Winner of The 2012 Absolute Sound Editor's Choice Award!Comments from Rogue
Vacuum tube audio amplifiers have long been recognized by the audio community as providing significantly better sonics than solid state transistor-based designs. Unfortunately, well designed vacuum tube products are much more expensive to produce than their solid state counterparts. As a result, this superior technology has only been available to a small but fortunate group of audio enthusiasts. Enter Rogue Audio.
Our amplifier designs combine the finest in tube-circuit topology with meticulously engineered circuit layout to achieve superior performance. Unflagging attention to the integrity of the audio signal path and power supplies results in truly superior designs. The most discriminating audiophile will delight in the impeccable fidelity of recordings reproduced through our amplifiers.
The matchless quality of Rogue amplifiers is obvious at first glance. However, Rogue’s quality is not just skin deep. Ultra-high tolerance components, two-ounce copper circuit boards, and silver plated switches are just a few of the many features which separate Rogue products from the competition. Our amplifiers have been designed to be extremely reliable. Electronic components are rated far beyond their intended use, and only the highest quality components are incorporated into our designs. The rugged aluminum chassis are treated to resist scratching and corrosion and the machined aluminum faceplate and knobs are anodized to protect their appearance.
At Rogue Audio, we believe that a truly great performing amplifier should dress the part. And from the heavy aluminum faceplate and knobs to the gold connectors in the rear, Rogue amplifiers speak to the audiophile’s aesthetic sense. Our expressive appearance is the brainchild of world class industrial designers who have created a perfect unity of form and function. The sophisticated styling and elegant lines of our amplifiers are intended to please the upscale tastes of high-end devotees.
High-end amplifiers typically command stratospheric prices. Rogue Audio was founded on the belief that great amplifiers can be designed and manufactured at affordable prices. Rogue products provide outstanding value with performance that rivals the very best amplifiers at any price. Our amplifiers are engineered using a quality-by-design philosophy, and every one of our components is hand assembled and tested by highly skilled technicians and engineers. The confidence we have in our products is evidenced by a generous warranty that is certain to please today’s quality-conscious consumer.Stereo 90 Details
Whether your tastes run to the delicate strains of the violin or the wail of the electric guitar, the Rogue Stereo 90 power amplifier will thrill you with its precision, musicality, and impact. And with 90 watts of pure tube power, you can be sure that your amplifier won’t run out of steam before the musicians do. The heart of the Stereo 90 consists of four matched KT88/6550 output tubes operating in push-pull configuration. A massive fully regulated power supply ensures that low frequency information will not go unheard, and that the power and attack of transient musical passages will be recreated in full. And with a simple flip of a switch, audiophiles can choose between "pure triode" and "ultra-linear" operation to suit their tastes and power requirements. The transparency and power of the Stereo 90 is testimony to a design that truly transcends that of the competition.
While the build quality is readily evidenced in the exquisitely sculpted appearance of the Stereo 90, the beauty of this amplifier is more than just skin deep. From the heavy-duty gold plated RCA inputs to the custom wound output transformers, the audio signal travels through only the finest components available. With this winning combination of leading edge circuit topology, great components, and a stunning appearance, you can be certain that you are investing in amplifier design that only Rogue Audio can deliver.Stereo 90 Super Magnum Upgrades:Hex Fred diodes in bias supply
Screen grid resistors upgraded
Polypropylene bypass capacitors in filters
Bypass coupling caps
PRP resitors in all critical spots
Cardas binding posts
Cardas RCA jacks (ST90 only)
Upgraded small signal tubes
KT90 output tubesUser Manual