Very late reply but I am demo-ing the Aesthetix Romulus in my system now.
I am no techie and know nothing about the circuit topologies of either unit, but the Romulus is good enough that I would seriously consider replacing my current CD player (AMR CD-77) with it. Both players use tubes in some configuration. Both have a USB input, along with SE and balanced connections. That fact that the Romulus is less expensive is a bonus, I guess. The Pandora is about $1000 cheaper than the Romulus if you have no silver discs to spin.
What changed: mostly the width and depth of the soundstage well beyond the one presented by the AMR-77 and then the Romulus also solidified the placement of instruments within the soundstage on even so-so recordings. I hate to sound cliche and use the descriptor "holographic" but that's really the difference it brought. It wasn't subtle. My definitely non-audio girlfriend noticed (and approved) immediately.
It did need a good 40-50 hours to break in and stabilize, but that's hardly in Audio Research territory for break in. For reference: my 2 channel system is Maggie 3.7s with an ASR Emitter 2 Blue amp, wired with Nordost Frey cables throughout, and an iMac playing Pure Music software so it's a fast and fairly neutral system, but it's definitely not a "theater in the round" type . The Romulus added that extra dimension to this, without losing the other positives in the system. It just seems very synergistic with this set up and my room.
I have not heard the Debussy, other than in a local showroom, and while it is undoubtedly a high end piece, I was very unfamiliar with the surrounding equipment (mostly Goldmund electronics and Kharma speakers) and could not determine how it would fit in my system. To be honest, I was not wowed by the Romulus in the showroom either, so there is obviously great value in auditioning in your system if possible.
Best of luck.