How to connect both Headphone + Amp and 2.1 Speaker to one soundcard !?

[gh0st47]

As title said, I was wondering does anyone have any good solution on how to have both my Headphone and 2.1 Speakers connected to my soundcard ? 
I was thinking of using a 3.5mm jack Y-Splitter, but is that advisable ? Or will it affect my Headphone sound quality?
Also I maybe planning on getting an Amp for the headphone so Im thinking the connection be like. 


                                        Amp > Headphone 
Soundcard > Y-Splitter > 
                                         2.1 Speakers 


Another few more questions 
1) Should I actually get an Amp or DAC + Amp for my headphone since I someone told me that I've Soundcard and that will act as a DAC. Im better off with an Amp  
2) Will I able to connect my 2.1 Speaker to the Headphone Amp ? ( While the Amp connect directly to my Soundcard and use a Splitter to split connection for both Headphone and my 2.1 Speakers ) 
3) Any good budget Amp to introduce ( about 100 - 200$ USD ) ? Im still new to this, so I don't want to go too crazy, a Brand will suffice since there aren't many Brands and Models to choose from here, Im not from the US. I would want to get Schitt but I can't find here. Im thinking of getting a Sennheiser HD518 or HD558 or is there any good headphone you guys can recommend, I actually only listen to Metal, Rock, Industrial Electro ( Electro kind of music ) 

                               

 

[ProtegeManiac]

Does your soundcard have an SPDIF output? Get a DAC-headphone amp with the same kind of SPDIF input, so you hook up those up, and then keep the 2.1 speaker on the analogue output. Just go and manually select which output the soundcard will use.

 

Alternately you just look for a DAC-Headphone amp (single unit or combo) with a preamp output, then you just use a converter from its RCA output to the speaker. This isn't as necessary though because your speakers have their own volume control in a location that I assume is easy enough to reach (unlike powered studio monitors that have separate gain on each) side.

 

[PurpleAngel]

  As title said, I was wondering does anyone have any good solution on how to have both my Headphone and 2.1 Speakers connected to my soundcard ? 
I was thinking of using a 3.5mm jack Y-Splitter, but is that advisable ? Or will it affect my Headphone sound quality?
Also I maybe planning on getting an Amp for the headphone so Im thinking the connection be like. 
Amp > Headphone Sound card > Y-Splitter > 2.1 Speakers 
Another few more questions 
1) Should I actually get an Amp or DAC + Amp for my headphone since I someone told me that I've Sound card and that will act as a DAC. Im better off with an Amp  
2) Will I able to connect my 2.1 Speaker to the Headphone Amp ? ( While the Amp connect directly to my Sound card and use a Splitter to split connection for both Headphone and my 2.1 Speakers ) 
3) Any good budget Amp to introduce ( about 100 - 200$ USD ) ? Im still new to this, so I don't want to go too crazy, a Brand will suffice since there aren't many Brands and Models to choose from here, Im not from the US. I would want to get Schitt but I can't find here. I'm thinking of getting a Sennheiser HD518 or HD558 or is there any good headphone you guys can recommend, I actually only listen to Metal, Rock, Industrial Electro ( Electro kind of music )                               

 
Creative Labs Sound Blaster Z sound card or Asus Xonar Essence STX sound card.
Both come with with dedicated line-output for 2.0 or 2.1 speakers.
And a separate amplified jack for the headphones.

 

[gh0st47]

 

Does your soundcard have an SPDIF output? Get a DAC-headphone amp with the same kind of SPDIF input, so you hook up those up, and then keep the 2.1 speaker on the analogue output. Just go and manually select which output the soundcard will use.

 

Alternately you just look for a DAC-Headphone amp (single unit or combo) with a preamp output, then you just use a converter from its RCA output to the speaker. This isn't as necessary though because your speakers have their own volume control in a location that I assume is easy enough to reach (unlike powered studio monitors that have separate gain on each) side.

Im using a Xonar DG 5.1 Headphone Amp. 
It does have SPDIF actually, here's a picture link below. The Square Black Box right ?

http://imagescdn.tweaktown.com/content/3/5/3575_08.jpg

But I notice that this soundcard has a built-in headphone amp, is it ok that I output it to another headphone amp ?? 

I did tried finding a DAC with SPIDF, it's very rare ! 
Alot aren't even sold here specially like Schiit, well this is a hassle...maybe it won't work out....
Such a headache to just get a simple setup like so. Maybe just have to stick to " gaming " headset....zzz