J+4 Specifications

The Radial J+4 is a stereo preamplifier designed to boost unbalanced instruments and consumer level signals and bring them up to a professional +4dB balanced line level. Careful attention has been paid to delivering quality audio while incorporating transformer isolation for added noise suppression. The J+4 delivers a performance that is as good or better than devices costing many times more.

Audio circuit type: Active -10dB ~ +4dB line converter, transformer isolated
Number of channels: 2
Frequency response: 20Hz ~ 20KHz (± 2dB)
Dynamic range: 102dB
Total harmonic distortion: 0.004% @ 1kHz, +10dBu output
Phase Deviation: 0.5° @ 100Hz; 4° @ 20Hz
Input Impedance: 10k Ohms, unbalanced
Output Impedance: 1.6k Ohms, balanced
Maximum Input: +17dBu @ 1kHz, 1% THD+N
Maximum Output: +15dBu @ 1kHz, 1% THD+N
Ground lift, HPF, Level Control
Input Connectors: 1/4", RCA, 3.5mm
Output Connectors: XLR
Construction: 14-gauge steel
Size (L x W x D): 84 x 127 x 48mm (3.3" x 5.0" x 2")
Weight: 0.70 kg (1.55 lbs)
Shipping size (L x W x D): 102 x 76 x 165mm (4" x 3" x 6.5")
Shipping weight: .87 kg (1.92 lbs)
Power: +15VDC/400mA adapter Included
Conditions: For use in dry locations only between 5°C and 40°C
Warranty: Radial 3-year, transferable

J+4 Resources

Part no: R800 8015 00