Class G amplification...any good ?

jahjahlove

jahjahlove

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Arcam and jbl synthesis will be selling new class G amplifiers in juanuary...has anyone heard a class G amp? Is it any good?
 
I think Naim is class G. I’ll see if I find the link.
 
I can speak from experience that the NAIM Supernait 3 sounds outstanding. Big and meaty. It sounds very up front, great, tight bass, beautiful mids, and a nice open airy-ness in the top end. I rated it a close second to the Gryphon Diablo 300 in sound, along with the Pass Labs int 60. Not that they sound alike. They don't. But they're all among the finest sounding amps made. IMHO, you'd have to spend considerably more to find better sounding amps than these three. Just for the record, I'm purchasing the Gryphon Diablo 300 soon but I could be very contented with any of these three amps. My ears just have a slight preference for the D300.
 
Bob Cordell writes that Class G & H amplifiers change the rail voltages of Class AB amplifiers as the volume changes.
see page 110 of his book "Designing Audio Power Amplifiers" (first edition).
 
Mike said:
As in GGGRRRREAT!


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Click to expand...

really ? no kidding ?

i am referring to the JBL synthesis SDA-2200 and the Arcam P49 (not new, sorry, even more, it s discontinued...), namely.
I am reading that the JBL is just a rebadging of the arcam ? is it correct ?
prices are reasonable either, so....
 
Last edited:
bluegrassphile said:
I can speak from experience that the NAIM Supernait 3 sounds outstanding. Big and meaty. It sounds very up front, great, tight bass, beautiful mids, and a nice open airy-ness in the top end. I rated it a close second to the Gryphon Diablo 300 in sound, along with the Pass Labs int 60. Not that they sound alike. They don't. But they're all among the finest sounding amps made. IMHO, you'd have to spend considerably more to find better sounding amps than these three. Just for the record, I'm purchasing the Gryphon Diablo 300 soon but I could be very contented with any of these three amps. My ears just have a slight preference for the D300.
Click to expand...

thanks for this short review... as always my concern were with the bass .... apparently class G does some bass as opposed to class D...
 
jahjahlove said:
really ? no kidding ?

i am referring to the JBL synthesis SDA-2200 and the Arcam P49, namely.
I am reading that the JBL is just a rebadging of the arcam ? is it correct ?
prices are reasonable either, so....
Click to expand...

NAIM is wonderful. We’re loaded up on wonderful NAIM gear in the store because it pairs great with every box speaker. But NAIM is some tweaky ass stuff. Not for the faint of heart and it’s a system play. You won’t use a NAIM amp with a Pass preamp for example. It’s all NAIM - from the source on down to even the cables. Only variance is the speakers and be prepared for some tweaky stuff, but in the end, totally worth it. You’re rewarded with great sound in spades. Your toes will be a tapping.


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Naim amps are not class G, Arcam and some Creek amps use Class G, Naim use Class A/B amplification.
 
Nataraja said:
Naim amps are not class G, Arcam and some Creek amps use Class G, Naim use Class A/B amplification.
Click to expand...

oops..; i didn't check... trusted el chefe on that.....

so basically no real direct long experience with class G her ?

the spoted amps for now is the arcam PA240.... https://www.arcam.co.uk/products,HDA,Power-Amplifier,PA240.htm
I was wondering if indeed the first 50 W were sonding like sweet class A....
It is supposed to come anyhow in France so I think i ll give it a try ....
 
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