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Interestingly enough, I searched the forum reading reviews of the XPA-3 and XPA-5. Quite a few people can't hear a difference between the power amp and their existing kit - some of the people who initially made claims of big sonic improvements later realised their existing kit sounded the same...

Thank you very much for the explanation Irvrobinson! How would I know if my amplifier has anti-clipping circuitry? I have an Onkyo NR818 receiver. Excellent point. The problem with this type of test is that I probably will think a more powerful amp sounds better ... probably because it's...

Yes, but that begs the question. How would I figure that out? Again, if my amp isn't clipping and I don't notice anything unusual in the sound, does that mean my power requirements have been satiated? What else do I need to consider?

Okay, but if my amp is not clipping then my question is why would I not have enough power? Are you saying that regardless whether an amp is clipping or not, adding more power can be beneficial?

Irvrobinson, so if my receiver is not clipping then I have all the power I need at my listening levels? Adding more will serve no logical purpose?

Yeah but perhaps the difference you heard was due to the gain level differences between the UPA200 and the XPA-2. I think it also depends on volume level - if you are trying to replicate a full-on orchestra in your room then you'll probably need a hell of a lot more power for dynamic peaks. If...

So then I would be correct in saying that if my amplifier is not clipping at my particular SPL, whether it be 75 dB, or 85 dB, or X, then I have all the voltage and current required at my particular SPL? This is an interesting question for me because I think many audiophiles just assume bigger...

Hi there, People generally say that you need beefy amplifiers to drive low impedance loads. That AVRs can't handle low impedances, and that you need something with "balls". My question is, if you take two amplifiers, one, a poverty spec Onkyo (80 watts into 2 channels 8 ohms) and a Krell (600...

So Gene is the only one who can measure amps? He should teach Cliff how to do this for future reviews. Might be useful to have the extra know-how. :)

Why are there are no technical measurements? No test bench measurements on the available power? :confused:

Thanks for the explanation!

I have noticed a few published double blind tests that show people can't hear differences with cables. So a DBT is like a survey on what people experience?

Thanks, so blind testing is the answer. One day I must learn how to set one up in my own room.

Sheesh, you are paranoid. :confused:

Please, I don't want this to turn into a slinging match. I thought this question would be more relevant in this forum. I have no hidden agenda. I just wanted to ask the question and I don't appreciate you questioning my motives. What I am supposed to bring to the table? I'm not a scientist or...

I promise you, I'm not being insincere. I don't own high-end cable in my system and I certainly would never spend big bucks. I am skeptical of the differences, but I am curious to know if there is science that can explain it. Perhaps there isn't. I am interested to know what is or isn't possible.

I don't believe it. :) But is there a scientific reason for it? I see so much subjective talk about high-end cable making these kinds of changes, but I rarely see any technical discussions about these effects. Can it be proven that wire can't affect sound stage?

Hi, I have heard this claim from some people, that a cable can affect the width and depth of the sound stage. I don't understand this. I assume there are EE's on the forum, but is there a scientific principle that allows for this, some scientific proof that it *can* affect sound stage or is it...

Thanks guys for everything. Sorry again for being difficult earlier on in the discussion. I really do appreciate all the help and advice.

Thanks Peng. This is why this topic is confusing. Just when you think you know something ... you get conficting information and it ends up confusing you. Well it does for me, anyway. Some people tell me some things and other people say the exact opposite. I appreciate you confirming my...