I have heard the iBias designs but not the XD ones.
They are more musical - not tube like though - but I felt they gave up a lot of the bass slam that Krell was famous for.
I am guessing the XD upgrade is similar to the FPB c to FPB cx upgrade.
I remember the old Stereophile cover comparing a Cary to a Krell KSA series amp in the 90’s. They depicted the Krell as being polar opposites to a tube amp. I think they revisited the story a few months ago with current equivalents.
Throughout the years I have heard marketing hyperbole about how this particular solid state or Class D amp sounds like a tube amp. People also say that about the d'Agostino amps - but again that wasn't my impression. I have never heard a solid state amp that sounds tube like - even the very costly FM Acoustics ones. They may sound musical in their own way but not tube like.
They are more musical - not tube like though - but I felt they gave up a lot of the bass slam that Krell was famous for.
I am guessing the XD upgrade is similar to the FPB c to FPB cx upgrade.
I remember the old Stereophile cover comparing a Cary to a Krell KSA series amp in the 90’s. They depicted the Krell as being polar opposites to a tube amp. I think they revisited the story a few months ago with current equivalents.
Throughout the years I have heard marketing hyperbole about how this particular solid state or Class D amp sounds like a tube amp. People also say that about the d'Agostino amps - but again that wasn't my impression. I have never heard a solid state amp that sounds tube like - even the very costly FM Acoustics ones. They may sound musical in their own way but not tube like.