Nope, don’t agree with this statement at all. Have sat down and tested 770, 880, 990, 1770, 177x, 1990, and custom one pro plus
DT 880s Subtle V signature caters more towards a neutral or flat sound. Semi Open back. Good all around headphone. Not so great in competitive but good in other areas. medium sound stage good imaging. If you had posted this in casual and a emphasis for classical music I would’ve pointed you to the 880s and without the amp I would’ve pointed you to the tygr 300 r or custom one pro plus. The 880s can be good for classical as they are all rounders… I just feel the 990s can do their job better more so in this case. Personally I liked these about as much as I liked my 58x jubilee but these had a better sound stage and overall sound to them. Good choice if you want the all around headphone you can just pick up and use. Would recommend Head-Fi or Ebay or some alternative sites to use for buying these headphones. DT 990s for example have been shown to go for like $70 or so on there. another site called Offerup is good too.
DT 990s strong v signature sharp treble caters towards it’s V with increased low and high frequences with a recessed mid range. Open back. Both bass and treble are raised here. Due to the higher treble and emphasis on low and high frequencies this makes them superb for competitive and depending on your classical music these will do very well. Footsteps,breathing,explosions,gunshots, etc in side of competitive scenarios are emphasized with these headphones and due to the open back nature of this headphone gives you what can only be described as a feeling of a 360 degree sound experience with a very large sound stage and imaging. Can be viewed as uncomfortable to some who have treble sensitivity this can be reduced by using the 600 ohm version of this headphone and a liquid spark amp. Still due to the natural sharp sound of this headphone some things may come off as sibilant though I did not have that issue once I had the 600 ohm connected to a liquid spark.
Note: there is someone on this site who does mods of this headphone for a removable cable and balanced port. Haven’t heard from him in the longest time. https://www.afkheadphones.com/products/afk-khan if you can get ahold of him all the better. Also I had personally found the 250 ohm pros to be more comfortable than the premium. Felt that the premium had quite a bit more clamping force despite the 600 ohm having a much better overall tune to it Cons to the dt 990 is the fact that its only good with certain genres of music that make use of its signature and its not good as an all rounder headphone. not the greatest choice for more casual gameplay that would prefer a sense of immersion over a sense of competition
Lastly, if your lucky and can score one of these in the $300 range dt 1990. These are just like the 990 except much like the 880s they cater more towards neutral while still being an open back. Offers the best of both worlds both fantastic in competitive and fantastic in casual. Caters towards a very wide variety of music and does its job very beautifully. Very wide sound stage and imaging on par with 990s. Bass and treble are still heightened though not as sharp as the 990s are. Personally traded my 990s for these. If you don’t want a well rounded variation you will be fine with the 990s and if you don’t want the heightened v signature you will be fine with the 880s
Difference in amps has already been discussed…I had asked the comparisons between the magni 3+ and the liquid spark myself when I was first making my setup. I wanted something to compliment my Beyers and went with the liquid spark. Do not regret my decision at all. Not sure on the sound difference between the E30 and topping D10. Will say though, that you can get a D10 for cheaper than the E30
Beyer does offer a few headphones that are solid for gaming even in competitive without the use of an amp. Tygr 300 r is said to be like the dt990s but not as sharp. Custom one pro plus and Custom studio are well rounded and can be open back or close back and custome one pro plus comes with a mic. mmx 300 i dont recommend this due to the price tag like at all these are similar to the dt 770s just with a really high price tag… they do supposedly sound good though. Lastly is the 177x closed back unique for a closed back as it sounds fairly open and has a wide sound stage and good imaging but great bass signature is more of a U with a good yet subtle emphasis on low and high with a more balanced mid.