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HAZELRIGG INDUSTRIES

VDP

Dual Mic-Preamps

2-channel tube mic preamp & DI, transformer-balanced I/O, +63dB gain, phantom power, 20dB pad, polarity switch, high-pass filter, handbuilt in USA

$5,499.00 CAD
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Description

The Hazelrigg Industries VDP is a handcrafted 2 channel vacuum tube microphone preamplifier designed for professional recording environments where clarity, depth, and musical character are essential. Built around a classic tube-driven signal path, the VDP delivers a smooth and natural sound that complements vocals, acoustic instruments, drums, and a wide range of studio sources. Its carefully engineered design combines the warmth associated with vintage tube equipment with the reliability and consistency expected in modern recording studios.

Each channel features transformer-balanced microphone inputs, selectable phantom power, polarity reversal, a high pass filter, and a switchable input pad for handling a variety of microphones and recording situations. A convenient front-panel combo input also allows direct connection of instruments for quick tracking sessions. The intuitive attenuation control gives engineers the flexibility to shape clean recordings or add a subtle sense of character and saturation when pushed harder, making the VDP equally comfortable in transparent recording chains or more colorful productions.

The VDP is assembled with premium components and individually tested to ensure long-term reliability and consistent sonic performance. Fully regulated power supplies, low-noise tube operation, and robust construction make it a dependable centerpiece for studios seeking a refined analog front end with a timeless recording character. 

Features

Pure Tube Signal
All-tube signal path delivers warm, musical tone with natural harmonic depth.

Two-Channel Preamp and DI
Record microphones and instruments through two premium channels in one studio-ready unit.

Transformer-Coupled Sound
Transformer input and output stages add rich character while keeping the signal balanced and solid.

D.W. Fearn Heritage
Inspired by the classic VT series design, with a refined sound for modern studios.

High Headroom
Handles quiet microphones and loud sources with clarity, depth, and control.

Musical Saturation
Adds smooth tube color and presence without losing detail.

Front Panel Inputs
Easy-access mic and DI inputs make tracking fast and convenient.

High Pass Filter
Helps reduce unwanted low-end buildup before recording.

Input Pad
Tames loud sources for cleaner gain staging.

Phantom Power Safety
Locking phantom power switch helps prevent accidental activation.

Polarity Control
Phase reversal makes multi-microphone setups easier to manage.

Handbuilt in the USA
Crafted with careful build quality for professional studio use.

Specifications

General Specifications
Device Type: Dual-Channel Vacuum Tube Microphone Preamplifier & DI
Signal Path: All-tube
Construction: Handcrafted in USA
Channels: 2
Input Type: Transformer-coupled microphone and DI inputs
Output Type: Transformer-balanced low-Z
Rack Size: 19" rackmount
Rack Height: 3.5"
Depth: 14"
Weight: 13 lbs.
Power Requirement: 115V or 230V AC, 50/60Hz
Power Consumption: 25W

Performance Specifications
Gain: +58 dB minimum
Maximum Gain: +63 dB
Frequency Response: ±0.2 dB 20 Hz to 20 kHz
Frequency Response Extended: ±0.5 dB 11 Hz to 28 kHz
Frequency Response Limits: -3 dB @ 0.5 Hz & 50 kHz
THD + Noise: <0.5% 20 Hz to 20 kHz
Intermodulation Distortion: <0.80% SMPTE
Signal-to-Noise Ratio: 74 dB minimum
Equivalent Input Noise: -124 dBm maximum
Maximum Output Level: +22 dBm unterminated
Minimum Input Level: -65 dBm nominal
Maximum Input Level: +20 to +30 dBm without pad
Maximum Input Level with Pad: -5 dBm
Input Impedance: 150 ohms
Input Load Impedance: 1.5k ohms
Output Impedance: Approximately 800 ohms

Tube Complement
Tube Type: (2) 6072A
Tube Type: (2) 12AT7
Tube Selection: Low-noise selected tubes

Inputs & Outputs
Microphone Input: XLR-3 female
DI Input: Front-panel 1/4"
Front Input Type: XLR / 1/4" combo jack
Output Connector: XLR-3 male
Connector Plating: Gold-plated
Pin Configuration: Pin 1 Ground, Pin 2 Hot, Pin 3 Cold

Controls & Functions
Attenuation Control: Variable output attenuation
Phantom Power: +48V switchable
Pad: -20 dB switchable
Polarity Reverse: Switchable
High Pass Filter: Switchable
Power Indicator: Red LED
Output Signal Indicator: Bi-color LED
DI Auto Detection: Automatic switching on 1/4" insertion

Power Supply
B+ Supply: Fully regulated solid-state
Filament Supply: Fully regulated solid-state
Phantom Supply: Fully regulated +48V
Transformer Type: Toroidal power transformer

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