I'm using the Ares II with speakers. There's no need to use HP for me. You can skip to the last paragraph if you don't care.
I just upgraded my amp for my new Magnepan 0.7's. I was using an Amp60 and I moved up to the AMP-150.
The former brand Audience.Cn (€300) and the latter a Gato from Danmark (€4500). Yeah ok I bought it 2ndH for €3000. It's an upgrade that is worthwhile yet not earthshattering. It has very much the same character, it's just a little better at everything. Exactly what I was looking for and what I hoped for. It doesn't mean the Gato isn't good, it's mindblowingly good.
When I was looking for the Maggie's I read everywhere it needs big solid capable powerful amps, the bigger the better. Then I went to listen to the new (in EU!) LRS+ and it sounded just great, with my own 40W amp with a tiny bit of stress at high levels. I asked for the Nuprime AMG combo (class D with class A pre-amp stage) but that sounded super fast verging on strident. Then I listened to the 0.7 and the Nuprime bit the dust. No synergy. My little 40W@8-70W@4ohm translinear current amp however did impossible things. Yeah the VU-meter was imitating a windscreen wiper in a rainstorm, but man... Bass, speed, mids of honey, and space! It had no right sounding this good. Absolute synergy. FYI I played Infected Mushroom - Army of Musrooms LOUD. That struck out the Nuprime for my 'ultimate' list.
I enjoyed the 0.7 but that nagging notion... N e e d... more... pow e r... So I was saving up and reading up. I like the Steve Huff photo & Hifi channel. I really liked the Billie Amp. Then recently he reviewed the Gato DIA-400s all-in-one digital amp. I just loved it. So did he. He answered my question in the comments how it compared to the Billie 2 amp. I had some hesitation about ice-modules. And class-D, since vinyl is my mainstay. So I found the first model the Amp-150 which is all analog. I have no need for digital inputs (pcm1793 iirc however well implemented).
The Maggie's sound great now. But that 'power hungry' story baffles me. It's simply bogus. I tried a infineon Merus class D and it sounds just great. HOWEVER. The crossover is sub-parr. It limits detail, air and sense of 3D. My self-made 1½ way, dipole fullrange +AMT supertweeter give me more transparency and depth, more pinpoint imaging. Especially with vinyl I'm missing a lot of that extra 'realness'. The Maggie's make cable quality a non topic because the filter just erases all micro detail.
So, back on-topic. I have a much more refined amp now. Beyond all doubt. So I can judge differences better. I still enjoy the Ares II. Using the Rose rs250 as source to USB.
I was listening to some classical music: Stravinsky - Sacre du Printemps by Aenima Eterna- Teodor Currentzis. Sense of space is just eerie. It is so exact, so defined. I could just hear the space, the walls, the size. This hall isn't huge. Not like the Concertgebouw of where the Berliner Philharmoniker play.
I also player Eddy Reader, a Scottish singer (Fairground Attraction). She sounds beautiful. So clear and detailed. So smooth and lovely. I remember the reviewer in Hifi News & RR long ago, saying: "I'd marry the woman just to hear her sing in the shower". This makes you believe it.