I recently purchased a pair of HD600's and quickly found out that my Nuforce Udac3 was not powerful enough to handle them. What is the cheapest option to get them properly powered? Should I buy a whole new dac/amp or can I just get an Amp and pair it with my Nuforce or even the built in dac on my computer motherboard (Asus ROG Strix Z370-F ). I am new to this so am fairly ignorant as to what I need. I appreciate all recommendations.