The Heritage Audio DMA73 is a true dual 1073 style mic preamp in a 1 rack unit format. It has some added key features that will cover all the recording needs for engineers and musicians that don´t find the need to track with eq.

Employing only discrete circuitry and conventional components, the DMA73 is a faithful 3 stage all class A 1073 preamp. Styroflex and tantalum capacitors have been used throughout.  No corners  cut.

A useful all discrete class A hi pass filter has been added, essential for recording everything with the exception of probably  kick drum and and bass.

The Line mode allows for reamping of prerecorded tracks and it´s perfect for adding some class A color to lifeless recordings.

The DI circuit is an all discrete class A JFET circuit ahead of the MIC transformer, so all the juice is there. Since its introduction in 2012, it has become a classic DI for bass.

Power handling has been addressed by means of an external linear power supply, which is included in the package.

• Microphone input impedance: HI, 1200 Ohm minimum, LO, 300 Ohm minimum. Higher gain positions gradually have greater impedances, optimum for lo gain ribbon mics. Input is Carnhill transformer balanced and floating.
• Line input impedance: 10K Ohms bridging, Carnhill transformer balanced and floating.
• DI input impedance: Greater than 2 Megohms, unbalanced.
• Output impedance: Less than 75 Ohms, Carnhill transformer balanced and floating, to drive a load of 600 ohms (factory terminated).
• Maximum output: Greater than +26dBm into 600 ohms.
• THD: Less than 0.025% at 1 Khz, less than 0.05% at 100Hz.
• Frequency response: 20Hz ( +0.3dB ) to 20Khz (-0.2dB)
• Maximum gain: Slightly greater than 80dB
• Noise: Less than -100dBm.
• Power consumption: 88 mA per rail @+-16VDC.

Super nice
I’m not sure why there’s barely any reviews on this pre virtually anywhere. After owning this pre for over a year now I’ve decided to write a review. This preamp is sick! Sounds very very pleasing and rich. Lots of color when using different gain options. Generally I just leave the output all the way up and adjust the gain accordingly. Right now I’m recording an amazing female pop/Rnb singer from season 8 of NBC’s ‘The Voice’ and I couldn’t be more pleased.
Mikey from NY on February 25, 2016Music background: Artist/Producer/Guitarist/Drummer/Beat Maker/Full time cool guy
One of the better Preamps!
Well it didn’t take me too long to finally realize how much potential this preamp has. Its absolutely full of headroom beyond anything I would need. It sounds great on vocals, bass DI, mic’ing an amp, and a plethora of others. Between AMS Neve, BAE and Heritage Audio (the top three 1073 clones) I would choose Heritage Audio over BAE or AMS Neve (never go with AMS!). I’m very happy with the results of this preamp. Does it really have a 1073 flavor? Well yes and no. I mean it certainly is not just a generic box or preamp. But at the same time it really has a warmth and color that is not what you’d think of with a 1073. I suppose it´s pretty unique unto itself. Overall, this would be one of the higher end preamps that you should seriously consider along with Avalon, API, and some others.
Ryan Mowdy from Oklahoma City, OK on July 18, 2015Music background: lots o' stuff
Great Pre!
Had it since NOV 2014. Sounds like “money” when used properly. No regrets on this purchase so far. Nice features with solid construction. It’s been a blast working with Carson McClain getting the best gear in the world.
Jay Thompson from Odenton, MD on March 9, 2015Music background: Musician/Engineer/Producer
The Best
There is a reason the 1073 preamp is so praised….it sounds fantastic on everything! Once I put this in my studio my other pres started collecting dust. Recording one track with it is nice.You will notice the subtle color and thickness the circuit adds. But get a whole tune down with these and that’s where the magic happens! Another great feature on this pre is the separate line ins on the back. Send your final mix into it and mess with the input and output gain to get a even more analog mojo happening! Lots of options, and top shelf sound. What more could you ask for???
Nick from NJ on October 20, 2014Music background: Musician, Producer, Ect...

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