Milbert Amplifiers

The Most Musical Amplifiers. Made in USA since 1986.

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Liquid Mobile Tube Amplifier

Interest in a small-size mobile tube stereo amplifier that is reliable, presents reduced cost, and sounds great has led to the Liquid. About the size of three reams of letter-sized paper, Liquid is essentially the original BaM-230 reincarnated in a smaller chassis. Named for its smooth, flowing sound and reliable performance, Liquid offers sonic goodness and top-quality everything in a compact package.

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  • All tube audio circuitry - best sound quality
  • 30 watts per channel, 2 channels - tube watts sound better
  • Proven technology, based on BaM-230 design
  • Versatile input stage with input attenuator, allows for any signal level input voltage
  • 4-, 8- & 16 Ohm outputs allow many speaker impedance options, including 2-Ohm, 1-Ohm, and 1/2-Ohm. Stable at 1/2-Ohm.
  • Heavy-duty barrier strip, Tiffany gold/copper input connectors, machined and extruded aluminum chassis with stainless steel hardware.
  • Adjustable feedback.
  • Easily strapped for mono operation (at double power output) by paralleling inputs and outputs.

Differences, compared to BaM

Refer to the BaM Amplifier for performance data and more information as Liquid is directly related and significantly similar.

  • Smaller footprint and volumetric size - about the size of three reams of letter-size paper
  • Slightly lower rated output power (30 W vs 35 W)
  • Internal fan
  • Manual bias adjustment
  • Adjustable feedback
  • 16-ohm transformer taps allowing for various output impedances including 16-ohm, 8-ohm, 4-ohm, 2-ohm, 1-ohm, and 1/2-ohm. Despite little purpose in low-impedance speaker loading, special requests over the years suggested more possibilities in the LIQUID.


  • Size: 8.5 inches x 11 inches x 5 inches
  • Weight: 20 pounds
  • Power consumption: Full power: 20 A @ 12 V DC
  • Measurements: 30 Hz - 30 kHz full power into 8 Ohms

Milbert Liquid Mobile Tube Amplifier

Liquid's rugged chassis includes extruded and also 1/8th-inch machined aircraft aluminum. Connectors and controls are Gold / teflon chassis-mount RCA input jacks, Bourns controls, and heavy-duty barrier strip (#10 binding posts, flexible thermoplastic).

Milbert Liquid Mobile Tube Amplifier

Integral side panels provide sturdy handle reliefs and four-point mounting. Everything is clearly marked. Removable top panel allows internal access. Stainless steel hardware is used throughout. All power and signal connections are present along the main face.

Milbert Amplifiers, The Most Musical Amplifiers. Made in USA since 1986.
Milbert Amplifiers
The Most Musical Amplifiers
Made in USA since 1986

8051 Citation Drive #C
Gaithersburg, MD 20877 USA
phone 202-558-5502