Tone King has unveiled the Imperial Preamp, a “high-voltage tri-tube” preamp pedal that takes the tones of the Baltimore, Maryland high-end guitar amp brand’s Imperial MKII combo and ...

PrimaLuna EVO100 Tube Phono Preamplifier: The Technology Now ... diode tube per channel for the necessary rectification of the secondary AC voltage. This circuit includes an inrush current limiting ...

We’re also glad to see an onboard tube preamp with a 3.5mm AUX input ... Developed by legendary master circuit designer John Curl, the man behind the equally legendary Vendetta Research phono ...

This time, however, it’s not about a DIY project but a ready-made product that caught our attention and is sure to interest Elektor audiophiles: a stereo preamplifier with tubes and Bluetooth — all at ...

However, the design required a large circuit board, with each channel using a total of 20 transistors. "Before you start building the preamp, you have to decide which configuration you want to make," ...

The circuit is dual-mono and balanced from input to output. It’s why we find analogue outputs and inputs on the back panel, each in balanced XLR and single-ended RCA variants. Hard-wired digital ...

Both the C55 Solid State Preamplifier and C2800 Vacuum Tube Preamplifier feature an impressive 16 inputs, including 9 analog and 7 digital connections. Thanks to the inclusion of McIntosh’s DA2 ...

it described by Friedman “as a genuine preamp in every way”, and at the heart of its design lies a pair of 12ax7 tubes running at high voltage. And those tubes are not there to “warm up” a digital or ...

Figure 1 There are many approaches to building a low-noise preamplifier—such as this one based on a JFET—but the schematic is only a starting point. Source: Texas Instruments Of course, as with many ...

The preamp circuit is pretty simple, being a two-stage single-ended design using both halves of the tube. Between the two is a three-band tone control circuit as used in classic guitar amplifiers ...

They’re therefore commonly referred to as in-line preamps; you’ll also sometimes see them called ... We created a novel hybrid circuit that consists of low noise JFETs and a hand-selected ‘new old ...