I have to agree on AHT, myself having the next down from the Nonsignature, called High Resolution, with the same external power supply. I have in effect built a high quality stepped attenuator into mine, and with its 66 db of gain--and it can be raised even higher than that, if necessary--no active preamp is needed, and the sound beats BY FAR the CAT SL-1 III that I had before. I can't recommend too highly that bypassing of an active preamp. It saves a cable and its associated connectors, among other things, and "simpler is better" if you can get away with it, as the AHT phono preamps definitely can. The Nonsignature described in the previous post sounds like a unit to die for, and to live with forever, with no thought of being less than satisfied.