PMT Audio
Hazelrigg Industries 4DI Tube DI

Hazelrigg Industries

4DI Tube DI

DI Box

From Hazelrigg Industries:

The 4DI combines four of Doug Fearn’s legendary VT-I/F Direct Injection Box circuits in a convenient 2-space rackmount enclosure that is perfect for House of Worship, FOH live situations, recording studios and more.

An ideal solution for both studio and stage, the 4DI is offered as part of the Hazelrigg Industries Solutions Series and will deliver incredible results with amplified acoustic instruments, electric bass and guitar, synthesizers or more.

Specs

Type
Four-channel all-triode vacuum tube direct box, 2 space rackmount
Input
200 mV nominal unbalanced
Input load impedance
1 megohm minimum
Minimum input level
5 mV nominal
Maximum input level
2.3 volts P-P for 1% THD
Gain
-10 dB
Frequency response
+/- 0.2 dB 10 cps to 20 kc, -3 dB @ 0.5 cps and 95 kc
THD + noise
<0.3% 20 cps to 20 kc
Intermodulation distortion
<0.01% SMPTE
Noise
minimum 90 dB below output (22 cps to 22 kc bandwidth)
Output
Transformer Balanced (matches 150 ohm input)
Output level
-30 dBm nominal
Maximum output level
-12 dBm
Power requirements
120/220 VAC 50/60Hz 25W
Dimensions
6.25”W x 2.25”H x 9.5”D (15.9cm x 5.7cm x 24.2cm)
Weight
14 lbs. (6.35kg)

Source: Hazelrigg Industries 4DI manual (PDF), Specifications page