Actually I use a 3875 amplifier. I'm going to switch to an F1J in the future most likely, but then again even though I got the PCB's, I just don't lack much to need the switch.
You seem to have a nice setup there. Tell me more about the amp...it looks interesting.
One comment though, not sure about teh granite. i hear it is the worst thing to use as it amplifies and conducts vibrations. I heard it better to use felt maps and they are way cheaper too!
I use a NAD c375BEE integrated (Modified by a Swiss company to has a small negative output impedance). Among other things, the mod makes the amp stable down to 1 ohm loads and maybe a bit less.
Sources are a modded Denon Universal DVD player, where the SPDIF signal is stolen form the chip leg and run direct to a new coax output, bypassing the sound killing long PCB taxes. I also have an Onkyo SACD player which uses a discrete output stage. I do have a slightly modded SqBox Duet receiver (caps upgrade) and fed by a purpose built power supply in the Lampizator Dac. Finally I have a McBook pro using an Empirical Audio Offramp 4 spdif converter...all feeding the Lampi Dac. I also have a DSPeaker room corrector/DAC/Preamp, but I have not put that in the chain yet.
Finally, I have a pair of Heil AMT Syrinx speakers and an 8 inch Energy stereo sub (single). I also have the baby Heil speakers (the Aulos) and Intend to run that series-parallel with the Syrinx on special occasion, using my vintage (US power) McIntosh 2125 power amp (120WPC into 8ohms)....I have a 600W rated transformer and the Mac will draw a maximum of 432W at peak.