Warm Audio WA73
1-Channel Microphone Preamp in British 1073 Style

Latest User Reviews
Not what i was expected
great sounding pre
I recently decided it was time to upgrade from the built in preamps in my Focusrite Sapphire to a 'real' external preamp. My budget was about 600 EUR. Afer a LOT of online research, I narrowed my options down to 6 preamps, in roughly the same price range. The preamps were:
ART Pro MPA II
Warm Audio TB12 Tone Beast
Black Lion Audio B173 Preamp
FMR Audio RNP 8380
Warm Audio WA73
Focusrite ISA One Analog
As I will be using the preamp mostly for vocals and bass, I tested both those signals.
I plugged my Ibanez 600 in passive mode into my BSS DI, into the preamp. For vocals, I hooked up my SM7B straight into the preamp, into Logic X. The results:
The Warm Audio WA73 is a great pre, and almost ended up being the preamp I chose. It sounds amazingly large, it has limited but great sounding tone options, and heaps of warm gain. I ended up going for the ART PRO MPAII, because it has that comparable warmth, but with two channels and more options.
Technical Data
- Manufactured by Warm Audio
- Released in 2018
- Average price : $655
- Discrete Class A circuit
- Carnhill transformer
- 80 dB gain
- Incremented potentiometer
- Tone button for switching the input impedance
- Switch for phase reversal
- Low-cut filter 4-step switchable (50, 80, 160, 300 Hz)
- LED meter
- 48V Phantom power
- XLR microphone input
- Line input: 6.3 mm jack
- Instrument input: 6.3 mm jack
- Insert input and output: 6.3 mm jack
- Line output: XLR and 6.3 mm jack
- Integrated power supply unit (115/230 V)
- Build: 19" / 1 U
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