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All Discrete, Class-A 73-Style Mic Preamp with an Extremely Versatile and Musical Console Style Equalizer
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The best of both worlds.
Introducing Heritage Audio’s HA-81A: a new mix of 2 classic console´s circuits.
The HA-81A Elite is a channel strip that combines an all discrete, Class-A 73-style mic preamp with an extremely versatile and musical console style equalizer — arguably the trick for obtaining instant classic sound for all recording engineers.
The mic preamp that meets the demands.
The HA-81A’s preamp section is an 80 dB, all discrete Class-A design with Carnhill/St. Ives input and output transformers, exactly the same one found in the other Elite Series modules.
The preamp features gain, output trim, -20db pad, polarity reverse, and +48v phantom power.
The best console´s style equalizer ever made.
The HA-81’s equalizer section is an exceptionally musical 4 band, inductor-based equalizer with high and low pass filters. Where 3 band equalizers such as the typical 73-style exceed at musicality but may get short of features, the HA-81A EQ equally excels on both. Extreme control over Shelf or Bell response curves on the high and lows, dual Q on both mid bands, with dedicated high and low mid ones, and a range of 40 frequency selections to choose from.
Hybrid design. Heritage quality.
The Heritage HA-81A utilizes only rotary switches and precision, concentric potentiometers. And like all of the products in our Elite range, the HA-81A is built with the most cutting edge methods in manufacturing and design, without ever compromising audio quality or cutting corners — all at the Heritage headquarters in Spain.
Heritage Audio is one of the few premier manufacturers of Neve preamp and compressor clones. With their established team of veteran designers, they claim to offer the most historically accurate clones of the fabled Neve units.
Microphone input impedance: HI, 1200 Ohm minimum, LO, 300 Ohm minimum. Higher gain positions gradually have greater impedances, optimum for low gain ribbon mics. Input is transformer balanced and floating.
Line input impedance: 10KOhms bridging, transformer balanced and floating.
Output impedance: Less than 75 Ohms, transformer balanced and floating, to drive a load of 600 Ohms.
Maximum output: Greater than +26.5dBu into 600 Ohms (internally terminated)
THD: Less than 0.025% at 1Khz, Less than 0.05% at 100Hz.
Frequency response: 20Hz (+0.3dB) to 20Khz (-0.2dB).EQ Off. For EQ ON frequency response please check the features section.
Maximum Gain: Slightly greater than 80dB.
Equivalent Input Noise: Less than -125dBu at 80dB mic gain.
Output stage noise: Less than -100dBu.
Power consumption: Less than 150 mA @48VDC.