Hi Shuggie
Here is the link; I bought the unit directly from them and have no comparison with a standard model. However, I can say that I'm very impressed with the modded GCPH which should stand the test of time through cartridge changes as it's very flexible and sounded very good with the high output DL-160 as well as excellent with my current AT33PTG.
http://www.underwoodhifi.com/mod_psa...nchor-So-19901

