Originally Posted by comfynumb
I did notice the Sunfire uses way too much power at idle a couple of years ago. I unplug mine and let it warm up at very low volumes for about 40 minutes before I gradually turn it up. Sounds dumb but I don't like that big draw at idle. I could pick out one or two or three statements made by the reviewers of any amp or product where they don't like it. Other than 6 moons there's a dedicated following for class D amplifiers, some are on a budget and others can afford the very best amps. I'm not happy with approximately 300 WPC going into my Revels and the THD that's introduced as I crank up the volume, I want the same volume when I turn it half way up so there's very little distortion going into them
I bought Sunfires because I wanted tons of power without owning a radianting anvil.
I understand your thinking and I feel the same way.
But the choice is not as simple as we would like. It is not just a matter of power ratings.
There are power ratings at 1KZ and power ratings 20hz to 20KHZ.
Some also feel that wide bandwidth is important. I am not so sure about that.
Outlaw and ATI make amps with excellent performance rated full band.
They rate them all channels driven as well.
With the ATI 3000 / Outlaw 7900 you have an amp that perform well above its specification.
These amps use lots of output devices so they do not drive them as hard.
They do not run very hot at all.
BTW, ICE like to talk about soft clipping.
That means no more bass at some level.
My friend had a Pioneer ICE receiver rated at 140 watts.
That amp should be within 1 DB of a 200 watt A/B amp.
Since the Elite receiver used a reference scale he was pushing it to -10 and it just wasn't giving any more of anything.
Compressions is not a good thing and it was evident even earlier.
He replaced it with a BDP105 driving two Outaw M2200 A/B/G monoblocks and at about 60 % volume you at at the limits of his 3-wat B&W's.
The sound is much more dynamic, detailed and clean. No more compression.
I am not saying Class D amps are not good or even the future.
I am saying that you have to be careful when they are not rated in the same stringent way.
As in LCD and Plasma, each technology has its benefits and they have there deficiencies which are very different.
Sort of like IMD is a class A/B problem but not a class A problem.
We know what Class-D is doing better, there may not be standardized measurements for what Class-D does worse because the problems do not occur in conventional amps.
I have done an in home trial comparing older models: Sunfire Cinema Grand, Outlaw 750, and D-Sonic 400 WPC ICE.
Even at that time, I was struck by the performance of the Outlaw and under-whelmed by the bass output/control of the D-Sonic.
There was also something I did not like about the sound of the ICE amp that I cannot put my finger on.
Recently, I sold my Sunfire 7400 and replaced it with an Outlaw 7500 which I also directly compared in my home.
Even though, the Sunfire has twice the rated power 400 WPC versus 200, the Outlaws sound cleaner at all volume levels and at very high volumes of over 100 DB, it presents a better defined sound and less compression.
I attribute that to linearity and lower distortion.
Were I getting close the to $3000 mark for an amp, I would go with an ATI or Outlaw 300WPC amp.
The folks at Outlaw said they have yet to find a speaker that can clip that amp and I am inclinded to agree with them.
In the end it comes down to your own preferences.
Some folks like linearity so much they prefer class-A or high-biased class-A. Nothing wrong with that.