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Millennia M-2b | Millennia Music & Media Systems


Two Channel Vacuum Tube Microphone Preamplifier

truth in engineering


The World’s Most Elegant Tube Mic Preamplifier

  • Musical, involving, euphonic
  • High speed transformerless, pure Class A, 350 volt
  • triode design
  • Differential topology: no attenuator “pads” required
  • Effortless dynamics, vividly realistic ambience
  • >35 dBu output headroom
  • High resolution gain control
  • Precision potentiometers, ultra-premium components
  • Built for critical professional applications
  • Gold audio connectors, tube sockets, and relays
  • 3/8“ thick radius extruded aluminum face plate
  • Durable mirror-gloss anodized finish
  • Mil spec 16 gauge cold-rolled steel chassis
  • Ultra-clean toroid power supply: internal sub-chassis
  • Hand machined aluminum knobs,
  • illuminated IT&T push buttons
  • Richly musical vintage vacuum tubes available
  • Mogami Neglex OFC audio wiring
  • Silver Teflon power wiring



Minimum Gain 14 dB
Maximum Gain (3 ranges with continuous trim) 50 dB
Frequency Response (+0 / -3 dB) 4 Hz to 130 kHz
Noise (50 dBu Gain, 10 Hz - 30 kHz, 150 ohm Source) -116 dB EIN
Total Harmonic Distortion + Noise (30 dB Gain, 10 Hz - 20 kHz Bandwidth, 0 dBu Out) < .02%
Intermodulation Distortion (50 Hz & 7 kHz) 35 dB Gain, +27 dBu Out < .0009%
Phase Response (35 dB Gain, 20 Hz - 20 kHz, +26 dBu Out) < 10 degrees deviation
Phase Response, Stereo Deviation (35 dB Gain, 20 Hz - 40 kHz, +27 dBu Out) < 1 degree
Common Mode Rejection Ratio (30 dB Gain, 1 kHz, 100 mV C.M.) > 60 dB
Slew Rate (35 dB Gain, +27 dBu Out) > 20 Volts per microsecond
Maximum Input Level (20 Hz - 40 kHz, 14 dB Gain) +20 dBu (no attenuator pads required)
Maximum Output Level (20 Hz - 40 kHz, 10 kilohm Min. Load) > +35 dBu
Interchannel Crosstalk (30 dB Gain, 1 kHz, 0 dBu Both Outputs) < 70 dB
30 dB Gain, 1 kHz, 0 dBu Both Outputs < 70 dB
Phantom Input Impedance 3.800 ohms
Output Impedance 120 ohms
DPA (B&K) Mic Powering +130 V dc max, (non-phantom)
Phantom Powering +48 V dc, +/- 2 V dc
Power Consumption 50 watts maximum
Power Requirements Selectable: 100-120, 200-240 V ac, 50/60 Hz
Dimensions/Shipping Weight 19” W x 3.5” H x 12” D, 26 lbs..

Reviews & Awards

The sound is great -- sweet, refined, full of dynamics - fabulous on grand piano.
Tony Faulkner, Greenroom Productions, UK owner of HV-3D and M-2B preamplifiers

Guitar, violin, flutes and other instruments in stereo array with Schoeps sound so pure, sweet and spacey. I especially love the tube preamp (M-2b) with the transformer engaged
sometimes. Really a happy day and hopefully many happy days yet to come... It was preceded by two months of communication with Millennia and John La Grou - and he was so kind to me, answering all possible questions
and being extremely helpful.
I. Solace [in the George Massenburg Forum,
6 Oct 2003]

This is an outstanding mic preamp. I’ve never heard our mics sound this clean on piano. We’ve been using our [46 channels of] Millennia preamps on everything... 
Jack Renner, President, Telarc Records International

A couple of experienced recording engineers here in DC thought my combination of Schoeps m222b tube mic and M-2b preamp was the greatest front end they had ever heard.
Steve Cormier

“The M-2b is an audio masterpiece. Tube technology at it’s finest- which in my book means audio technology at it’s finest! Our first choice for vocals and piano. If we owned
more channels, the M-2b would probably be first-choice on everything until we ran out of them! Like everything from John La Grou’s workbench, the M-2b is built like a fine watch. A pleasure to hear, see, and touch.”
Randy Ezratty, Effanel Music, Inc.

Still mesmerized each time we listen to this thing - the more we do with it, the more harmonics jump outta this thing! And it isn’t even broken IN yet! It’s just absolute insanity.
Compliments to the chef.
Ira Segall

product awards - 0

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Contact Info

Millennia Media, SPC
6411 Capitol Avenue
Diamond Springs, CA 95619
T (+1) 530-647-0750

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