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Elk
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Musical Fidelity 550k Supercharger

Has anyone actually played with this new beastie? Other thoughts?

Musical Fidelity asserts that most systems are underpowered and that the resulting lack of headroom is a serious deficiency.

From their website:

"Roughly speaking, most systems are about 10dB deficient in their dynamic range capability. Our magnificent new product, the 550K Supercharger, increases the dynamic range of most systems by about 10dB or more."

It is an amp that you put between the output of your current amp and speakers. The claim is that it does not change the sound of your amp, but simply provides that much more dynamic headroom. They explain that the 550K Supercharger uses their kW550 power amp circuit in a low gain configuration.

Too me, this begs the question of why not just buy a bigger amp?, especially since this critter is very expensive.

I also want to know if it makes the characteristic supercharger gear or belt whine.

I will hunt down and seriously hurt anyone that dares mention AVA equipment in this thread. Don't even think about it.

wkhanna
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Re: Musical Fidelity 550k Supercharger

I have only read the PR stuff. No one I know quite gets the purpose of this thing.
Seems counter to MF's normal approach..........Is that newt urine I smell?

smejias
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Re: Musical Fidelity 550k Supercharger


Quote:
Has anyone actually played with this new beastie? Other thoughts?

Michael Fremer's review will appear in our September issue.

Elk
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Re: Musical Fidelity 550k Supercharger

Fun! Thanks, Stephen.

Monty
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Re: Musical Fidelity 550k Supercharger


Quote:
The claim is that it does not change the sound of your amp, but simply provides that much more dynamic headroom.

I'm not inclined to buy into that one.

Colnmary
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Re: Musical Fidelity 550k Supercharger

I understand Hi-Fi News September edition has review also, and its online at MF.

Elk
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Re: Musical Fidelity 550k Supercharger


Quote:

Quote:
The claim is that it does not change the sound of your amp, but simply provides that much more dynamic headroom.

I'm not inclined to buy into that one.

I'm with you.

I saw the review that Colin mentions prior to making my initial post. Ken Kessler states that the sound of his Quad amp is retained, except for some hardening in the treble. This is better than I would have guessed.

If this amp can really do the job of straight wire with gain then we should all buy the 550kw that this critter is based on as we would get pure reproduction of our source through this amp. While a very nice amp, I didn't get the impression from anyone that the kw is quite this magical.

wkhanna
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Re: Musical Fidelity 550k Supercharger


Quote:
No one I know quite gets the purpose of this thing.

Monty
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Re: Musical Fidelity 550k Supercharger

If Kessler says it's the real deal then I have to change my predisposition. The thing may be what it is claimed given the small changes that any cable will introduce.

I haven't read the piece yet, but I'll try to later this evening. Is this the "breakthrough" component that MF was supposed to be working on and that Stephen blogged about several months ago?

Elk
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Re: Musical Fidelity 550k Supercharger

Agreed. If K.K. finds it this impressive I am intrigued. But I am still skeptical.

Maybe Stephen will tell us if this is the breakthrough . . .

smejias
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Re: Musical Fidelity 550k Supercharger


Quote:
Is this the "breakthrough" component that MF was supposed to be working on and that Stephen blogged about several months ago?

Yep, it's the same component. I haven't heard it, but I figured it was worth mentioning on the blog, since several people seemed intrigued. I can't give anything away, but I hope that you'll find Mikey's review interesting, also.

Buddha
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Re: Musical Fidelity 550k Supercharger

This sounds familiar.

I seem to recall that back in the late 70's, Pioneer had a car unit that had a "turbo" button that would do the same thing.

It was like adding an "eleven" setting to your car system. When you really wanted to rock out...you know, take it to a level that REALLY rocked...you could hit the "turbo" button and it would kick your sound up that last notch. It was great for "Radar Love," "Smoke on the water," and "Rocky Mountain Way," as I recall.

I'll try to find pics. It was one of the models with the big round radio dial on the bottom left of the unit.

I wonder if Mu Fi has considered this for automotive use.

I'll try to find a pic.

Maybe Mu Fi can bring back that seat shaker bass thing, too!

cyclebrain
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Re: Musical Fidelity 550k Supercharger

No big deal to drive a power amp with another power amp instead of driving it with a preamp.
Both methods have a constant voltage source interface.
A low source impedence driving a higher load impedence.
All that it requires is the correct gain design.
Is a major waste of the driving amplifiers power supply current.
Reminds me of the old CB linear amplifiers.

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