I have been off for some years, had to cope with health and family issues, and after I had Corona, it rather stayed than went away, so Post-Covid took me three years ago. It was just last October, ...

One of the joys of vinyl is that it appeals to those who like to fiddle about with their hi-fi to get the best sound. Anyone who has a long term interest in the medium will be well aware how changes ...

The above schematic comprises almost anything you can put around the ubiquitous LM317 positive 3-pin regulator (LM337 for negative voltages, 117 and 137 military versions). The basic circuit dispenses ...

First of all, by digital cable I will mean an interconnect cable between CD transport (or CD/DVD player used as pure transport) and an external D/A converter (DAC). The DAC can be a completely ...

Whenever I visit audio shows, or hear new systems in other places, there are certain things that will always catch my ear. Full range drivers often appeal to me because of their directness and sweet, ...

How many times have we spoken about WAF, complaining about our mates' skepticism for our favourite game? Now it's just the "wife" who felt in love for those beautiful post-modern sculptures by Audio ...

motor assembly force product divided by moving mass multiplied by effective cone area (SI units obviously) flux density B multiplied by coil-in-gap length L divided by (cone plus former plus ...

This is a variation of a simple shunt regulator design that has been floating around on the net. It is a unity-gain (thanks to the feedback through C1) amplifier that consists of gain-element Q1 and ...

Molti di noi, attraverso gli anni, hanno ascoltato degli amplificatori, spesso di alto costo, che gli hanno fatto venir voglia di possederli. Più spesso che non, due aspetti hanno attirato la nostra ...

Fashions come and go and that's as true of hi-fi as any other part of our lives. When recorded sound was first invented, the sound was amplified by horns until somebody invented the moving coil type ...

In the first installment of this series we had a look at the noise generated at the output of a number of easy to build and cheap voltage regulators: single-chip series and shunt regs (LM317/337 and ...

This test has been written down after a sooo loooong period of extensive listenings at home. In the meanwhile I've changed something into my reference system: for example a brand new DNM Reson Reca ...