Introducing Heritage Audio’s HA-81A EQ: a new mix of 2 classic console circuits.
The HA-81A EQ 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.
Description
Specification
- Microphone input impedance: HI=1200 Ω minimum, LO=300 Ω minimum. Higher gain positions gradually have greater impedances, optimum for low gain ribbon mics. Input is transformer balanced and floating.
- Line input impedance: 10 kΩ bridging, transformer balanced and floating.
- Output impedance: Less than 75 Ω, transformer balanced and floating, to drive a load of 600 Ω.
- Maximum output: Greater than +26.5 dBu into 600 Ω (internally terminated).
- 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 at 80 dB mic gain.
- Output stage noise: Less than -100 dBu.
- Power consumption: Less than 150 mA @48 V DC.
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