audiojan OP
I’m thinking the preamp might be the weak link at this point... Today I’m using a Pass X0.2 preamp.
I would go direct, as it’s the most transparent, dynamic way with no coloration distortions from any preamp.
You can connect direct to the XA-60.5 using "balanced" interconnect.
And the PSA DirectStream Sr has nearly 3v output!! and Pass XA only needs 1.1v for full wattage output, as you can see you have too much gain already!! without adding even more from an active preamp as well.
From PS AudioCheers George
PS Audio DirectStream Sr Resolution perfect volume and balance controlsDesigner Smith perfected a 100% bit-perfect volume and balance control that’s built into DirectStream, enabling users to control the output level when feeding directly into a power amplifier.
That the volume control is completely bit-perfect means there is no loss of resolution for any volume setting, a feature unique amongst the majority of DACS in the world today.
NB: The ability to eliminate the preamplifier in the system without any resolution loss is a major benefit to DirectStream’s outstanding musical performance.