[ThePhoenix924S]

I have owned an Audinst HUD-mx1 DAC/ amp for around a year now, I'm happy with it but I need a new amplifier that I plan to pair with a dedicated DAC that has an optical input so that I may use my PlayStation 3/ Xbox 360 video game consoles with my headphones.
 
My headphones are Sennheiser HD650s, and I listen mainly to soundtracks and classical music. I do not have or need a "proper" stereo system, so I use them for all my audio needs, which is 85% music, 10% films/ television, and 5% gaming.
 
I would like an amplifier for around $300 that is known to pair well with these popular headphones.  Also, I would prefer to order something from a company  that is known to be reliable both in quality and customer service (shipping, device problems, etc.). It does not have to be balanced, but if it is I am not opposed to it.  Also, I would find it very useful for it to have two headphone outputs, as there are times where my roommate and I watch a film at the same time.
 
I have not decided a DAC to pair with said amplifier, so if it is a combination DAC/ amp then that is fine. My total budget is $600, but I can likely stretch that a bit if necessary.
 
Thank you very much for any help you can provide.

 

[ThePhoenix924S]

Bumped - I edited the initial post with revised preferences.  I realise that there are many threads of this nature but it seems that most of them recommend so wildly that I find it difficult to match up with what I'm looking for.

 

[ThePhoenix924S]

I've found references that the Headroom Micro DAC and Micro AMP are good.  While they are a little over budget, will this be a significant increase in quality over my Audinst?  Also, the obvious question is are they the best choice for me?

 

[ThePhoenix924S]

Well, I think I have decided to forget about finding a decent DAC for my price range, but am still potentially interested in an amp around $500 that I would connect to my Audinst's DAC.  Would the Schiit Lyr be an appropriate upgrade or should I stretch my budget for a Woo Audio model?