Class D Technology

The useful purpose of a custom input stage on most Icepower amps is to raise the input impedance  (10K to start with on older versions at least) to enable good performance with higher output impedance tube pre-amplifiers. Its a performance/integration enhancement not just there for "coloration". If pre-amp is lower output impedance SS there is no benefit at least on paper.

Benefits of improved power supply in any amplifier should be obvious.

The PS Audio amps are being built as a lower cost alternative to their higher priced fare.

     i Wonder which class D power module PS is  using in the Stellar monos?  I would think they'd be sharp enough to audition the newer Abletec and Pascal modules and compare them to the Ice and Hypex to use the best performer.  Anyone know?  Guido?

Thanks,
  Tim

Their literature says Class D ICE output stage and MOSFET input stage

What they call "Analog Cell" is just class A Mosfet input stage very common in many class A or AB amps.  It sounds like a lot of hot air (for class D).

Some sort of input buffer is almost always required to eliminate input offsets in the comparator and that sort of thing (which is also where most of the class D artifact actually arises). But this does sound like marketing.