Rogue Audio M-250 Ultra Monoblock Amplifier

The Rogue Audio M-250 Ultra is a pure tube monoblock amplifier and the new flagship of Rogue Audio's amplifier lineup. A worthy successor to the Apollo Dark, the M-250 Ultra combines a continuous power output of over 250 watts with ruler-flat frequency response, tremendous bandwidth, and vanishingly low distortion. Like every Rogue Audio product, the M-250 Ultra is designed and hand-built in Brodheadsville, Pennsylvania.

Key Features of the Rogue Audio M-250 Ultra

• Monoblock design: Dedicated amplifier per channel for perfect channel separation and zero crosstalk
• Massive linear power supply: Enormous high-storage linear power supplies enable the reproduction of musical transients far beyond the amplifier's rated output
• Ultra-high performance transformers: Ultra-high tolerance components and huge transformers contribute to peerless build quality
• Tube complement: 6x KT88, 2x 12AU7, and 1x 12AX7 tubes per amplifier
• Built-in bias meters: Individual bias switches and a built-in meter make tube biasing straightforward, even for tube newcomers
• Triode/ultralinear switching: On-the-fly switch lets you select either Triode or Ultralinear operation to tailor the sonic character to your speakers and preferences
• Balanced and single-ended inputs: Both XLR (balanced) and RCA (single-ended) connections for flexibility across system configurations
• 4 and 8 ohm binding posts: Heavy-duty rhodium-plated binding posts with multiple impedance taps for optimal speaker matching
• Rhodium-plated connectors: Heavy-duty rhodium-plated RCA connectors and binding posts throughout
• All precision components: Every unit is fully tested, burned-in, and auditioned before shipping
• Made in USA: Entirely designed and built at the Rogue Audio facility in Brodheadsville, Pennsylvania

Power and Finesse in Equal Measure

That these pure tube amplifiers deliver a continuous power output of over 250 watts is but a small part of the story. The M-250 Ultra was designed and engineered without compromise. The enormous linear power supplies enable the reproduction of musical transients at far beyond the amplifier's rated output, giving the M-250 Ultra the headroom to handle demanding passages and difficult speaker loads with authority. Whether your passion is jazz, rock, or symphonic works, the M-250 Ultra provides the clarity and dynamics to closely rival the original performance.

A New Chapter for Rogue Monoblocks

The M-250 Ultra represents a bold design departure for Rogue Audio. Where the Apollo monoblocks featured the brand's familiar rectangular chassis, the M-250 Ultra adopts a compact cube form factor with clean, modern lines. The CNC-machined brushed aluminum enclosure houses the tubes beneath a recessed viewing window on top, creating a striking visual presence that is distinctly different from anything Rogue has built before. The overall build quality reflects Rogue's continued investment in American manufacturing.

Explore the Full Rogue Audio Monoblock Lineup

The M-250 Ultra joins Rogue Audio's monoblock amplifier range alongside two currently available models:

• Rogue Audio M-180 Monoblocks – 180 watts per channel in ultralinear mode, with KT120 output tubes and Rogue's proven monoblock platform
• Rogue Audio DragoN Monoblock Amplifiers – Rogue's hybrid monoblock design combining a tube input stage with a MOSFET output stage for 300+ watts of power

The Listening Room Difference

We're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on trust, not hype. We've carried Rogue Audio for years because their products deliver real value and hold up over time. Every component is designed and built in Pennsylvania, and we're proud to support a manufacturer that shares our commitment to quality. Whether you're visiting in person or ordering online, we bring decades of experience, personalized service, and honest guidance to every interaction.

Rogue Audio M-250 Ultra Specifications