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Nagra’s $24,500 PREAMP II-S is considered one of the company’s more affordable preamps. That alone tells you exactly who this is for—and who it isn’t. That it also likely sounds superb is almost ...

Anaheim, California, January 22, 2026 — AEA Ribbon Microphones will debut the FC2, a two-channel tube preamplifier, at the 2026 NAMM Show. Designed in collaboration with analog designer Fred Forssell, ...

Abstract: In this paper, two kinds of the travelling wave tubes (TWTs) with multiple gap-groove folded-waveguides are investigated. In these kinds of tubes, the sheet electron beam passes through the ...

Abstract: A novel all-metal slow-wave structure (SWS), named the helical groove loaded staggered double grating (HGL-SDG), is studied in this article. By loading the conventional helical groove ...

You may have seen me write elsewhere that the Fender Princeton is, in my opinion, the best tube amp overall. It’s just the right size, it’s got the right amount of power to get incredible tube ...

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 repackages them ...

Audio projects have a long tradition at Elektor. 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 ...

The IR-D preamp pedal takes those Friedman's high-end amp sounds and puts them in a tube-driven pedal, with dual boosts, onboard IRs, MIDI control and effects loop When you purchase through links on ...