Fet Valve 400R and 600R Hybrid Power Amplifiers, our very best ever!
By far the most important innovation is our capability now to offer you the world's only high powered audio amplifiers with pure analog, high current, high power, high speed regulated output circuit power supplies. Only with the new Fet Valve 400R and 600R do the output power supply rails sit solid as a rock, unvarying at all between idle and clipping under all musical demands.
Only now when the music signal says "do it" can you hear an amplifier that actually "does it" rather than one that "almost" does it as the supply rails sag and vary under load. The "rubber" is gone, the dynamics and transients are astonishing, and the clarity, without edge or grain or glare, is pure. For good reason "R" stands for regulated output supplies, and for reality and right too.
Not only do the output circuits have regulated power supplies, each 12AT7 tube has three independent regulated power supplies, one for each plate, a third for the filament. The high power, high current power mos-fet in the output driver patented transimpedance amplifier also has a separate regulated power supply. There are ten regulated power supplies in all, five for each channel. You have never experienced an amplifier with these capabilities before, and when you do, nothing else will suffice.
The Fet Valve R series amplifiers are clear, pure, transparent, with even wider musical range and dynamics than the Insight series, with the addition of the ability to capture the spirit and emotions of the music like nothing else, and weed out the nasties at the same time. It appears that there really is something that a vacuum tube can do, when used properly, that makes all the work worthwhile.
For anyone loving real acoustic live music, our new hybrid vacuum tube designs are the best possible choice. They can only be compared with live, and unless the live is very good (and performed without electronic sound reinforcement) our patented Fet Valve designs will actually give you better sound at home than you hear at the performance.
The Fet Valve amplifiers are our highest expression of hybrid design, blending the best of vacuum tube and solid-state technologies. All of the basic design concepts are uniquely ours with sixteen allowed patent claims. We design and build these lush, wonderfully transparent, and outrageously dynamic amplifiers to satisfy those who have never been satisfied with solid-state alone. The sound stage is life-sized and the performers are real.
Our hybrid vacuum tube design sounds so real because it lets the individual gain parts each work in optimum environments. Vacuum tubes are great at manipulating voltages - you can play with 200+ volt signals where transistors would go up in smoke and flames. So, we use vacuum tubes for all voltage manipulations. Vacuum tubes, however, cannot drive difficult loads. They have very limited output current and get in big trouble trying to drive feedback loops, stray internal capacitances, and connection cables. So, we don't let our tubes see any loads at all. They operate in an idealized mode amplifying voltages only, and do it perfectly.
Power mos-fets are super current amplifiers. They can control great gobs of current without stress, and when properly selected and used, they perform without needing external compensation, thermal tracking circuits, or VI limiting and protect circuits. So we use all power mos-fets for current-amplification duties. There is simply no roughness or compression in Fet Valve amplifiers.
Our power supply features a huge high current shielded toroid power transformer and regulated 12 volt heater supplies for the vacuum tubes. The amps are dead quiet and play music from a deep black background. You will love them, satisfaction guaranteed, in writing!