The SME 3009 is a favourite o mine, especially the 3009 unimproved. Recently, a customer contacted us with a request: to rewire his belov...

From decades the Hi-Fi industry teaches the general public that distortion is bad. Following a simple line of thought, the industry is ri...

If you look at the LDR attenuators' proof of concept, it seems that build one is straightforward, and, since it is simple, they perform a...

Simple reasoning and practical tests, against the standard practice. Preface The life of an engineer is not simple; when it comes to buil...

As many of you know we produce high-end SUTs (Step Up Transformer) for MC cartridges. We put a lot of effort in our products, the compone...

Today the first listening test of our new prototype. What must I say? Despite the fact that condensers and tubes are not yet rolled in th...

The audio section of the Reference MM Phono Preamplifier is shaping up. Here you can see the input section with the Neutrik sockets, the ...

The CNC is now fully operational, here milling the case for the MM Phono Amp power supply unit.

Now, all our electronic devices come with a personal test card. Square waves, frequency response and THD/SNR for both channels.

We continue to work on the Phono Preamp, at this stage the first five exemplars of the tube power supplies are almost ready. here the 'na...

After a successful test of the prototype boards; it's time for drawing the final production boards.

Starting to program the micro controller and design the logic board. This will take a while.

Finally the board with Audio section, with all the electromechanical controls is ready (hope it works), next step the logic board and pro...

I started to prototype the new Passive Amplifier, here a sneak preview of the transformers with the relays array that will control all th...