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Amplifier ranking
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Old 7th July 2010, 03:52 AM   #151
tinitus is offline tinitus  Europe
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Join Date: Nov 2005
Amplifier ranking
It sounds good, until you have heard a better one, as they wickedly say

Anyway, personally Im quite happy with just a minimum of quality
But to define that could be difficult
sometimes we know very little, and sometimes we know too much
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Old 11th June 2012, 05:36 AM   #152
JZatopa is offline JZatopa  United States
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Join Date: May 2003
Location: Chicago
I am curious to see how some of the early posters on this thread feel now almost 10 years later.
Knowledge is Power & Applied Knowledge is Freedom,
There is no higher religion than truth
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Old 13th June 2012, 01:36 AM   #153
audiostar is offline audiostar  United States
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Location: Honolulu
Where do the amps rank in 2012? SymAsym? Goldmund? SKA GB150? GB300? NAKSA100 ?
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Old 15th June 2012, 05:15 PM   #154
Jay is offline Jay  Indonesia
Join Date: Feb 2003
Location: Jakarta
Originally Posted by audiostar View Post
Where do the amps rank in 2012? SymAsym? Goldmund? SKA GB150? GB300? NAKSA100 ?
Amplifiers with balanced topology tends to be a winner, especially if the system is fully balanced.

From SKA simplified schematic, a latfet in CFP arrangement (even if the distortion is usually higher then EF) may have some cult followers. But from my experience, lacking drive, mosfet amps will sound boring. In a 3 stage amplifier with latfet CFP, the mosfet will not have sufficient drive to fulfill my taste.

Pass mosfet amplifiers have fanatic followers. You can live with any of Pass amp for a long time. Imo, one of the reason is because Pass amps have proper drive for the mosfet.

To build the best amp, parts especially the active ones, transistors, must also be the best. This is even truer when the topology play less role, such as in a single ended topology. Power JFETS is probably the best available, but only Pass amplifiers have it. I noticed also that Vladimirk has access to very good mosfet and power jfet.

To rank amplifiers, they are must be grouped, at least by power.

At 5W, I think Pass amp with its power JFET is the best. Haven't heard a F2J, but if it is times better than F2 then it must be good.

At 25W, again, I think Pass amp with its power JFET is the best. This has been proven in blind tests. My favorite (not necessarily the best) is my latest build, an AlephPJ with 2SK246 and 2SJ162, 5.5W (no schematic available).

At 50W-180W, my champion is a variation of TSSA (no schematic available).

At 200W and above, taste and knowledge (when building or matching with other components/speaker) is important, especially because high power class-B will not be perfect. My favorite goes to Goldmund, with selected parts.
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