The WA-MPX is an authentic reproduction of the vintage tape machine tube preamp that launched the birth of rock 'n' roll known for its pure analog warmth, delivering impressive raw power from 300 V and a tube gain of 90 dB. During the golden age of tape recording, the original 351-style tube preamp became the king of studio technology and signature sound in the signal chain of hit recordings for artists such as 'Elvis Presley, Bing Crosby, Les Paul, Nat King Cole and Roy Orbison. and producers like Steve Albini - a timeless sound that continues to be sought after by elite sound engineers today. With premium components, true-to-original circuit design, and selectable band saturation, the WA-MPX authentically reproduces all of the analog tone of the original to bring vintage warmth and color to your sound. .

A certain story is worth repeating
The WA-MPX is an authentic reproduction of the vintage tape machine tube preamp that launched the birth of rock 'n' roll known for its pure analog warmth, delivering an impressive 300V of raw power and a tube gain of 90dB. During the golden age of tape recording, the original 351-style tube preamp became the king of studio technology and signature sound in the signal chain of hit recordings for artists such as 'Elvis Presley, Bing Crosby, Les Paul, Nat King Cole and Roy Orbison. and producers like Steve Albini - a timeless sound that continues to be sought after by elite sound engineers today. With premium components, true-to-original circuit design, and selectable band saturation, the WA-MPX authentically reproduces all of the analog tone of the original to bring vintage warmth and color to your sound. .

An Authentic Vintage Experience
The WA-MPX preamps are hand-wired with 100% discrete electronics. Each channel boasts three tubes that, with the high-gain switch engaged, bring the WA-MPX up to an incredible 90dB of gain. Each channel has custom-wound, large-core CineMag transformers on the inputs and outputs - bringing each preamp circuit to 300v. WA-MPX pres are housed in steel chassis with a brushed aluminum faceplate, vintage-style bakelite knobs, and amber-tinted VU meters. All of these key components paired with traditional build technique deliver not only a legendary “tape-era” tube pre but one of the best values in an all-tube microphone preamp on the market today. Following the Warm Formula of true-to-original tone driven by premium components, all WA-MPX are carefully hand-inspected & tested at Warm Audio Headquarters in Austin, Texas.

A tube-based sound shaping workstation
As a high-end tube mic preamp, the WA-MPX offers a wide range of analog tones; from clean volume with preserved clarity for quieter sources to richer distortion that can be pushed harder when tubes are pushed into overdrive. The WA-MPX features a set of essential controls that meet the demands of everyday professional audio use, including input impedance switching, +48V, polarity inversion, and input gain /exit. In addition to the 80Hz high-pass filter that can help tame unwanted low frequencies, the WA-MPX also houses a 2kHz low-pass filter to eliminate excessive highs for a more vintage tone profile. The classic Warm Audio "tone" control changes the impedance of the input transformer for additional analog color. A "high gain" control engages an additional 20dB of gain to bring the WA-MPX up to 90dB - very useful on low output dynamic and ribbon mics. Finally, the tape saturation control on the WA-MPX engages discrete circuitry in the signal path adding natural compression, harmonic distortion and focused tone filtering to emulate the sound of tape recorders running at 15IPS, adding just enough imperfection in the signal, especially when used on program material for mixing and mastering.

Features:
– Authentic reproduction of a tube preamp from the tape recording era
- Discreet handcrafted construction with 3 tubes per channel
– Selectable tape saturation setting, adding harmonic distortion and natural compression
- 90 dB of gain per channel
- Custom wound wide core CineMag USA transformers
- Microphone input: 600Ω transformer (6000Ω nominal)
- Microphone input with "Tone" engaged: Transformer 150Ω (1500Ω)
- Premium (2X) 12AX7 & (1X) 12AU7 vacuum tubes per channel
- 600Ω output attenuator
- High Gain control provides 20db of additional gain (from 70db to 90db) for low output mics and low volume sources
– 48v phantom power for low volume sources
- 80Hz high pass filter to control low frequencies
- 2kHz low-pass filter to concentrate the power and warmth of the preamp on the mids for more punch
- Inputs: XLR Mic, TS Instrument & TRS Line
- Outputs: XLR / TRS line level
- Level indication by VU meter
- Frequency response: 20Hz-20kHz
- Aluminum front plate, steel frame and vintage bakelite type knobs
- Internal IEC 115v/230v power socket