Recommend me a Class A Integrated Amp (or sound like Class A amp)

@andrei_nz , uh, I literally said that my speakers are Cabasse Riga on the first line of my post. Understandable though, when I went to the dealers and I mentioned about my speakers most did just go "ummm, what are those?" until I explained that it's a pair of high-end spherical coaxial satellites.

As I mentioned earlier, they are very easy to drive therefore I feel safe to limit my option to only Class As.

Plinius is definitely on my short list. For Perreaux, only 80i is available to purchase in my city. 

I guess I just want to buy more stuff or scratch that itch of wanting the best gear?

Anyway, I like my sound to be as realistic and pure as possible but still having a lot of liveliness and excitement. I listen to a lot of modern female vocals and classical music. 

Two speakers I'm considering in my upgrade path: Cabasse Baltic and Yamaha NS-3000. These speakers are balanced, neutral, and very fast.

Pass Labs stuff in my city are very expensive. Teac, Esoteric, Yamaha, and Plinius stuff are quite a bit more cheaper so I am heavily leaning towards these 4 brands. 

The only available brand new Luxman Class A left available to buy is a 595ASE and I don't think I want to pay the mark up for that. And I don't like the all buttons look anyway. I guess $8600 USD Esoteric F-03A seems like the best value; I checked the price of this in US and wow you guys are really getting the short end of the stick. 

I totally forgot about Krell and definitely is going to check it out. The highest end for Hautonga available here is Plinius Hautonga at around 3600 USD, but I guess I will give it a try anyway. 

Great suggestions from all of you. I am located in Singapore btw.

A dealer suggested to me I could actually get the entry level Accuphase Power Amp A-36 for $6500 USD and use the difference to upgrade my DAC to a DAC with a preamp like TEAC UD-701N ($2500 USD). That theoretically might give a better sonic upgrade compared to just getting an Esoteric F-03A.

Those who I have spoken to echoed the few comments earlier that I would probably see marginal improvement upgrading my amp since my Sony amp is considered as a superb amp almost comparable to the higher end Japanese brands. 

So I might decide to upgrade my DAC or speaker first. 

The Coda CSIB and the Krell K300i are available to demo in my city and I would try them out. 

Soulnote A2 and Yamaha AS3200 come highly recommended among my circle as well. 

I will be trying a TEAC UD-701 and AP0-701 stack soon with my speakers. I've heard it paired with a pair of Sonus Faber Lumina III and the speakers sounded much more expensive than they were. 

I try to keep an open mind. Thankfully my speakers are light enough to carry around easily. I will probably audition Luxman 509X and see whether it would be good for me.

I’ve heard the Teac stack I mentioned above yesterday and I was really surprised at the sound despite AP-701 being just a class D. Sound is clear, balanced, and sweet, but a little laid back, but it could be just the Sonus Faber Lumina’s characteristic. I will bring my Riga to to the dealer to investigate further. The stack is priced at $4600 USD and seems like really bang for the buck.