Radial Engineering J+4 Stereo Line Driver
The Radial Engineering J+4 is a stereo line driver that boosts unbalanced, low-output signals from instruments, computers, mobile devices, and more up to a balanced +4dB line level for professional audio systems. With multiple input options, transformer isolation, and pristine active buffering, the J+4 ensures clean, noise-free performance and the ability to drive long cable runs without signal degradation. It’s the perfect solution for integrating consumer or instrument-level devices into professional recording, live sound, and broadcast environments.
Key Features
- Boosts Stereo Signals — raises -10dB unbalanced signals to +4dB balanced line level.
- Multiple Input Options — ¼” TRS, RCA, and 3.5mm (1/8″) mini-jack for compatibility with a wide range of devices.
- Transformer Isolation — eliminates ground loops and reduces unwanted noise.
- Active Buffering — provides clean gain and maintains sonic integrity.
- Balanced XLR Outputs — professional-grade outputs ready for mixing consoles, interfaces, and recording gear.
- Rugged Construction — housed in Radial’s heavy-duty steel chassis for durability in studio or stage environments.
Applications
- CD/DVD Players — boost low-level RCA outputs to professional line level.
- Computers & Laptops — convert 3.5mm outputs into clean, balanced signals for AV or recording setups.
- Keyboards & Synths — provide sufficient gain to drive mixer inputs, even with vintage instruments like Rhodes pianos.
- DJ Mixers & Media Players — connect consumer-level devices directly into pro sound systems with no loss of quality.
Specifications
- Input Connectors: Dual ¼” TRS, dual RCA, 3.5mm stereo mini-jack
- Output Connectors: Dual balanced XLR
- Output Level: +4dB balanced line level
- THD+N: Exceptionally low with active buffering
- Isolation: Transformer-isolated outputs to eliminate hum and buzz
- Construction: Rugged steel chassis
- Format: Desktop unit