Going to completely disagree with quite a bit on this post here. Will have explainations. Sennheiser 6xx bad for gaming not a wide sound stage. Get a 58x if your going sennheiser as its all around better in game. AKG k702 is better than k701 but this series suffers from lack of bass despite having an extremely wide sound stage the bass is outright lacking here. Audio technica would be the AD—x series and like the k series from akg these lack bass and are more colored not the greatest but ad700x is usually the recommendation with ad1000x for proper seperation. Do not go GSX 1000 these are garbage for higher sound and 7.1 is a niche that does not provide ANY benefit in game it actually ruins the sound. If you are going to go amp/dac look at the G6 like mentioned as this will suit you fine and is a lot stronger than the gsx 1000.
Headphones: 58x jubilee, DT 880 for all around sound and better competitive edge over 58x jubilees, DT 990s for strictly competitive use
Amp: G6 works fine on these DT 990 may suffer slightly due to higher treble peak that g6 doesn’t resolve and can sound sibilant due to it.
Microphone: Depends on what your looking for… general just gaming? Go with a modmic USB want a cheaper option? Go with a lavalier mic that attaches to your shirt or headphone cable.
Explainations for reasoning behind the headphones chosen. 58x has a wider soundstage and is all around good it benefits from both casual and competitive as well as music as it is a balanced sounding headphone. DT 880 this is like the 58x but with a wider soundstage and a Slight V signature meaning your bass and your treble are slightly amplified the lows and high ends of a headphone are what you hear 95% of the time in any fps. DT 990 the sharpest sound and the harshest of the V signature this has the widest of the sound stages and you have 360 degree visional sound around you naturally you can pin point sounds from a very wide distance making this one of the best in its budget for competitive… 880 would be recommended if you prefer a more all rounder to this and less treble and 58x for more color and body to the sound. For the DT series you want the 600 ohm version which is listed under the “edition” or “premium” versions not the “pro” if 600 ohm is out of budget run a 250 ohm pro any lower on the ohms and these headphones will sound bad and beat the purpose of using an amp/dac to begin with as from there you would be better off using headphones that don’t require an amp/dac
Sound stage is your distance you can hear and pick out sounds. this goes alongside seperation of sound as some headphones will sound blended not allowing good pin point sound. this goes alongside imaging which allows pin point accuracy as sometimes youll hear something and it wont accurately place the sound to you from a distance.
It would be a good idea to have a dedicated amp and dac instead of a combined unit as you will benefit more from sound and balanced sound wise… This becomes expensive as a general gamer setup for these two seperate will run $200 maximum. If you are okay with this and will go the DT 990 go with a liquid spark amp and a dac with the optical plug. For the 58x jubilee and 880 go with a magni 3+ amp and again a dac with opticals
Final note: these headphones look expensive at first glance… there are many people who sell these in a Like New or Mint conditioning for half the price. Look around.