Zhihenth

I just recently bought the Sennheiser G4me Zero headset and when I plugged it in to my ASUS Z97 Sabertooth Mark S motherboard it didn't sound very good and made me prefer my Skullcandy Slyr's. To improve maximize the potential of this headset what which would I need? A soundcard, dac, or amp. I do not want to spend a lot of money on any of those. The most I would spend would be $150 even then I'd much rather stay under $100 if possible. I did look at the Sound Blaster Z PCIe Gaming Sound Card and the FiiO E10K USB DAC and Headphone Amplifier. Would these work or are there better options?

Would it be worth it to get a different case like a Phanteks Phanteks Enthoo Series or what are some other cases that would be good?

Ok so I have a Thermaltake Chaser Series Chaser MK-I (VN300M1W2N) Black SECC ATX Full Tower Computer Case and I'm wanting to do liquid cooling but I'm not sure where i can put one or two radiators. Do I need a different case?