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Heritage Audio 1073, 6673 & Rack 2

Heritage Audio 1073, 6673 & Rack 2

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Heritage Audio 1073, 6673 & Rack 2

This bundle comprises a Heritage Audio 1073 and Heritage Audio 6673 Mic preamps and EQ modules and a Heritage Audio Rack 2 PSU


The Heritage Audio 1073 is a faithful recreation of the fabled AMS Neve 1073.



  • 80dB Class A Microphone preamplifier, HI-LO selectable minimum input impedance, balanced and floating. High gain positions show a higher impedance, ideal for old ribbon mics.

  • 10dB Class A Line Amplifier, Bridging input impedance, balanced and floating. 

  • Class A, single ended, 2N3055 driven high headroom output stage. 

  • High Frequency: +/-16dB shelving at 12 kHz, Baxandall type. 

  • Low Frequency: +/-16dB with selectable frequency shelving of 35Hz, 60Hz, 110Hz & 220Hz ,Baxandall type. 

  • Mid Frequency: +/-18dB peaking, fixed 'Q' , selectable center frequencies of 0.36kHz, 0.7kHz, 1.6kHz, 3.2kHz, 4.8kHz , and 7.2kHz , dual inductor based. 

  • High Pass Filter: 18dB per octave slope, switchable between 50Hz, 80Hz , 160 Hz & 300Hz, inductor based. 

  • EQ Button: Switches the equalizer on or off. 

  • Phase Button: Flips phase 180º



In March 1970 the first 1073 module was launched and became the standard in 80 series consoles. The 1066 was gradually replaced in newly shipped consoles and finally disappeared. The 1073 featured almost the same identical circuitry, being the most relevant differences the hi frequency shelving ( 12Khz instead of 10Khz ) and the equalizer´s mid band, which had one more center frequency, but lacked the constant Q of the 1066 . Vintage module connoisseurs do know how sweet the 1066mid band sounds and, for some, something was lost in the way. Until now...


The 6673 module is the answer to an old question among vintage module users. Should I use a 1073 or a 1066 for this specific source material? Should I need to boost at 700 Hz or would it be better to cut at 360 Hz? Should I need 12Khz or would it probably better to add 10Khz instead?
These and a lot more questions that have become "classic" in some professional environments have a new answer.


Heritage Audio is proud to introduce the 6673 module. A 100% series 80 compatible module featuring the same Class A mic preamplifier found in the classic modules with an added key feature: A 4 BAND EQUALIZER. Better said, THE 4 band equalizer as it features the same exact 3 band equalizer circuit found in the famous 1073 plus the mid band found in the 1066.
In addition, we have expanded the 1073 mid band with 3 extra frequency choices, widening the sonic palette.


Now you can boost at 700 Hz for "thick as a brick" guitars and cut at 360 Hz to get rid of the mud.



  • 80dB Class A Microphone preamplifier, HI-LO selectable minimum input impedance, balanced and floating. High gain positions show a higher impedance, ideal for old ribbon mics.

  • 10dB Class A Line Amplifier, Bridging input impedance, balanced and floating.

  • Class A, single ended, 2N3055 driven high headroom output stage.

  • High Frequency: +/-16dB selectable frequency shelving at 10, 12 or 16 kHz, Baxandall type.

  • Low Frequency: +/-16dB with selectable frequency shelving of 35Hz, 60Hz, 110Hz & 220Hz ,Baxandall type.

  • 1073 Mid Frequency: +/-18dB peaking, fixed 'Q' , selectable center frequencies of 0.24 Khz, 0.36kHz, 0.53Khz, 0.7kHz, 1.1Khz, 1.6kHz, 3.2kHz, 4.8kHz , 7.2kHz and 10Khz , dual inductor based.

  • 1066 Constant Q Mid Frequency: +/-18dB peaking, fixed ´Q´, selectable center frequencies of 0.7 Khz, 1.2 Khz, 2.4Khz, 3.6Khz, 7.0Khz, inductor based.

  • High Pass Filter: 18dB per octave slope, switchable between 50Hz, 80Hz & 300Hz, inductor based. (Although push button switches has been used instead of the classic rotary switch, the circuit is the same exact one found in vintage 1073s, sacrificing only one frequency choice for space issues. Real state is tight on these modules).

  • EQ Button: Switches the equalizer on or off.

  • Phase Button: Flips phase 180º.



The Heritage Audio Rack 2 is handmade in the EU employing the same exact ISEP mechanical components used in the Series 80 consoles. Aluminium rails, guides, etc. This will ensure your vintage modules, as well as any of the currently made, will fit like a glove.


Every channel has its own output control as well as illuminated phantom switch.


In addition, 2 discrete class Aultra high impedance JFET Direct Inputs have been implemented, allowing for direct plugging of hi impedance instruments.


Also, the Rack 2 is ready for linking up to 2 2264 compressors in 2 busses, A or B.
Back panel features Neutrik gold plated XLR connectors for Mic and Line inputs, as well as outputs.


External Power Supply Unit is connected via Neutrik gold plated 4-pin XLRs. It is configurable for 220-240v or 110v. Power supply is included and able to power up to 4 Rack 2.

Short Description Includes the Heritage Audio 1073 and 6673 Preamp and EQ Modules in a Heritage Audio Rack 2
Demo in Store N/A
Manufacturer Heritage Audio
Old Price N/A

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Ex. VAT: £3,524.17 Inc. VAT: £4,229.00

Price as configured: Inc. VAT: £3,524.17 Ex. VAT: £3,524.17

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Heritage Audio 1073 Classic Mic Pre 3 Band EQ   +£0.00
Heritage Audio 6673   +£0.00
Heritage Audio Rack 2   +£0.00
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