@soix. Right now I'm trying to get a baseline for listening and maybe potentially adopting a class D amp in one of my 2 systems. So right now I'm listening to the S300 see if their are any major omissions. With the Quad 99 pre and Dynaudio Emit 30 speakers, the PS audio s300 seems to have 2 omissions for me.
One is that layered instruments and vocals are not always fully audible and flushed out. For example, on artists/music that I know well such as Alison Krauss, you'll completely lose something like a brush drum stick or vocal backgrounds. When I say completely, this is mostly barely audible especially when you know the instrument/vocal is there.
The second issue and it could just be me getting used to Class D is that a lot of familiar songs are less interesting or somewhat dull to what I know they can be. When I'm listening to a song that has no instrument or vocals emission, I do note that it sounds good but also somewhat dull.
Nonetheless, I'm enjoying my time with the s300. Before trying a Rogue preamp, I'm going to try an experiment this weekend with the LTA MZ2 which can function as a preamp.
@jbuhl thanks for the additional notes on the, RP-1 and RH-5. Just yesterday a RH-5 came up on the TMR.