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Post new topic Power amp classification
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Author Topic:  Power amp classification
Ray DeVoe

 

From:
Hudson, FL
Post  Posted 26 Nov 2006 8:45 am    
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Hi all you electronic wizards.

What is the difference between a good old power amp and one labeled "pro reference" or just plain reference amp.

What I am comparing is the Stewart World 1.2 to the Stewart Pro Reference 1000 which there is one on Ebay right now.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ih=014&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=330053277213&rd=1&rd=1

Im just trying to find out the difference between these 2 type of amps.

Thanks
Ray DeVoe
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Eric Jaeger

 

From:
Oakland, California, USA
Post  Posted 27 Nov 2006 11:59 am    
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Marketing.
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Ray DeVoe

 

From:
Hudson, FL
Post  Posted 27 Nov 2006 5:17 pm    
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Hi Eric.

You are probably right.

I did have a technical type guy answer the same question from the E Bay side and he states that the reference amp is designed to add no tone coloration to the signal.

I guess I will keep right on using my heavy old Mosvalve 500 for now.

Thanks
Ray
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John Daugherty


From:
Rolla, Missouri, USA
Post  Posted 28 Nov 2006 5:45 am    
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Ray, you are correct. The term "reference amp" has been used to describe amps that make good playback amps for recording studios when used with "reference speakers".
Actually any power amp (without tone controls) should have a flat frequency response, but what you hear will depend on the frequency response of the speakers.

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Donny Hinson

 

From:
Glen Burnie, Md. U.S.A.
Post  Posted 28 Nov 2006 11:07 am    
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I think the "reference amp" would have a flatter response, and probably also have better components or design, yeilding a slightly better S/N ratio. For a pro-type studio, the ref amp might be a better choice. But for all other uses, the performance differences would be moot.
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Gareth Carthew


From:
West Sussex, UK
Post  Posted 28 Nov 2006 3:55 pm    
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Although a lower end "reference" amp can be less ideal than a better quality "other" power amp with the tone controls set to zero.

I'm afraid I don't know anything about the particular model you mentioned.

Also, it really depends on what you want it for.
When I was working in video I didn't bother with an expensive amp but instead used a half decent "HiFi" amp with tone set to null.
We also used it for our 16 track pro, home recording studio.
It did the job perfectly well.
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