Hope you didn't sell away your asus stu dac. What combination of op amps did you use on the asus stu?
It sounds more or less identical to a SACD PLAYER YAMAHA Axxxx. I compared it in the showroom back to back.
Still a gem costs less than 300$US inclusive of op amps changing.
Just curious anyone knows anything about the Emotive Stealth DC-1 pre amp?