I would suspect it is apples and a different color apple kind of comparision. I have the True Systems Precision 8. I bought it over the Grace M801 due to the difference in price. I absolutely love it and don't think that I traded down due to price. I don't think you can go wrong with either. If you just have to have to sqeekiest clean preamp out there then you might also look at the Martinsound MSS-10. It is considered by many to be as close to a straight wire pre as there is.