Radial - J48 Premium Active DI
Phantom Powered Active Direct Box
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Higher Rail Voltage, Higher Headroom
Most battery-powered guitars and basses will produce as much as 7 Volts when played at maximum volume, which can easily overload typical active direct boxes which have are only able to handle about 3 Volts. The J48 uses a unique switching power supply that raises the internal rail voltage so it can handle up to an incredible 9 Volts, resulting in improved signal handling and greater headroom. This additional headroom significantly reduces distortion of all types, allowing the natural tone and character of the instrument to shine through.https://www.youtube.com/watch?v=rWg1uvSrftM
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
Applications
- 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
J48 Applications
Specifications |
|
| Audio circuit type: | Proprietary analog circuit with low-noise op-amp |
| Frequency response: | 20Hz ~ 20kHz |
| Dynamic range: | 109dB |
| Total harmonic distortion: | 0.002% @ -5dBu |
| Intermodulation Distortion: | 0.003% @ -3dBu |
| Phase Deviation: | +10º at 20Hz | 0º at 1kHz | -1º at 20kHz |
| Input Impedance: | 220kΩ - ¼" input |
| Output Impedance: | 200Ω - XLR output |
| Equivalent Input Noise: | -103dBu |
| Noise Floor: | -99dB below 0dBu |
| Maximum Input: | +10dBu |
Features |
|
| Input pad, Mono Sum, 180° polarity reverse, Ground lift, HPF | |
| Input Connectors: | 1/4" |
| Output Connectors: | Balanced XLR, 1/4" Thru |
General |
|
| Construction: | 14 gauge steel chassis and outer shell |
| Size (L x W x D): | 3.3" x 5.0" x 2" (84 x 127 x 48mm) |
| Weight: | 1.55 lb (720 g) |
| Power: | 48V phantom - proprietary digital switching |
| Conditions: | For use in dry locations only between 5°C and 40°C |
| Warranty: | Radial 3-year, transferable |
Radial Engineering
AUTHORIZED DEALERAvailable in store & online — Nantel Musique
Radial Engineering is one of the most recognized names in musical instruments worldwide. Known for exceptional build quality, innovative design, and reliable performance across every price range, Radial Engineering instruments are trusted by beginners and touring professionals alike.
at nantel musique, we carry a curated selection of radial engineering sound systems accessories — each one inspected, set up, and backed by our expert team. every purchase includes our satisfaction guarantee and dedicated after-sales support.

