The preamp circuit is pretty simple, being a two-stage single-ended design using both halves of the tube.

The preamp revealed more soundstage depth, while solid-state preamps sounded dimensionally flatter. Whether the depth was a "distortion" created by the tubes I can't say for sure, but I liked the ...

If you’ve ever worked with vacuum tubes, you’ll probably have a healthy appreciation for high voltage power supplies. These components require higher potentials to get those electrons m… ...

Years ago, intrigued by the hype around NOS tubes and the promise that they could magically transform my amps into tonal bliss, I invested in a stash of pricey NOS 12AX7 preamp tubes just to see what ...

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 ...

Stylish 19-Tube Preamp Ingeniously Lets Users Select Input Tubes For Each Audio Source; Only One in the World to Do So Einstein Audio Components, a leading German designer and manufacturer of premium ...

Getting the best sound out of a tube preamp really depends on the type of speakers used too, while they also require more upkeep and maintenance, as the tubes sometimes need to be replaced.

A "normal" preamp tube left, and Freya's 6SN7 tube right Steve Guttenberg/CNET Those four tubes gracing Freya's topside aren't just any tube mind you, Freya uses my favorite preamp type, the 6SN7 ...

The latest high-end preamplifier from classic audio brand McIntosh brings together old-school vacuum-tube technology and the very latest digital processing. The C2700 is an audiophile’s dream.

The Rogue Audio RP-9 tube preamplifier sets a very high standard in the category but is it worth the high asking price? Indeed it is.

The McIntosh C8 Vacuum Tube Preamplifier is priced at £4295 ($3500, AU$6995). The McIntosh MC830 Solid State Amplifier costs £4995 ($4000, AU$8,495), bringing your tidy total to £9290 for both – but ...

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 ...