Mancub1 - just wondering from your last post "what kind of music system you are trying to build"? A home Theater add on amplifier or a two-channel stereo rig? On the one hand, you had mentioned sacd playback and later described many speakers of different types and brands paired with a home Theater receiver? Are you trying to build a nice sounding two-channel audio system with an integrated amp (such as the Parasound Halo integrated) or a build an audio system with power amp for your Infinty Sigma speakers? If you are augmenting your Home Theater system I can suggest that your HT system can be improved by using like speakers/brands with the same drivers for tonal coherence. As it stands now, you have Infinity, Def Tech, Canton and Magnepan. Not trying to criticize but these speakers are presenting different loads to your receiver and when listening to a movie with a particular sound (maybe a helicopter flying by) the sound will change as it moves from one speaker type to another.
If you are looking at a dedicated music system your choice of the Parasound is a good one for a versatile integrated amp. You can add a digital front end, such as a music streamer or CD player, and add an analog component, such as a turntable. The Parasound has an ample power supply too. The DAC in the Parasound is very good, the phono section is very good and the headphone section is top notch. If you are only interested in going digital and are not adding a turntable, you can find a really good amp and add a music server with a good built in DAC. I am running a Parasound A21 and have connected a Bluesound Node 2 as a preamp/processor directly without the need of a preamp. Sound is clear, neutral and powerful enough to drive most speakers. I have hundreds of hi-resolution files/albums on an external hard drive which can be accessed by the Node 2 and I can play Spotify or Tidal via my IPad or IPhone as my stereo controller. You could try the MQA files on Tidal which sound terrific.
