It’s often asked if a speaker’s impedance can be changed to better match the amplifier intended to drive it. Can this be done and, if it can, is it a good idea? What’;s involved and, for that matter, what is speaker impedance anyway?

What do all three of these iconic brands have in common? Jim McCullough. Jim is a pioneer in the audio industry, a man who helped elevate these brands from small-time companies to the prestigious heights they once achieved. Learn the stories of how the landmark high-end audio companies of Mark Levinson, Wadia, and Cello became as big and famous as they once were, and what happened to them in the end.

How much better is a dedicated CD transport than using a CD player’s digital output? It certainly would be a lot cheaper and more convenient to use a CD player for listening as well as sending digital to a DAC.

PS Audio is an American company so how do we test our products for use overseas in countries with 220 volts or higher? Do they sound the same when powered at these higher voltages and how does this all work so everything sounds the same in one country as in the next?

We always relate the term jitter to digital audio but what of the timing irregularities in vinyl like wow and flutter? And if we’re concerned about the one why not the other. While we’re on the subject which format has the best sound?

There are as many opinions on speakers and their implementation as there are stars in the sky. Do you get better sound from removing the bass from speakers before augmenting with a subwoofer or, should the subwoofer be used in addition to the bass already available on the speaker?

When it comes to building circuitry for high-end audio how much do the parts matter? Can the older, larger, through-hole parts compete with modern day tiny miracles called SMT? And, which is better?

Speakers come in all sorts of variety from dynamic cones, horns, to ribbons, plasmas, and electrostats. What makes these different from each other and in particular, the differences between planars and electrostats. HGow do they work? Paul explains all.

Humble Pie was one of the greatest live bands the world of rock and roll has ever known. It was a band that guitarist Peter Frampton called “The best band I was ever in”. This 1972 interview with Paul McGowan is a treasure pulled from the archives and filled with debauchery, music and a glimpse into the life and music of Steve Marriott.

Bi-wiring has a number of performance advantages if you know how to make the best of available choices. But can you use the same amp’s binding posts to feed both cables? And what types of cables are best for bass and for top end?