How Much Power is Enough?

I have in-efficient Aerials and recently upgraded from 125wpc Linn to 350wpc Levinson and the difference was staggering.

The extra power (and current capacity) tightened up the bass and improved everything else along with it. Micro-details, slam, punch, etc....

I truly think that you cannot have enough clean power.

I'd see if you could borrow a higher powered amp and see for yourself. I think you will be very pleased at what more power can give (the more current the better).

With 87dB with one watt at one meter sensitivity, you will need a little more than one watt if 87dB is the loudest sound you want, or a four watt amp for a maximum of 93dB, or a 16 watt amp for a maximum of 99dB, or a 64 watt amp for a maximum of 105dB, or a 256 watt amp for a maximum of 111dB. The formula for this is quadrupling the power will double the loudness (which is the same as adding 6dB). To be more precise, use a Radio Shack dB meter to measure the loudness of your speaker at three feet. Increase the volume until it is at a steady 80dB. Then step back to your listening distance and see how much it drops. You will have to compensate for that in your final calculation. The level probably won't drop too much.

Personally I have Klipschorn speakers with a sensitivity of 104dB/watt/meter. My 125 watt amp will produce about 125dB which is twice the threshold of pain. I have to attenuate the preamp 20dB so a quarter turn on the volume knob won't drive me out of the room.

Would having more power make much of a difference?

No. Not for what you describe.

I'm looking for an amplifier that will bring about a wide soundstage, tighter bass, and exceptional smooth execution of mirco-detail.

-have you considered room modal problems/acoustic reflectivity?

-perhaps the tube pre might be giving you a little too much bass punch

Elvick, you're a little mistaken with your calculations. you mean 3db not 10db. 10db= twice the loudness.

Your speaker are probably some of the best. From what I know, PMC's demand fairly high power to get the most of out them. I'd suggest you contact PMC, get the name of one of their reps and pose this question to them. Of course, your dealer may have the answer too, although they might be anxious to sell something they have. Your on the right track though. Seems like the only way to have speakers like those is to power them correctly.
OBWANKANOBEE