Preamps

The HA-73's mic preamp offers a fully discrete Class A design with 80 dB of amplification, using Carnhill St Ives input and output transformers, the same as those found in other Heritage Elite Series modules. Audio. With features such as gain, output trim, -20 dB pad, reverse polarity and +48 V phantom power, this preamp meets the highest demands of audio engineers.

ARTICLE N° 93381
  • Heritage Audio HA-81A EQ
  • Mic preamp / DI
  • Elite Series
  • 1 channel
  • Microphone input impedance: HI=1200 Ω min, LO=300 Ω min
  • Higher gain positions have progressively higher Ωs
  • Optimal for low gain ribbon microphones
  • Balanced & floating input via transformer
  • Line input impedance: 10 kΩ Bridged, balanced & floating via transformer
  • Output impedance: < 75 Ω, balanced & floating via transformer, 600 Ω
  • Max output: > +26.5 dBu into 600 Ω
  • DHT: < 0.025% @ 1 kHz, < 0.05% @ 100 Hz
  • Freq response: 20 Hz ⭢ 20 kHz (EQ off)
  • Maximum gain: > 80 dB
  • Equivalent input noise: < -125 dBu
  • Output noise: < -100 dBu
  • Connections:
  • Inputs: XLR + ∅6.35mm jack
  • Outputs: XLR
  • Power supply: mains adapter provided
  • Standard 19" Rack format: 1U vertical
  • Dimensions: 482 x 280 x 44 mm
  • Weight: 3 kg
Meet the HA-73 Elite Series Mic Preamp/DI from Heritage Audio, a professional recording studio peripheral that combines a discrete Class A tube mic preamp with an extremely versatile and musical console EQ.
With this innovative combination, get instant classic sound for all your musical productions.

The HA-73's EQ is exceptionally musical, offering 4-band inductor-based EQ with high-pass and low-pass filters. Featuring precise control over shelf or bell response curves on high and low frequencies, this module offers extreme versatility with a choice of 40 selectable frequencies.

Designed with precise rotary switches and potentiometers, the HA-73 guarantees easy handling and high precision in settings. Built with state-of-the-art manufacturing methods and without compromising on audio quality, this preamp is manufactured at Heritage Audio's headquarters in Madrid, Spain.

The HA-73 Elite Series Mic/DI Preamp from Heritage Audio is the ideal tool for audio professionals looking for instant classic sound and maximum versatility for their studio recordings.
Canals
 1
Compressor / limiter
 No
Phantom power
 Yes
Power supply
 Power adapter (included)
Phase opposition
 Yes
De-esser
 No
Micro input
 1
Instrument input
 Yes
Audio outputs
 XLR
Analog input
 XLR
19" rack
 Kit 19" included, 1U