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Question about Class A

So I read all the time how awesome Class A Amps/Integrated's (SS and Tube) are.

I currently have a Vincent SV-500 Hybrid and feel it sounds really good.

But I have this itch now to hear what Class A would sound like and would it be a big difference to my current Vincent.

I wanted to ask what are some good Class A Integrated's that I could look into?

I know Pass Labs always comes up and for good reason but those might be a bit out of my budget.

I would say I can probably go to $3K new or used.

Sugden is another brand that I have researched a lot and the A21 retails for around $2500 and there is a dealer in Socal that carries it, so that one is tempting.

Vincent has the SV-237 MK II but I think that is only Class A for the 1st 10 watts into 8-ohms and I have 4-ohm speakers so I am not sure if that would give me any Class A magic. I am sure it would sound similar to my SV-500 but have more base extension.

Could you all recommend any other one's? I have been researching but haven't come across any (SS or Tube).

Thanks

128x128jay73
twoleftears's avatar
twoleftears
5,313 posts
 

Better to look for something used and go up the Sugden line a bit.

mitch2
3,697 posts
 

IME, in addition to higher heat and lower efficiency, there are also sonic trade-offs between Class A and Class AB amplification. After extended living with both, IMO it is not so much about one being better than another but more about selecting the type of amplification that sounds best with the types of music you listen to and with your specific speakers. Class A amplification can sound organic and natural (likely due to the absence of switching between A/B) but, at least in my experience, the trade-off can be a loss of dynamics or pure grunt compared to Class AB amplifiers of the same power rating. However, I wouldn’t get too hung up on the class of amplification since a good sounding amplifier is a good sounding amplifier regardless of class so it is more about what works best with your speakers and the music you listen to.

jay73's avatar
jay73 OP
219 posts
 

The Speakers that I have are Martin Logan Motion 40’s and they are rated at 92db sensitivity.

With the Vincent, I think they sound great.

From what I have read and watched, 92db should be sensitive enough for lower wattage amps but I am realistic, I know with some lower wattage amps and Class A, I may get beautiful mid-range but lack in the bass department a bit.

But I am not hung up on huge bass so maybe wouldn’t be a big deal.

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rbertalotto
137 posts
 

I have three Class A amplifiers....A Yamaha M45 that is both Class A and Class A/B with the push of a switch, A Tubes4HiFi ST120 Dynaco clone Tube Amplifier and a Pass Labs First Watt F5v2.....Here is what I hear... The tube amplifier is magnificent. Easily the best sounding amp to my ears in my room with my speakers (KEF LS50 Metas or Magnapan MMG).....Try as I may, I can’t really hear any difference with the Yamaha M45 either in A or A/B.....The First Watt sounds like the tube amplifier. Fast tight bass, great midrange/vocals....Just one heck of a great sounding amplifier......BUT, Does it sound better than an ADCOM 555 or a Sound Artist SA200ia? ..... Not sure....There are so many great sounding amplifiers out there...Both past and present vintage.

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