Is music mastered one way for CD and another for vinyl? And if sao, why? How about radio stations, iTunes, MP3? All these different formats sound different. Is it due to mastering?

High resolution audio is supposed to sound significantly better than standard 44.1 CDs, but does it? And if so, how much and why? Paul tackles this gnarly subject with a few insights and a way to perhaps understand it better.

Class D amplifiers have been around for many decades yet they haven't gotten much of a following in the high-end community. In fact, they are sometimes downright hated. Why is that?

We don't typically listen to stereo standing up, so how important is the chair and its height in a high end audio setup? Paul tackles this interesting question with an answer that might surprise you.

Is there are perfect volume setting designers strive for when designing a power amplifier? This customer finds that a lower volume setting doesn't sound as good as higher levels and he wonders why.

When you're on a limited hifi budget can you do better by investing your money in used equipment rather than new? This is an important question because new keeps up with technology while the older used equipment may or may not.

Tons of source equipment have both XLR and RCA outputs but very few preamps have more than one XLR input. Why is that? It just doesn't seem to make sense. Paul's jumps in with both feet on this one.

If your amp only has one set of outputs what's the best way to take advantage of bi-wire capabilities found on some speakers and how best to connect them?

There are big parts and small parts, medium ones and minuscule ones. Does it matter to sound quality? What are the differences between surface mount components and larger through-hole parts?

PS Audio manufactures products all over the world and at different voltages. How does the company manage to produce all the different voltages from the world at their facilities and do any of them sound different? Better? Worse?

As we get older our hearing changes but how? And do our brains learn how to compensate for those changes? Paul answers a frequently asked question from people his age.

If using a volume control affects the sound would it not make sense to have a lower power amplifier so you could turn the level up for better sound quality? Paul diffuses another mystery.