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In Reply to: RE: What if... posted by E-Stat on September 27, 2015 at 10:41:18
I would definitely try it out! My adventure with single ended MOSFET output left me not completely satisfied (100 watt SE(T=Mosfet) hybrid...NAT Symbiosis SE) even though it was very very very good overall. Based on the SIT descriptions by Srajan (if those are in some way to be trusted...I have personal experience to doubt the man's reports) it would still miss some things but I will one day hopefully get to the hear the 10 watter.
If the SIT has a more linear transfer function than a MOSFET then I guess it has great potential...especially as it doesn't need another stage or output transformer.
You are right that they all try something getting some of the ideas in place but in the end they bow to the market desire for power and then go to push pull and or Class A/B...which ultimately screws up the harmonic distortion pattern.
Follow Ups:
they bow to the market desire for power and then go to push pull and or Class A/B
It's not the market that caused me to purchase a push-pull AB amp. It was the speakers. :)
I have never heard electrostats sound better than with top notch SETs...
.
Mine too, at least the more desireable models...
Forget WAVAC , Hypex fits your Budget, try 3 , you know you want to ...
ROFLMAO :)
Edits: 09/29/15
I actually have tried Hypex...UcD.
Morri , Attach some names to them bones , top Notch SET ..?
We've already been down this road, A. Wayne...no need to do it again...
Is this the "one" ...? JJ 322 parallel SET
Is this the one what? Yes, it is one of the amps I own. The others are a pair of Wall Audio M50s and the last is a Pure Sound A30 for the TV system.
There used to be a good review on the internet in Polish that had nice measurements but it seems to be now deactivated (it was from about 2000 or 2001). I wish now I had downloaded the .pdf and saved it. The amp makes it to 15 watts (in either 4 or 8 ohm tap when load is matched) with 1% THD. The frequency response was flat to 20Khz and down 3db at 35Khz. The harmonic pattern at 1 watt and 1Khz looks quite good as well with decreasing distortion with increasing harmonic number with nothing much beyond 6th.
A greek magazine has some basic measurements like THD and frequency response that agree with the Polish magazine.
The amp made a lot of noise in 2000, winning a major design award, but like all things time passes on and people tend to forget. It is a very good sounding amp, well designed and using very good parts...especially the output transformers. Is it SOTA? No, but it is getting close for reasonable money.
Ever heard Walcot ..? Audio Art in your neck of the woods is a dealer ...
Edits: 09/29/15 09/29/15
Never heard them but interestingly they use some form of POSITIVE feedback...supposedly great with electrostats but otherwise??? Plus, its push/pull...so you know...conceptually wrong.
Yeah but SET's as you know are conceptually wrong and cant drive bat poop, but some like them ... :)
I like what he has done with those Walcotts, no where to hear them thou, Audio Arts is in Switzerland are they still around..?
Edits: 09/30/15
I use amps to drive loudspeakers and you seem to use them to drive bat poop...I guess that goes a long way towards explaining our different points of view ;-).
No idea where Audio Arts is located...I know Switzerland is not big but it is not that small!
Hofwiesenstr.
267 CH-8050
Zürich Switzerland
Drive this with an SET .....
Edits: 09/30/15
I lived 10 years near that location (I lived in the same postcode) and I never heard of this company. I thought I knew all shops/manufacturers in my area so probably they have been out of business for a long time.
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