Amplifiers and stereo systems sound their best after they’ve been on fort some time and have warmed up. Why is this? Paul explains why.

With floor to ceiling speaker drivers how does the Infinity IRS V achieve ear-level tweeter directionality? It seems the IRS sounds the same regardless of seating height.

At age 64 is it too late to get a high end audio system? His ears aren’t what they used to be and the question is what’s going to bring the best musical pleasure at this later stage of the game.

Are watts of a Bryston amplifier the same as wattage from a B and W amplifier? And if so, why does one run hotter than the other?

There’s tons of great music available today so why is unamplified music seemingly the gold standard for reviewers? Why not include more?

The Infinity IRS V is one of the best loudspeaker systems in the world. Would it sound even better if PS Audio switched from solid state amplifiers to vacuum tube ones instead?

Electronics adds unwanted harmonics to music and so designers work hard at eliminating them. Yet, some harmonics are welcomed as rich additions.

It seems the typical pattern is for audiophiles to purchase expensive power conditioners only to then sell them later wishing they had never installed them.

There are many ways to acoustically treat a room but one of the best is called a diffuser. What are they and when should be used?

There are several technologies available to designers of subwoofers who wish to implement servo systems. What are they and how do they work?