Opus88, Presently I have the Aesthetix Calypso and Rhea (phono). I find them to be a great pair synergistically and they have a wonderful knack for reproducing involved acoustic classical music. I am extremely pleased with the performance even compared side by side to the Aesthetix Callisto Signature and Io in a living room setting. Let me be clear though, so as not to have the audiophile police come knocking on my door here. Ultimately they are not comparable in sound stage size and nuance in a cost be damned situation. Yet, the Calypso and Rhea have all the essential caricature and balance of their huge dollar brethren. They are two of the finest balanced components I have ever listened to and are loaded with versatility and have excellent casework. The Rhea (phono) leaves me wanting for very little, if any. I would highly recommend it for your listening. For an ultimate sound beyond reproach head for the Callisto Signature and Io. You will be amazed.
On the issue of comparison between the First Sound Presence Deluxe Mk.II and the Aesthetix Calypso, I cannot speak. Both are dual mono construction and both have stepped resistor volume controls with the consideration that the FSPDII has duals. All that is good but takes no precedence to your ears. I have heard nothing but stellar review of the FSPDII. Good luck, you certainly have your work cut out for you and are looking at a beautifully sound future. Enjoy!