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In Reply to: RE: Electrocompaniet: Some the best sounding SS gear out there posted by fantja on July 02, 2014 at 09:33:53
My EC 4.7 preamp was a leftover new item that came from The Music Room in Colorado, who got it from Axiom Audio (a major EC dealer in the area). Most of my EC gear came from the Music Room.
The below explanation goes a long way to understanding why EC gear sounds unique among solid state equipment. Normally, I take these things with a grain of salt, but in this case, believe this to be accurate:
"Traditionally, designers increased feedback to make a larger portion of the output signal control the amplifier’s response. Our listening tests showed us that simply applying more feedback was not the answer. In fact, as one kind of distortion went down, other parameters would be adversely affected, leading to an overall degradation of sound quality. We knew that the other conventional design approach of eliminating feedback completely was not the answer either, because this would cause high distortion levels, and as a result would produce a “woolly” sound.
The answer to the dilemma was found in a novel approach to feedback theory. We developed a feedback concept that allowed local feedback to be applied around individual stages of the amplifier circuit. This approach allowed us to avoid the sonic disadvantages of overall feedback from output to input. The concept was further developed to reduce phase and interphase distortion between stages of the amplifier as well. We were able to concentrate the loop feedback on the stages of the amplifier where it resulted in audible improvement.
Stability margins were also expanded because feedback no longer affected the frequency response. The use of this concept of individual gain blocks—complex in design but simple in function—allowed us to reduce distortion to minute values in all the products. The amplifier is divided into two separate sections or gain blocks. The input block is a transconductance amplifier without overall feedback. This avoids large output current being fed back to the input, and mixed with the minute input signal. The output block is a transresistance amplifier with parallel feedback. This is done to prevent higher frequencies than the feedback loop can handle from entering the loop. An approach like this will prevent Transient Intermodulation Distortion (TIM) and Slewing Induced Distortion (SID), eliminating the need for an extremely wide bandwidth.”
"What this country needs is a good 5 watt amplifier!" (Paul Klipsch)
Follow Ups:
Right On!
it is the simple matter of believing in one's brand of product(s).
I have to agree with Elizabeth. Bryston is the best plus it has a 20 year warranty.
I think Bryston's warranty is great, but sonically, Electrocompaniet sounds quite a bit better (IMHO). It does not exhibit any sonic harshness, and the low level detail is much more discernible with the EC gearAgain, I think it has to do with superior handling of transients.
"What this country needs is a good 5 watt amplifier!" (Paul Klipsch)
Freo-
whom makes the cd/dvd/Br drive(s) for this company?
I think they are Phillips sourced. They are a bit quirky, in that they are DVD drives, so reaction time to commands like open/close tray are a bit slow. I have tried a couple of music DVD's, and they do actually play.
EC also does a excellent job of isolating the disc mechanism from vibration.
"What this country needs is a good 5 watt amplifier!" (Paul Klipsch)
Hopefully the company has back stock drive(s) in their factory...
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