I'm using a Wavelength Audio Cotangent phono preamp. I also tried out the Audio Research PH-3 and the Sonice frontiers phono 1 and the Black Cube from lehmann and found the Wavelength to have a very engaging delivery. It is dynamic and very quiet for a tube unit. It sounds most like the AR but to my ears has a more toe tapping presentation with natural deep bass. I'm not sure Wavelength makes it anymore but it sold for $1000.00 Just my opinion of course.
JC
JC