I have owned both the BAT with the phono card option and the Modulus 3a. The Modulus is the hands down winner sonically, for both the line and phono stages. The BAT, of course is more feature laden and user friendly. The fly in the ointment with the AI is the stepped attenuators, one of the major reasons I sold mine. Nonetheles, my recommendation goes to the Modulus 3a.
Oz