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Why is there no love for Prima Luna?

I have noticed fairly negative comments on Prima Luna in various discussions. Granted, I’ve never heard their gear but they seem to offer quite a value proposition. Point to point wiring, auto bias, protection circuits, easy tube rolling, good parts and build quality. I had considered looking into the Evo series integrated but the brand seems to be downplayed on this forum. Anyone have direct experience as to why?
cincyhound

Showing 2 responses by georgehifi

georgehifi's avatar
georgehifi
10,312 posts
 
I can understand some buyers' reluctance to purchase Chinese made products
This really goes for their output transformers very much so.
 I posted up on page two a graph where the output transformer rings like a bell in the vhf this can sometimes be band-aid fixed (settled a little) by using a **** load of feedback, but doing that is not good.

 Because global feedback is not a good thing and should only be used in small doses as a clean up tool, better off to use local feedback anyway, but that would not have an effect on curing this vhf output ringing.   

Cheers George 
georgehifi's avatar
georgehifi
10,312 posts
 
Why is there no love for Prima Luna?

Think I said it once before when I saw this, because this model’s output rings like a bell in the ultrasonic and it’s frequency response into 4ohms a simulated quite easy speaker load is + - 5dB across 20hz-20khz (black trace) indicating a very coloured sounding amplifier .
https://www.stereophile.com/images/1116PLPPfig02.jpg

And here’s the ultra sonic ringing superimposing itself on a 10k square wave,
https://www.stereophile.com/images/1116PLPPfig03.jpg
 "almost" looks as bad as a Class-D sawtooth ringing on a test square wave, unfiltered by the test gear. https://ibb.co/p2c64HL

Cheers George
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