I think .6 mV is too high an output for the Loco. Sutherland phono stages are excellent, quiet, and if you get one with a LPS, even quieter. I have an Insight and it is excellent, although I haven't tried anything other than what came with my Plinius amp, which was supposed to be excellent. The Insight blew it away-lots of impedance and gain options. It works well with my VDH MC One Special cartridge. Ron Sutherland is of the mind set of set it and forget it. To change the settings, you have to take the shell off the unit, and it doesn't use cheap plastic slider switches, there are gold plated shunts that are taken out and reinserted to the desired setting. Definitely not for those that love to constantly experiment/tinker or like meters, lights or other decorative features. Very basic look - I like it. Doesn't even have an on/off switch. Simplicity and direct path design with nothing to add noise.