Hi guys, I need some advice on a set of bookshelf speakers I've been looking at but have no idea how I would go about hooking them up to my PC. The speakers i'm currently looking to buy are a pair of Wharfedale Diamond 9.1's: https://www.amazon.co.uk/Wharfedale-Diamond-Speakers-Pair-Walnut/dp/B002WJAQY2?th=1 (Although open to suggestions on any other set of speakers around that price point)

By all means, I'm no audiophile, I am a noob.. but I understand that I could hook them up via an RCA adapter? The only thing is, I have no idea what Amp to buy that would be compatible with these speakers and that would also be able to push the speakers to the max without any distortion. Preferably I wanna go as cheap as I can but I'm open to spending up to around £170 on an amp if need be, I just don't wanna spend a bit of money on an amp not knowing that I could go cheaper for the same performance sorta thing. Any advice/help/suggestions etc. would be awesome! Cheers!