Here is a one-of-a-kind unit using a re-purposed Thordarson transformer. IT works great, and the vintage Shurite (made in New…
Above: a Marantz 7 stereo phono stage built for stand-alone use. See this link for an earlier build of this…
Many of my regular readers will be familiar with the Shure Level-Loc. For those unfamiliar, the basics: the Level-Loc is…
Sometime in the past couple of years, Tape Op ran a short piece by Allen Farmelo titled "Using Transformers to…
Above, a recently completed piece. It is built on one of two identical NOS cabinets that I pulled from a…
Despite the hectic nature of the holiday-season, I am inevitably able to produce one piece each year as a gift…
Above: The BRDCSTR, a two-stage vacuum-tube microphone preamp inspired by classic 1940s broadcast audio preamps. Single-ended design with a 6SJ7…
My latest microphone preamp design is completed and sounding very cool... The Old '76. The Old '76 is a novel…
This design project began with the goal of crafting an entire amplifier that echoed the form of a vacuum tube…
For my non-technical readers: a phono preamp is a device which does two basic things: 1) it equalizes the program…