Hazelrigg Industries

4DI - A DI Solution to Die For! Hazelrigg Industries has expanded its acclaimed Solution Series with the new 4DI, a powerhouse addition to a lineup that includes the VLC, VNE, VEC, and VDI. This innovative unit combines four channels of Doug Fearn’s renowned VT-I/F Direct Injection Box circuits, all packed into a sleek 2-space rackmount design. It's an ideal choice for a wide range of applications, from Houses of Worship and live FOH (Front of House) setups to recording studios and beyond.

DLC Vacuum Tube Inductor Equalizer: Classic Tube Warmth with Precision EQ Control The DLC Vacuum Tube Inductor Equalizer from Hazelrigg Industries brings a classic all-tube EQ circuit to your audio setup. Based on the passive equalizer circuit from the VLC and originally inspired by the D.W. Fearn VT-5, the DLC offers refined tonal shaping with vintage warmth. Its hybrid design combines a vacuum tube input stage and a solid-state output amplifier, making it versatile for both recording studios and live sound environments.

DNE Pulse Width Modulation Compressor: Fast, Flexible Compression for Any Audio The DNE Pulse Width Modulation (PWM) Compressor from Hazelrigg Industries delivers top-tier compression circuitry inspired by the VNE and the legendary D.W. Fearn VT-7. Optimized for both ease of use and powerful performance, the DNE offers an intuitive interface and robust controls, making it perfect for both studio and live sound applications.

DVA Vacuum Tube Microphone Preamplifier/DI: A Blend of Vintage Warmth and Modern Precision The DVA Vacuum Tube Microphone Preamplifier/DI by Hazelrigg Industries is a premium hybrid preamp that combines the best elements of the classic Hazelrigg VLC and the D.W. Fearn VT-2. Designed with a single 6072a vacuum tube, the DVA captures the iconic sound of tube-based preamps while integrating a high-output, low-distortion solid-state signal path, making it a versatile addition to any 500 series rack.

Tube DI (Direct Injection) Interface A reimagining of the legendary D.W. Fearn VT-1/F, the VDI is an all-triode Vacuum Tube Direct Box in a single channel configuration. Unlike the original VT-I/F dual channel design, the VDI is a single channel offering housed in a robust, low profile steel chassis, ready to slip into a backpack or gig bag.

The DWF Hazelrigg VDP is a handcrafted premium two-channel tube preamp and DI designed to deliver the unmistakable warmth, depth, and musicality of a fully tube-driven signal path. Built in the USA with meticulous attention to detail, the VDP combines vintage-inspired tonal character with the reliability, headroom, and low-noise performance expected in modern professional studios. Featuring transformer-coupled input and output stages together with a pure all-tube signal path, the VDP produces rich harmonic complexity, smooth saturation, and a refined analog sheen. Its design preserves the dimensional depth and musical response associated with classic tube equipment while maintaining exceptional clarity and articulation. The VDP draws heavily from the acclaimed circuitry and power architecture of the legendary D.W. Fearn VT series, carrying forward the sonic heritage that shaped countless iconic recordings. At the same time, it introduces its own distinct tonal identity with increased gain, enhanced saturation capabilities, and a polished high-end character unique to the Hazelrigg lineup. Designed as a highly versatile front-end solution, the VDP complements a wide range of microphones and recording sources. It provides clean, detailed gain for ribbon microphones, articulate presence for condenser microphones, and substantial headroom for dynamic microphones and high-output instruments. Offering approximately 6 dB more gain than the VLC and the classic VT-2, the VDP delivers greater flexibility for both transparent recording and harmonically rich tube coloration. Its intuitive control layout and premium build quality make it an ideal choice for vocals, instruments, DI recording, and high-end studio production workflows.

Tube Microphone PreampTube DI (Direct Injection)Interface Passive 4-way LC EqualizerLine Level Processor for Tone ContouringThe debut offering in the Hazelrigg Industries Solutions Series, the VLC is a powerful and elegant All-Tube Preamp/EQ combination designed to address the sonic challenges faced by today’s audio professionals.

Ideal for tracking and mixing, the VNE features an all Class-A vacuum tube audio path, like all D.W. Fearn and Hazelrigg Industries products. As originally introduced in the D.W. Fearn VT-7 Stereo Tube Compression Amplifier, the gain reduction circuit utilizes readily available tubes to deliver classic tube compressor performance, while employing an innovative Pulse Width Modulation control circuit to drive the compression. The combination of this precision PWM control methodology and D.W. Fearn’s high fidelity compression amplifier design result in an audio tool that delivers comprehensive dynamics control, without imparting unwanted tonal artifacts on the source material. In use, the VNE can be applied as subtly or aggressively as desired while retaining a beautifully transparent sonic signature.