34 thoughts on “ A 3.3 V Tube Preamp Without An Inverter ” Doug Coulter says: February 8, 2020 at 6:32 am Transcription issue – it’s the _plate_ current that is .15 ma. I checked ...

My main tube preamp and amp are rated at 0.08% and 0.5% respectively, and I can’t hear any more distortion with them versus my main solid state setup rated at 0.005% per component.

The preamp design utilizes four tubes, two 6C45s and two 6922s. The stock tubes sounded fine, but I couldn't resist experimenting with a few other tubes to see how they changed the sound.

Tone King Imperial Preamp: this high-end all-tube preamp pedal offers two channels, includes reverb, tremolo and attenuation, and has onboard CabSims/IR tech. Image 2 of 3.

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 ...

So the good news is you get most of the best parts of tube sound with tube preamps, but be prepared to pay handsomely as they typically start around $1,500. That's why I'm so excited about this ...

The C8 Vacuum Tube Preamplifier offers a compact footprint, powered by those four green-glowing 12AX7a valves housed in protective (and striking) cages. McIntosh says the C8 is all about flexibility ...

Tubes: Some preamps work with bulb-looking lamps known as tubes. These create a rounder, fuller, warmer sound, but are typically way more expensive when it’s a real authentic one.

Mark O’Brien has designed another great preamp that is competitive in the results and price comparisons to other choices in the marketplace that utilizes the nicknamed Russian military super tube.

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 ...

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.

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 ...