Downunder,
I'm not certain what Raul and Jose charge now as I've had mine for quite some time. Also I do know that they were talking about a remote control option but felt this was a major challenge as introducing the necessary components could have some minor impact on the perfection that the 3160 was designed to deliver. So although they were considering ways around this, I'm not certain if it is now available. For me, there's a joy in adjusting the volume manually and I really could use the exercise (well, 1.5 yards across my listening room);~) I think it would be worthwhile asking Raul about these developments directly.
Now that I have had the 3160 for a long time I am more certain of my opinion. I have changed so many bits of equipment and the truth is that the Essential keeps asking for more. On the cartridge front, I have the Allaerts MC2 Finish Gold, the Dynavector XV1s, Spectral MCR, Nagaoka MP-50, Music Maker 3, as well as various Empire and other old cartridges and everyone of them is clearly distinguishable and never challenges the ability of the Essential to portray all that they offer. It's the same on the various speakers, tuners, CDP's and tape decks that have passed through my system. So I guess I'm honestly lost to tell you of its weaknesses. Maybe some pieces of equipment will be able to test it but nothing that I know of, at least nothing that is currently available. I really do think that this phonolinepreamp is 'THE' state-of-the-art.
Having said all that, you do need to have an independent ground, remove all earth wires from all plugs and float your system through the Essential. I am proudly non-technical but I managed to do this myself. It just needed a length of decent earth wire and a six foot copper tube that you drive into the ground outside with the wire attached. Then lead the cable through a purpose drilled hole into your listening room and link this independent ground to the back of the Essential. The rest is: sit back and enjoy.