I am so sorry. I am new to all this. Please forgive me. Headphone I am going to buy is Audio Technica 900X budget is 250. Which amp or dac setup is good pairing to this headphone. My platform is PS4
No worries! Usual recommendations are Topping DX3 Pro+, Topping E30 + Topping L30, and the Schiit Audio Magni + Modi.
The DX3 Pro+ is the most convenient, E30 + L30 is the best measuring (but no human can tell the difference in sound), and the Magni + Modi is probably the most future proof because it has more power, and works better with low impedance headphones if you decide to upgrade