integrated watts or amp watts


Most "Stereophile recommended" integrated amps only have a rating of about 50-70 watts (creek, exposure, croft, arcam). Others like the Anthem and NAD have more, but separates (amp+pre-amp) seem to have more watts. I was told that for a budget of $1500 for this, I'd get the best bang for the buck with integrated vs seperates. The question I have is 2 fold..
1) Does Stereophile only "recommend" these lower powered integrateds because they're the ones with phono stages (which I don't care about)?

2) To have a really dynamic accurate loud system do I need gobs of power assuming the speaker is in the avg. 8ohm range with avg. 91db efficiency (not an electrostat, etc)
How much money do I need to spend? Is a 70 watt integrated only good for a small bedroom system, and separates needed to rock towers and the whole house? Just curious.
labguy

Showing 1 response by jmcgrogan2

First of all, forget about Stereophile's recommended components. Glossy rags are basically just advertisements. They promote the products of those companies that pay them to promote their products.

Second, yes in the $1500 range (and much higher), integrated amps are the way to go, IMHO. It also saves you money on cables and power cords (don't ask).

Third, in regards to power, you have to understand that power is logarithmic function. It takes 10 times the power to double the sound pressure levels. That means that a 200 watt amp will play twice as loud as a 20 watt amp. In most rooms, at most levels, for most people, you will not need gobs of power for a speaker of 8 ohms and 91 dB sensitivity. In a small room you may even be happy with a 10-20 wpc amp. A larger room, or tastes for louder music may require 100 wpc or more. The larger the room, the more energy it will take to fill it.

An example: My room is 25 X 15 X 9, my speakers are rated at 90db and a 5 ohm load. My 85 wpc integrated amp plays plenty loud enough for me. Now I do not rock out at 100 dB+ levels, if you do, maybe you will need more power. I play it loud enough to drive the wife nuts though. ;^)

Cheers,
John