Need help finding DAC/AMP combo that I can incorporate into my dual pc streaming setup

[DaCrazyCageMan]

Hey everyone I really need help
I'm currently using a dual pc setup for live streaming, although I want to integrate a DAC & Amp to replace the sound card (as I've heard going with this can give you much better quality, just like using proper headphones does instead of "gaming headsets", this will allow me to get the full potential out of my headphones, only I currently have a mixer (to connect sound from both pc's, also provides pass through for mic on my gaming pc) and an audio interface (which gives my mic the best quality on my streaming pc), this was already a complex setup to figure out and for my limited knowledge in DAC's (wouldn't even know if I should get a USB version or not), I'm going to need help as I am unsure about how they are even connected, I don't know if I want to get the DAC & amp as 1 part or if its better to get them as separate parts, I just want a way to have my headphones amplified but still have it connected to the mixer in order for me to hear both PC's, with my current sound card (Asus Xonar D1) I have a 3.5mm jack connected to line 5 on my mixer (so I can hear the audio) I also have my mic coming from the mixer's mic line and going into my sound cards 3.5mm mic slot. Can anyone please suggest a DAC/AMP combo which will give me good sound and be able to connect with my current setup for under £150.
Any help here would be greatly appreciated!
I haven't done a detailed rundown or diagram as to how I have my setup connected yet as I haven't had time to do so yet, but if anyone requires it, I will try and get it done asap.
Many Thanks!
 
Mixer: Behringer Xenyx 1204 USB
Audio Interface: Focusrite Scarlett 2i2 USB
Headphones: Sennheiser HD598
Sound Card: Asus Xonar D1

 

[PleasantSounds]

I'm not sure if you can improve your setup much on your budget. The concern I would have is that whatever gains may be achieved by the external DAC, your mixer is likely to wipe them out. But if you want to give it a go, here's one of the ways how to set it up.
Your mixer has analog inputs. If you want to use a DAC, it has to go between the PC and the mixer. This means you need 2 DACS. You can use the 2i2 as one of them, and use the mixer's digital output to feed the mic signal back to the PC.
To use a headphone amp, you would connect it to the mixer's analog output. This means that a standalone amp is all you need (no DAC).
In fact, I'd recommend to start with the amp only and see if you get any expected benefits. Then you can also compare output directly from a PC vs. through your 2i2 - and decide if a second DAC will help.

 

[DaCrazyCageMan]

Thanks for your response.
I currently use the scarlett 2i2 only as a mic for the streaming pc, I use the aux send on the mixer to send my mic through the scarlett and into the streaming pc via usb (this way I achieve the very good mic quality on my stream), I have the 2nd aux slot connecting to my main pc's mic slot, the audio is a little worse but that's completely fine as it's just for ingame voice and still great quality for speaking to friends, its also the only way I have found to speak on both pc's without purchasing another mic.
So really the mixer is only being used to plug my headphones into so I can hear both pc's on separate lines and to send my mic to both pc's.
I've really had zero luck with the outputs on the back of the mixer, for me now this is a great setup the way it is, however if there's a slightly different way of doing it just out of my knowledge so I can achieve a better audio playback experience then I will probably be willing to give it a try.
I kind of get what your saying, but I think it's unachievable with the current setup I have, I have also heard that my HD598's don't benefit too much from using an amp, as they are low powered enough that a normal sound card can get fairly decent quality out of the anyway.
I'm kind of unsure on how much I will be able to benefit from a DAC/AMP or if it's worth the price, but after reading a little more and seeing prices I'm pretty content with what I have (maybe if I had experienced a revolutionary high end setup, my opinion would probably be different).
I'll have a little think about it and keep reading up on this stuff though.