Two complete classic 73 recording channels – preamp and EQ – in one 2U rack unit. The Heritage Audio HA73EQX2 Elite is the dual-channel version of the HA73EQ Elite: two mic preamp/equalisers in one box, built to the same specifications as Heritage Audio’s 73 JR II, 73 EQ JR and DMA 73. Modern production methods are used, while the parts that make the sound – Carnhill transformers and correct inductors – stay.
Why customers choose it
Who it is for
Home and project studios recording stereo sources or two sources at once, vocalists and instrumentalists, and engineers who want the classic 73 channel sound for tracking vocals, guitars, bass and drums, or for shaping tracks while mixing.
What’s in the box
- 1 x Heritage Audio HA-73EQX2 Elite
- AC power cord (EU & US)
- 1 x Power supply HA-PSU04
Specifications
| Channels | 2 |
|---|---|
| Format | 2U rack |
| EQ | High shelf, mid peak, low shelf, variable HPF, EQ bypass |
| Mic input impedance | HI 1200 ohm / LO 300 ohm minimum; transformer balanced and floating |
| Line input impedance | 10 kohm bridging, transformer balanced and floating |
| Output impedance | Less than 75 ohm, transformer balanced and floating (600 ohm load) |
| Maximum output | Greater than +26.5 dBu into 600 ohm |
| THD | Less than 0.025 % at 1 kHz; less than 0.05 % at 100 Hz |
| Frequency response | 20 Hz (+0.3 dB) to 20 kHz (-0.2 dB), EQ off |
| Maximum gain | Slightly greater than 80 dB |
| Equivalent input noise | Less than -125 dBu |
| Output stage noise | Less than -100 dBu |
| Power consumption | Less than 190 mA at 48 V DC |
| Power | External power supply |
| Type | Microphone preamp and EQ |
| EQ Bands | 3 (high shelf, mid peak, low shelf) |
| Pad | -20 dB |
| Transformers | Carnhill |
Good to know
- Only need one channel? See the HA73EQ Elite.
- Only need the preamps? See the HA73X2 Elite.
- Higher gain positions raise the input impedance – good for low-output ribbon mics.
FAQ
Can I bypass the EQ?
Yes. There is an EQ bypass switch.
Does it power condenser mics?
Yes. It has +48 V phantom power.









































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