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So my computer speakers recently junked out on me and I'm looking to replace them. But some of my friends have told me that buying "monitors" that use speaker wire and running them through an amp as opposed to getting another pair of 3.5mm computer speakers are far better, and wouldn't you know it, I have an old stereo whose speakers would apparently fit perfect into an amp. So what are the real world advantages to using speakers that run through an amp instead of ones that plug into a 3.5mm jack? Would I, an average user, notice any difference? I tend to listen to a lot of music if that makes any difference. Just wondering if it's worth it to grab an amp or, if those speakers from my stereo don't work, some new speakers as well.
Monitors refers to pro audio studio reference speakers. They are generally designed to be full range and not 'colour' the sound too strikingly, though each company and model will have differing equalization curves, and the room affects this as well.
They are also "near field" which means that, unlike PA or home stereo speakers, for monitors the listener's sweet spot is within a few feet in front and down a centre line between the two, forming a triangle (look up 'studio monitor angle and sweet spot setup') are not designed to project into a room the way say a stereo system would, though I have used them at dinners and parties and they're fine. (Sweet spots are different and yet very achievable for multichannel setups like 4, 5.1, 9.2, etc) In the case of sitting in front of a computer at a desk, a gamer would be in the same configuration as a studio producer/engineer/composer/ etc. I am a composer and programmer, and I do also use my reference monitors for listening to Spotify and playing games and watching movies at my desk.
Now, many monitors are powered, which means that they have amps built in, so you can't plug speaker wire into them from an external amp (I prefer powered monitors).
For entry level, The KRK rokit 5 monitors are the most popular (I have a pair of these. And you can usually find a cheap used pair for sale on reverb.com) Mid-range you could try Focal alpha 50 or 65s, or some Tannoys. If you are interested in higher end, Focal's Be range are my favourites (in a dream).
If you do go this route you should consider looking into getting an audio interface, which connects to your computer via usb/firewire /thunderbolt and performs very accurate and high quality analog-digital/digital-analog conversion. You'd want one with at least 1 Mic input and at least 2 outputs (ideally at least 6 TRS outputs for in case you wanted to do 5.1, etc) I recommend focusrite (like the 2i2, or 18i20) for entry level, motu (like the traveller) for medium range, and RME (baby face, or the ucx. I'm personally after the ufx+) for high end.
Another potential benefit with an audio interface of interest to this forum is that many of the drivers for these devices include software-based flexible routers and mixers for the audio, which means you can tune your system to the acoustics of your room, or perhaps specific to a given ggame or situation.