Heritage Audio 8173

Heritage Audio 8173 is a microphone preamp and EQ module for the 80 Series, with a Class A mic preamp, 80 dB of gain, 4-band EQ and High-pass Filter.

The 8173 module is designed to fill the input module slots in vintage 80 Series mixing consoles. It is also compatible with the powered Heritage Audio Frame 8 and Rack 2 enclosures. The 8173 can be easily described as a 1073 with the mid bands of a 1081. Heritage chose to keep the 1073 Baxandall EQ low and high bands, as they sound amazing, but implemented a 3-way high frequency selection, like the 1084.

Heritage Audio 8173 Features

• Incredibly accurate combination of the classic 73- and 81-style console modules
• For use with approved 80 Series chassisClass A mic preamp with 80dB of gain, plus a sweet-sounding 4-band EQ
• Equalizer's mid-bands nearly the entire audible frequency range
• Class A line-level amplifier with 10dB of gain
• Low- and high-shelving EQs with Baxandall curves for smooth, natural-sounding response
• High-pass filter, switchable between 50Hz, 80Hz, and 300Hz
• +48V phantom power is supplied by your 80 Series chassis
• Designed with the same components, specifications, and construction techniques as the original British-produced modules

Heritage Audio 8173 Specifictions

• Microphone input impedance: High=1200 Ω minimum; Low= 300 Ω minimum. Higher gain positions gradually havegreater 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.
• D.I. input impedance: Greater than 2 MΩ, unbalanced.
• Maximum output: Greater than +26 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).
• Maximum Gain: Slightly greater than 80 dB.
• Output stage noise: Less than -125 dBu EIN.
• Power consumption: Less than 86 mA per rail @ ± 16 V DC.
• Dimensions (W x H x L): 38 mm x 135 mm x 150 mm