What is this "sub out" of which you speak? In my world, one acquires and accumulates (gear for audio, astronomy, photography; books, animal beds, garden plants) until the walls explode or a larger accommodation is found.
Seriously, the Gumby utterly
smokes destroys every D/S DAC I've tried and is the best I've heard by far. I recall reading way back that Jason preferred the Gumby to Yggy for headphones (at the time), and mine is in my headphone stack. While I'm in no rush to get one after the vehicle purchase and with planned renos, I'm eyeing a YGGY sometime for the big basement system.