the room, trying various amplifiers, or introducing effects. Additionally, you can also reamp the track later as the production develops.

This reamper features the original reamp circuit designed by John Cuniberti. It features a 100% passive design with John's original custom-wound transformer and circuit that are made in the USA. It also features separate XLR and 1/4" TRS input connectors, variable output level, and a 3-position filter that lets you tame excessive highs, warm up the lows, or simply bypass if you want to revert to the original circuit. An on-board mute function has also been added to let you shut off the signal going to the amps while making adjustments or moving mics around the studio.


Lets you re-record tracks through a guitar or bass amp
Original reamp circuit designed by John Cuniberti
Easy-to-use, plug-and-play passive design
Improves productivity while expanding creative options


XLR Input

Balanced input
Connects from the output of your recording system to the Reamp JCR

1/4" TRS Input

Connects from your recording workstation and is suitable for both lo-Z and hi-Z sources
Wired in parallel with the XLR input

1/4" Output

Unbalanced instrument level output
Connects from the Reamp JCR to amps and effects
Transformer isolated to eliminate hum and buzz caused by ground loops

Control Knobs and Buttons


Silences the 1/4" output from the Reamp JCR going to the guitar or bass amplifier


Used to control the signal going from the Reamp JCR to the guitar or bass amplifier
Sets the reamping output level to your amp


Three-position switch used to select between preset EQ filter
Low-pass (high-cut) setting to warm overly bright amps
High-pass (low-cut) setting to clean up low end mud
Flat setting to bypass the filters and go back to the original reamp circuit

Ground Lift

Disconnects ground at the balanced inputs to eliminate hum and buzz caused by ground loops

180° Phase Invert

Flips the electrical polarity of the output to compensate for amps or effects that invert the signal

Construction and Design

Steel Construction

Heavy-duty 14-gauge steel construction for added durability and extra shielding against electromagnetic fields

Mil-Spec Circuit Board

Double-sided PCB and full ground plane to assure low noise and high durability for trouble-free performance

Book-End Design

Creates protective zone around connectors, switches, and potentiometers for added protection

Push Switches

Feature durable metal outer casing
Rated at over 20,000 cycles


Isolates and converts the impedance to properly feed the guitar amp
Custom made in USA

No Slip Pad

Full bottom surface neoprene pad provides electrical isolation and mechanical insulation
Keeps the JCR Reamp from moving around when placed on the guitar amp

Baked Enamel Finish

Keeps your JCR Reamp looking great for years
UPC: 676101040315

Radial Engineering R800 1030 Specs

Circuit TypePassive, transformer isolated
Frequency Response20 Hz to 20 kHz (±0.2 dB)
CMRR-55 dB @ 55 Hz
Dynamic Range140 dB
Noise Floor-115 dBu
Maximum Input Level+21 dBu @ 20 Hz
Output LevelAdjustable
Total Harmonic Distortion0.05% @ 20 Hz, 0.006% @ 1 kHz
Intermodulation Distortion0.0025% @ 1 kHz/-10 dB input
Deviation from Linear Phase2º @ 100 Hz; 0º @ 800 Hz
Input Impedance600 Ω
Output Impedance5 kΩ
InputXLR, 4 dB balanced line-level, AES standard (pin-2 hot)
OutputInstrument-level (variable), unbalanced
Ground LiftDisconnects pin-1 at the XLR input
MuteMutes the output at the 1/4" unbalanced out
FilterHi-Cut: -3 dB down @ 1 kHz
Low-Cut: -3 dB down @ 180 Hz
Polarity180º polarity reverse at 1/4" output
PowerPassive, no power required
Construction14 gauge steel chassis & outer shell, baked enamel finish
Operating Conditions41 to 104°F (5 to 40°C), for use in dry locations
Dimensions3.3 x 5.0 x 1.9" (8.4 x 12.7 x 4.9 cm)
Weight1.75 lb (0.79 kg)
Packaging Info
Package Weight1.8 lb
Box Dimensions (LxWxH)6.25 x 4.15 x 2.95"
See any errors on this page? Let us know


Regarding the below, could you please explain to ...

Regarding the below, could you please explain to me, a novice, what it means to be "wired in parallel with the XLR input." 1/4" TRS Input. Connects from your recording workstation and is suitable for both lo-Z and hi-Z sources. Wired in parallel with the XLR input.
Asked by: Christian
The parallel wiring means the 1/4" TRS input and the XLR input are wired so they are independent of each other and each have their own signal path.
Answered by: Lisa
Date published: 2021-10-07
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