I find that upgrading at the factory is not as cost effective as buying the product in the used market. I've owned the LS16-MKII and it was sweet. I ran it into my Martin Logans via a VT100-MKIII Amp.
No complaints with this pre-amp. Just keep in mind it can be had in the used market for less than 2K before you spend a lot of money upgrading.
No complaints with this pre-amp. Just keep in mind it can be had in the used market for less than 2K before you spend a lot of money upgrading.