The Warm Audio Sound Techniques Jude Microphone Preamp brings one of British recording history’s most celebrated console circuits into a dedicated single-channel preamp built for the modern studio.
Created through an official collaboration between Warm Audio and Sound Techniques, Jude faithfully recreates the original A-Range microphone preamp circuit developed by Geoff Frost for the custom consoles at London’s legendary Trident Studios. With its dual-discrete Class-A amplifier, custom CineMag transformers, and distinctive Z-Match impedance control, Jude delivers the depth, punch, saturation, and musical character associated with classic recordings from The Beatles and Paul McCartney to David Bowie, Elton John, and Queen. Rather than simply chasing the flavor of a vintage British console, the Jude Microphone Preamp is built around the original Sound Techniques circuit topology. Its signal path incorporates the dual-discrete 3035 Class-A amplifier design along with custom-wound CineMag input and high-purity nickel output transformers. Sound Techniques specified the component selection and hand-wired PCB layout, including Nichicon audio-grade and Wima capacitors and carbon resistors, allowing Warm Audio to manufacture the preamp while maintaining the response and character of the original design. Whether you're tracking vocals, electric guitars, acoustic instruments, piano, or drums, Jude gives sources the weight and dimensionality that made those early Sound Techniques consoles so desirable. One of Jude's most creative tools is its 9-position Z-Match impedance tone control, derived from Geoff Frost's original 8-lead impedance-matching circuit. Changing the impedance alters the relationship between the connected microphone and the preamp, letting you explore different combinations of gain, response, and tonal character. That makes Jude especially useful with a varied microphone collection, where vintage dynamics, ribbons, condensers, and modern studio microphones can each respond differently to the available impedance settings. Add up to 76 dB of gain, 48V phantom power, polarity switching, line-level operation, flexible XLR and 1/4-inch connectivity, and VU metering, and Jude becomes far more than a piece of recording history—it is a versatile analog front end built for everyday tracking.
Warm Audio Sound Techniques Jude Preamp Features
- Original Sound Techniques A-Range microphone preamp circuit developed for the custom consoles at Trident Studios
- Official collaboration between Sound Techniques and Warm Audio
- Dual-discrete 3035 Class-A amplifier design delivers classic British console depth, punch, and musical character
- Custom-wound CineMag input and output transformers maintain the response and character of the original circuit
- 9-position Z-Match impedance control provides multiple tonal interactions with vintage and modern microphones
- Hand-wired PCB construction follows a layout specified by Sound Techniques
- Nichicon audio-grade and Wima capacitors plus carbon resistors preserve the intended circuit performance
- 48V phantom power supports condenser microphones
- Polarity switch helps address phase relationships during multi-microphone recording
- Line-level mode expands Jude's usefulness beyond microphone recording
- VU meter provides convenient visual level monitoring
- Suitable for vocals, guitars, piano, drums, and other sources that benefit from rich analog console character
- Hand-tested and inspected by Warm Audio technicians
Warm Audio Sound Techniques Jude Preamp Specifications
- Preamp Gain: 65 - 76dB [40Ω Source Impedance]
- Variable Mic Input Impedance: 60Ω | 200Ω | 1.5KΩ
- Self-Noise: -99 dBu (A-wtd)
- THD: 0.008%
- Inputs: XLR Mic | TS/TRS ¼”
- Outputs: XLR / ¼” TRS Line-Level
- Frequency Response: 10 Hz - 25 kHz (+/-2dB)
Warm Audio Sound Techniques Jude Preamp Includes
- Warm Audio Sound Techniques Jude Preamp
- Power Cable
- Manufacturer Warranty
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