Hi, I use the Herron with a Clearaudio Sigma cartridge but instead of a preamp I use a seperate transformer volume control. The Herron has plenty of output without needing a seperate step up transformer . The transformer volume controller does provide 2x gain and allows me to convert from a single ended input to a psuedo balanced XLR output. This is very helpfull with driving my 6 meter interconnect between the volume control and amps. With a good set of NOS tubes this phono stage has been one of my best purchases here on Audiogon. Highly recommended.