I have a new interest in hifi and it is in active speakers. It all started with the Hypex AS2.100 modules. These weren't perfect, but still impressed me with their tight, dynamic and clear sound.

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 ...

With Geoff's recent articles on turntables it's made me think a bit more about my analog setup. I've wondered if I might be able to squeeze some more out of my ...

Back in January 2010, I reviewed the P&S OPC271 OPTO-POTENTIOMETER, a volume control that used Light Dependent Resistors (LDR's) to control the volume level. To recap briefly, this allows us to do ...

The preamplifier is the device that has always attracted me, from a "circuitry" point of view. The main duty of a preamplifier is to raise the signal from a source's output level to an amplifier's ...

There are numerous, sometimes conflicting, theories on the best ways to keep LP records and replay stylii clean, but one thing everyone agrees on is that either or both must be kept clean to minimise ...

Many audio equipment manufacturers these days use operational amplifiers. Operational amplifiers are a simple solution for obtaining gain and low distortion. These devices cost pennies, though there ...

Forgive me because now we're going to have on of my rambling introductions. The DRT-1t is Dynavector's new flagship cartridge. Regular readers will know that I've reviewed and been a long term user of ...

I see all sorts in this game! After the fabulously individual design of the Virtue Sensation and Piano, came the much more conventional styling of the ONIX A55 amplifier, and CD10 CD player. I had ...

This is a long due review. The original reason was the review of other caps here on TNT. The review caused three types of reactions. First kind of reaction, and the largest for sure, was the request ...

If you have already read the cited review of the CNM Tower you should be familiar with the solutions used in this series of loudspeakers. Actually, the Compact is - more or less - a Tower with a ...

I have to say, that even before I got my hands on these speakers, I was very impressed by its design - especially the crossover-less drivers, time-aligned MTM profile, bass response down into the 30s ...