The cathode current is only 0.15 mA, but the preamplifier delivers a 3.5x gain. There is more detail on his website. It would be interesting to subject this circuit to a full audio analysis and ...

There are no surprises among the parts. Other than in its slightly unusual power supply, there’s nothing at all remarkable about the preamplifier circuit. The 6J2 is wired as a triode ...

After a Youtuber repaired an expensive phono preamplifier on camera, the manufacturer had the video blocked. The shitstorm ...

All these attributes are in the new 303, which evolves the core circuit design of Quad’s innovative original but with up-to-date techniques and technologies. The new 33 preamp has a clean layout ...

The preamp also provides an equalization circuit for phonograph records (see phono preamp). In most stereo systems, the preamp and amp, along with an FM tuner, are packaged in one unit (see stereo ...

McIntosh Laboratory, Inc., possibly one of the oldest and most venerable names in U.S. hi-fi has announced the launch of its latest preamplifiers in the form of the C55 Solid State Preamplifier ...