Amp recommendation and setup advice please

If you have digital cable between satellite and DAC, you must go into the satellite menu settings and make sure that "Dolby Digital" is turned off or that you have set the sound to "stereo" mode. 

your comment about eliminating or minimizing the effect of interconnect, could you please elaborate? I own an ARC Ref6 and ARC Ref150se and I keep getting advice from certain dealers that I should upgrade my IC between the two. I will say this; I have four XLR IC's at my disposal at unless it's in my head, they do sound different! Does this mean my Ref6 is not good at it's job? My question is posed with nothing but earnest sincerity.

@fsonicsmith  The balanced line system has a set of standards which are in part there to eliminate noise and also to reduce cable interactions. This is why in the recording studio it unusual to see really expensive cables, simply because the differences are inaudible.

If the equipment does not support the balanced standard, then cable differences can be heard. Audio Research to the best of my knowledge has never supported the standard (also known as Audio Engineering Society file 48) but that is actually pretty common in high end audio.

The aspects that make the cable more audible are:
1) output impedance- if this is high, more cable artifacts (IOW the character of the cable) can be heard.
2) In the balanced standard, ground is ignored and is only used for shielding. In this way no ground currents pass through the shield of the cable. What this means is that the signal occurs between pin 2 and 3 of the XLR connection and floats with respect to ground.

In an ARC preamp and a number of others, the inverted and non-inverted signals do have their output with respect to ground  and not to each other. This causes the cable to become an audible portion of the overall system sound. One advantage of this is that either output can be used to drive an RCA connection just by hooking up the RCA connector. What this means is that such a setup is really just two single ended connections that are simply out of phase with each other, which is not actually how balanced line is supposed to work- its signal does have the two aspects out of phase with each other, but its not a pair of single-ended outputs. I hope I have explained this in a way that is easy to understand.

Sorry for my slow response- I only just now found your question.

@auxinput apologies for the delayed response, it was my sisters wedding weekend. 

I have the Audioquest Redriver interconnects (XLR) from Yamaha monitors to DAC, and Lifatec Toslink digital cable from DAC to Satellite. I also tried the digital cable into the TV and it’s the same as when plugged into the Satellite. 

I changed the sound settings on the Satellite to stereo, and I have the DAC gain set to low. There are 4 gain settings: low, full, high, and super high. I read that a low gain with higher volume will result in a more neutral sound. Is this true? I’m not sure which gain setting I should be using. 

I have played music via Bluetooth on the Satellite (from my iPhone) and the sound is what I expected - the bass is impressive considering there’s no subwoofer. However when watching TV and movies there’s almost no bass. 

Perhaps a subwoofer would make a difference and pick up the 20-80hz range? Also, I was thinking about adding in a centre speaker too. Would this be a good idea? 

Will the DAC be able to power everything if I added the sub and centre speaker? And does the DAC have the availability to output to these?

I was reading that speaker position is vital. My room is 7.5m by 3.5m (roughly), and the TV/speakers are against the long wall. I have the tweeters at ear level when seated, very close to the wall, angled in to the couch creating a triangle effect. The speakers are about 2.5m apart from each other. Any reccomendarions for improving the positioning?

the sub you mentioned is one I short listed but stretching the budget a little bit, especially if I am to buy a centre speaker. I was also looking at the Klipsch R-112SW. Is this a good one? Also, is it better to have two average subs or one really good one?