"head" amps??

dynavector has a well respected one, i think i saw it for sale here recently.

I use both passive (Mitch Cotter MKII "pickup transformer")
and active (Sota "head amplifier") and much pefer
the transformer. I'm using a 0.4mV Benz Micro Gold MC.
There are numerous used active and passive devices out there and it's worth it to try a few to get the best sound
to suit your system/room.
You can always sell the ones that didn't suit you.

You might also check out the excellent discussion and
recommendations at:
http://www.high-endaudio.com/RC-Step-ups.html

Thanks to all for the input. Tjbearman, I am familiar with Arthur's recommendations having bought my first "serious" turntable from him in the late seventies. Unfortunately most of the units on his list are not readily available. At this point, the EAR MC-3 would appeal as the most flexible unit. Thanks again.

Ken