Radial Engineering Reamp JCR Passive Reamper - John Cuniberti's Original Design
The Radial Reamp JCR is a high-performance passive reamper that lets you take a pre-recorded track and send it through guitar amps, bass rigs, or pedal chains without noise or distortion. Developed with recording legend John Cuniberti, it uses a custom-wound USA-made transformer to preserve every detail of the original signal while optimizing it for amplification. Ideal for experimenting with tones during mixdown, the JCR delivers natural, phase-accurate reamping with a smooth Bessel curve, making it a studio essential for producers seeking vintage textures from dry tracks.
Original Reamp Circuit
The JCR's passive circuit, faithful to Cuniberti's patented design, unbalances the signal and shifts impedance for seamless amp feeding. It handles pro line levels (+4 dBu) to instrument level, with ruler-flat response and minimal phase shift, allowing for creative tone sculpting without artifact or hum.
Key Features of the Radial Reamp JCR
- Passive reamper with custom USA-made transformer
- Original John Cuniberti Reamp circuit for phase-accurate tone
- Handles pro line levels to instrument signals
- Smooth Bessel curve for natural response
- No power required, eliminates ground loops
- Level control for amp optimization
- Mute switch for silent switching
- High-cut/low-cut filters for tone shaping
- Rugged steel housing for studio durability
- 3-year transferable warranty
Technical Specifications
- Type: Passive reamper
- Input: XLR balanced (+4 dBu line level)
- Output: 1/4" TS hi-Z instrument
- Frequency Response: 20 Hz–20 kHz (±1 dB)
- Transformer: Custom-wound USA-made
- Power: None (passive)
- Dimensions: 5 x 3.3 x 1.8 in (127 x 84 x 46 mm)
- Weight: 1.55 lbs (0.7 kg)
- Warranty: 3-year transferable



