Ex-movie theater projectionist Steve Guttenberg has also worked as a high-end audio salesman, and as a record producer. Steve reviewed audio products for CNET and worked as a freelance writer for ...

Having built a number of vacuum tube output transformer-less (OTL) amplifiers in recent years, it seemed as though it might be a good idea to try combining older with newer technology and using both ...

We have no intention of wading into the vacuum tube versus silicon debates audiophiles seem to thrive on. But we know a quality build when we see it, and this gorgeous tube preamp certainly looks like ...

Always hankered after a retro-chic McIntosh valve preamplifier and compatible power amp to match? Feast your eyes on this neat new duo. Despite style cues that nod to the firm's 1950s and 1960s design ...

In our surface-mount age, it’s easy to be jaded about miniaturization. We pretty much expect every circuit to be dimensionally optimized, something that’s easy to do when SMDs that rival grains of ...

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 Rogue Audio RP-9 is the latest flagship preamplifier from the ...

The amplifier project utilizes vacuum tubes on the preamplifier section to produce a push pull output stage while using point-to-point connections. Each of the tubes are consuming 940 mA of current ...

Always hankered after a retro-chic McIntosh valve preamplifier and compatible power amp to match? Feast your eyes on this neat new duo. Despite style cues that nod to the firm's 1950s and 1960s design ...