Entries by kevinc

New Interstage Transformers Designed for Single-Ended Amplifiers

Lundahl Transformers has quietly introduced a series of new transformers that were designed specifically for SE use as interstage transformers. While the LL1660, LL1692A, and LL1671 have been great transformers in my hands and in those of many others, there was performance to be gained by designing new transformers whose winding geometry has been optimized […]

Audio Transformer Basics 101

We’ve added a new series of reference documents under the “Transformers” menu heading, labeled “Transformer Basics 101”.  These articles were developed and authored for Lundahl Transformers by a well-known pro audio designer, Ken DeLoria.  These provide an excellent introduction to audio transformers:  rationale for use, applications examples, construction/manufacturing, and a bit of transformer theory and […]

Amplifier Input Stage and Power Supply Kits

These kits are now all in stock ready to go.  They make amplifier construction using the output stage of your choice straightforward and sonically rewarding.  A few early adopters have already built PP amps using the interstage transformer input stage and a variety of output tubes, including PP 6C33C and PP KT150 tubes.  Pictures and […]

New Products for April 2015

As some of you know, I’ve been developing a number of new products over the past year or so and many of them are ready or nearly ready for release.  Here is a synopsis of the products pending the full release of information in the relevant website pages: Trio Phono Preamplifier Kit – The intro […]