Rogue Audio M250 Ultra Monoblock Amplifier: 250W Tube Power, KT88, Triode & Ultra-Linear Modes

Rogue Audio has launched the M250 Ultra, a mono tube power amplifier capable of delivering 250 watts. That is not just a lot of watts, but also elegant and refined watts, and the listener experiences seemingly boundless dynamics.

Elegant and refined, yet immensely powerful—that is the brief summary of the new flagship monoblock amplifiers from US-based Rogue Audio . The M250 Ultra's ability to reveal the finest musical details while simultaneously offering seemingly boundless dynamics is the hallmark of the best amplifiers the manufacturer claims to have ever produced. Also read our review of the Rogue Audio Sphinx 3 .

That these pure tube amplifiers deliver a continuous power of more than 250 Watts is only a small part of the story. The M250 Ultra is designed and built without compromise and features a perfectly flat frequency response, enormous bandwidth, a gigantic dynamic range, and negligibly low distortion. The massive linear power supplies make it possible to reproduce musical transients, even far above the amplifier's nominal power.

The M-250 Ultra features a unique and tasteful appearance thanks to the CNC-machined aluminium front and side panels. The ultra-precise electronic components and massive transformers contribute to the unparalleled build quality. The amplifier is equipped with a switch that allows you to choose between triode and ultra-linear operation. A built-in meter and individual bias switches make setting up the tubes a breeze, even for the novice tube amplifier user. The rear panel features balanced and unbalanced inputs, as well as Cardas speaker terminals for 4 and 8 Ohms.