Radial EngineeringJ48 Active 48V Direct Box
intermediate
New retail price (MSRP)
$239
Used market: $195*
Specifications
1 of 6 values have a recorded source- Type
- di_box·
- Input connector
- 1/4" TS High-Z Instrument·
- Output connector
- 3-Pin Balanced XLR Male·
- Description
- High-performance active DI box for guitars, basses, and keys. Converts High-Z (220kΩ) unbalanced signals to Low-Z (600Ω) balanced XLR with phantom power rail boost.·
- Needs phantom power
- yes✓
- Indexable Locales
- ·
What the datasheet actually says
Quoted verbatim from the manufacturer’s own page, with the date we checked it. We state what is printed, not what anyone intended by it.
The maker’s own documents disagree
«Output Impedance: 200Ω - XLR output»
Radial's own J48 specifications page gives an output impedance of 200 ohms, while the J48 user guide spec table ("J48 MK2 Specifications") and the guide's body text both give 600 ohms balanced. The two current Radial documents for the same product do not agree.
checked 8/6/2026Setups using this gear
* Estimated with the depreciation fallback (~82% retained value).