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Hazelrigg Industries

Hazelrigg Industries DLC

500-series tube-inductor EQ

Equalizer

$1,199Manufacturer list price

Specifications

Type
Equalizer
Description
500-series tube-inductor EQ
Topology
tube/valve (hybrid), transformer-coupled, discrete
Signal path
Analog
Channels
1
Channel format
balanced line level
Form factor
500-series module
Powered
true
Frequency response
20Hz-20kHz ±0.1dB (per third-party spec aggregation, not confirmed on manufacturer page)
Country of manufacture
USA

Details

Controls: High Cut, High Boost, Low Boost, Low Cut controls, each with a frequency-select switch; bypass switch

I/O: Front-panel microphone/instrument input; transformers in both input and output stages; fits standard 500-series rack/lunchbox

Notes: FLAG 500-vs-rack: 500-series module version of the passive LC EQ circuit found in the VLC, itself originally from the D.W. Fearn VT-5 (flagged D.W. Fearn heritage — two generations removed: VT-5 -> VLC -> DLC). Shares filter capacitors and hand-wound inductor with VLC per Vintage King, though audio path differs slightly (hybrid tube-input/solid-state-output vs VLC's fully tube path — flagged). 12dB bell boosts / 12dB shelving cuts across stated corner-frequency pairs per third-party spec summary. 7-year warranty (90 days tubes). Price $1,199 consistent across Sweetwater/Vintage King/Perfect Circuit.

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