Dear all, thank you for your opinions.
Smatsui,
My system is also tube base, ASL Hurricanes, Hovland Pre, Nola Viper sig. The Saturn is lovely for the vocal music with smooth and warmth sound. But when play Jazz, or classical, I think it could be more air, detailed sound, larger and deeper sound stage, and more transparency.
My friend also has HL5 with tube based system similar to your, and he prefers Music Hall 25.5 to Musical fidelity A5 as the later CDP gave too much warmth and thick sound in his system.
I am glade you to hear you found a good synergy with out high risks. I live in Thailand and no such try and trial offered. Hence, Audiogon thread is very useful for me.
By the way did you connect Dac1 directly to your Mac power amp? Any sonic benefits compared to connecting to CAT pre?
Have you ever had a chance to try Bel Canto Dac3?
Regards
Vichai