Hazelrigg Industries 4DI 4-Channel Vacuum Tube Direct Box - Ultimate Audio Solution
The Hazelrigg Industries 4DI 4-Channel Vacuum Tube Direct Box is the latest standout in the Solutions Series, joining the VLC, VNE, VEC, and VDI. This innovative design integrates four of D.W. Fearn’s legendary VT-I/F direct injection circuits into a convenient 2-space rackmount enclosure, making it an ideal choice for Houses of Worship, front-of-house (FOH) live setups, recording studios, and beyond. Handcrafted in the USA, the 4DI elevates your audio with exceptional performance across a range of instruments.
A Modern Take on a Classic Design
Reimagining the classic D.W. Fearn VT-I/F, the 4DI expands the original dual-channel concept into a powerful 4-channel all-triode vacuum tube direct box. Housed in a robust steel 2-space rackmount chassis, it combines portability with professional-grade functionality, delivering stunning sound quality for both studio and stage applications.
Versatile Connectivity for Any Setup
The 4DI’s front panel offers four locking 1/4” Instrument Input jacks, each paired with a locking Ground Lift switch and LED indicators for signal and ground status, ensuring reliable operation. On the rear, four additional 1/4” input and pass-through jacks (wired in parallel to the front connectors) provide flexibility, while four microphone-level outputs on XLR connectors integrate seamlessly with premium preamps. An IEC Mains Socket, Power Switch, and 115V-220V Mains Selector complete the rear panel, supporting global use.
Exceptional Sound for Every Instrument
Built on the high-headroom circuit of the VT-I/F, the 4DI delivers dynamic, vibrant audio. It enhances electric bass and guitar with remarkable clarity, adds depth and power to vintage or modern synthesizers, and brings unparalleled realism to piezo-equipped acoustic instruments. This is a direct box that transforms your sound, making it a must-hear for audio professionals.
Key Features of the Hazelrigg 4DI
- All-tube DI circuit originally designed by D.W. Fearn for superior sound
- 4 front-panel locking 1/4” Instrument Input jacks for secure connections
- 4 rear-panel 1/4” input and pass-through jacks for added flexibility
- 4 microphone-level outputs on XLR connectors for preamp compatibility
- 4 locking Ground Lift switches with LED indicators for noise-free operation
- Durable all-steel 2-space rackmount design, handcrafted in the USA
- 7-year warranty (90 days for vacuum tubes) for long-term reliability
Technical Specifications
- Channels: 4
- Input: 4 Locking 1/4” Front Panel Jacks, 4 Rear Panel 1/4” Jacks
- Pass-Through Output: 4 Rear Panel 1/4” Jacks
- Output: 4 XLR Connectors (Microphone-Level)
- Ground Lift: 4 Locking Toggle Switches with LED Indicators
- Power: 115V-220V Selectable, IEC Mains Socket
- Chassis: All-Steel, 2-Space Rackmount
- Warranty: 7 Years (90 Days for Vacuum Tubes)
