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Home News

Boulder 3050 mono power amplifier

Marco Lisi by Marco Lisi
July 13, 2026
in News
Reading Time: 2 mins read
boulder-3050-mono-power-amplifier

Power corrupts. Absolute power corrupts perfectly. Boulder’s flagship is their largest, most powerful, and most luxurious product in over 30 years of design. These are Boulder’s premier power amplifiers. Few people will ever see or hear them and fewer still will be lucky enough to own them. And yet because of their very existence the limits of sound reproduction have been pushed further than ever before. At every step of their development, one fundamental objective was consistent: the pursuit of absolute perfection in sound quality. Mission accomplished.

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Boulder 3050 mono power amplifier features

  • Boulder’s biggest, most powerful, and highest performing amplifier, each built to order for its new owner
  • Completely designed, manufactured, and hand-assembled at our facility in Louisville, Colorado
  • 1,500 watt power output into any load means absolute clarity and control of loudspeakers
  • Black granite and stainless steel base, cut to match the angles and footprint of both the left and right amplifiers
  • Intelligent microprocessor control so amplifiers can automatically set proper turn-on sequence via Boulder Link and transmit any necessary information to a Boulder preamp’s display
  • Every 3050 contains two of Boulder’s highest performing gain stages, the 99H, available only in 3000 Series products
  • Full Class-A biasing to maximum output, managed with an analog circuit that reduces bias current whenever possible to increase efficiency and reduce heat
  • 120 output transistors for unequaled damping and power delivery
  • Four transformers per amplifier, each DC filtered, sealed in machined housings, and potted in a proprietary epoxy for silent operation
  • Circuit boards are installed in aluminum mounting frames precisely machined to fit the board and sandwiched with a layer of damping material
  • Left and right amplifier chassis are mirror-imaged and feature multiple surface angles to break up any reflected sound
  • Differentially balanced, instrumentation-style input circuitry for ideal electrical interface with any preamplifier or source component

boulder-3050-mono-power-amplifier-3

Boulder 3050 mono power amplifier specifications

  • Peak power 8 OHMS: 2100W
  • Peak power 4 OHMS: 3000W
  • Peak power 2 OHMS: 6000W
  • THD 8 Ohms 1500W: 20-2 kHz: 0.0005%, 20 kHz: 0.0035%
  • THD 4 Ohms 1500W: 20-2 kHz: 0.0008%, 20 kHz: 0.0045%
  • THD 2 Ohms 1500W: 20-2 kHz: 0.0014%, 20 kHz: 0.0110%
  • Input impedance balanced: 200KΩ
  • Input impedance unbalanced: 100KΩ
  • Inputs: 3-pin balanced (XLR)
  • Output connectors: 2 sets of 6 mm / .250-inch wingscrews
  • Power requirements 220-240 VAC 50-60 Hz: 300W nominal, 6000W at maximum output

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Visit the Boulder 3050 mono power amplifier product page.

Tags: BoulderPower amplifiers
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Marco Lisi

Marco Lisi

Publisher

Marco Lisi is the publisher of Best of High End, part of AV Concepts BV. His path into audio started early: as a teenager he was drawn into the world of free radio, presenting shows and living immersed in music every day. In his early twenties he ran his own production studio for five years, creating jingles and commercials — hands-on training in sound design, pro-audio workflows, and critical listening through studio monitors that still shapes how he evaluates gear today. He also spent years DJing in clubs before moving into publishing, first at two earlier online magazines before founding Best of High End. His hi-fi and home cinema passion was inherited from his father, an inveterate system-swapper. Marco's first setup — a confirmation gift — paired AKAI separates with entry-level Bowers & Wilkins speakers, a brand he stayed loyal to for years as his system grew from stereo into full surround and home cinema. Like many enthusiasts, he went through an extended "audiophile" phase chasing the next upgrade, before settling into a more grounded view: gear as a means to enjoy music and film, not an end in itself. Years of critical listening have given him a well-trained ear — the ability to characterize a system or pinpoint a change in the chain quickly and accurately. Just as important, his teaching background (a Belgian "regent" degree in Dutch language) gives him the tools to translate those listening impressions into clear, readable writing.

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