I have owned the Sunrise II and sold it. I bought it used from another guy and though I think it sounds awesome I prefer more power and If I recall it pushes around 850mW at 50 ohms. Sure it works and the LCD2 sounds good on it but I have found that more power brings these cans to life. The Ember will push a solid 2 watts @ 50 ohms and up to 2.4 watts. This is much more pleasing to me. Plus tube rolling is super easy in the Ember with its auto bias. You can roll a butt load wide range of tubes. I bought The Ember I, & Ember II from Garage1217 directly. The Sunrise II I picked up used off ebay and I was provided the Polaris by Garage1217 because I had a table at CAMJAM a number of years ago and I hosted the Garage1217 partial line up. Afterwards he let me keep the Polaris for helping spread the word. I'll never sell my Polaris for that very reason. If you are on the fence about rolling tubes or which amp to get you might consider the Polaris. It is a SS amp but it shares a striking sound resemblance to the hybrid Ember II. It also has the power to push just about any set of cans out there. If you want a tube amp with power and you want to experience the joy of rolling tubes then the Ember is the way to go. I have a large tube collection and it is so much fun rolling tubes in that amp. Frans knows his stuff and Jeremy is one heck of a dude. Awesome customer service. I wouldn't mind owning another Ember. If they ever release the Ember III I would have to buy it. This time I would keep it. I regret selling both my Embers but damn...how many amps do I need? lol My review of the original Ember amp: https://www.head-fi.org/threads/project-ember-review.746221/ I'd like to add that the amp that replaced the Ember I was Bryston's BHA-1 and I was never satisfied with it so I sold it and bought an Ember II, now let me clarify...the Bryston is one awesome amp. But I soon discovered that tube amps are for me. I'm a tube nut and I don't think I'd buy another SS amp for headphones again. Nothing bad can be said of the Bryston though. Stellar amp for sure. The bottom line is if the Ember was placed in a proper enclosed case (like most amps) I would have it on my desk now. I loved the open design but keeping it clean became a issue for me. I hate dust and it would have to be taken apart and cleaned often.