The circuit was designed to create a line preamplifier by acquiring the use of double triode tubes. The circuit comprises of three parts, the main preamplifier circuit with tubes, the input selector ...

The circuit has been designed for the purpose of creating a portable unit of preamplifier that would function as standalone control for gutitars. TL062 – a low power JFET dual operational amplifier ...

When most people think of tube circuits, the first thing that comes to mind is often the use of high-voltage power supplies. It wasn’t a given for tube circuits, though, as a range of low-voltage ...

Circuit boards for power supply circuits have different requirements than ones for gain stages. In the X s Preamp, each board is optimized for its specific use. Each of the X s Preamp’s two channels ...

Munich, Germany — Krell added to its selection of integrated amps here at the High End Munich show with the debut of the $3,500-suggested 2×200-watt Vanguard. The Vanguard features a fully balanced ...

Want engineering excellence? That's the promise of the all-new T+A P 3100 HV ('HV' stands for 'High Voltage'). If its solid aluminium chassis looks familiar, that's because the aesthetic design of the ...

Krell just announced their flagship Illusion and lower-cost Illusion II stereo preamplifiers. The $15,000 Illusion preamp separates the power supply from the audio circuitry, while the $7,000 Illusion ...