Happy 2025 to everyone!  There aren't nothing much to blog about after many years of research and development of various types of audio ...

It has been a while! We're still alive but have been busy with various industrial or corporate projects than consumer sales.  Why do we ...

Howdy everyone! Happy New Year 2022! Hope everyone is safe, healthy and wealthy!  A lot had happened, including COVID19 that visited us rece...

Greetings everyone.  Hope everyone is safe and sound. We all have been through hell, from Alpha to Delta, and now the almighty Omicron. We w...

J&K Ultra Isolation Transformer measured!  If you are looking for an isolation transformer, look no further. We are one of the very bes...

Sales! Sales! Sales! Clearing out storeroom. We will clear out storeroom once in a while and here's what we found idling.  Level 3, 50W ...

It has been quite some time since we update everyone on our J&K ultra isolation transformers. It has become better, and better, and bett...

Howdy everyone, We are very happy that we received a lot of praises on our Ultra Isolation Transformers and Ultra Isolation Power Transforme...

The best power transformer for audio has just gone even better! Our Level 3 Ultra Isolation Power Transformers design has just been improved...

Thanks to one of our great and frequent customer, this article is born. Before we start our lecture, take a look at this picture below of ...

People has been talking about the evil artifacts, such as, noises the active regulation brings, for example, those using a toroidal transfor...

Mids highs attenuator transformer - useful tool for final tuning of mids and tweeter to match listening room conditions, seating distance, a...

Hi guys, Merry Christmas and Happy New Year!  We've an important announcement to make. Western Electric cores are running low on t...

Autoformer Volume Control, or Transformer Volume Control We think that AVC, or TVC are one of the many great things that happened in audio...

For most of users out there, with usual modern loudspeakers, the efficiency normally falls around 90dB +/- 6dB. Such speakers require consid...