You asked for "good"

I can give you budget recommendations too: U12T, qdc Anole VX

If you want ultra budget: Sony IER-M9, Elysian GAEA, Softears Twilight

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This was in jest. I saw you mentioned a $400 limit for your budget. Why don't you try the Aful performer 5?

Elysian Annihilator

That's a great system. Thanks

Isn't it difficult to reach curly braces and other punctuation?

Not much of a difference in sound, driving power would improve and maybe some technicalities would come forward in different IEMs. If you purchase it, do it for the features or for the battery (since you bought your model from Ebay).

The biggest difference always comes from IEMs. I would even take the Hiby R3 Pro Sabre 2022 with expensive/better IEMs than a better DAP if the p2p power output is enough

I think a Seeaudio bravery, B2D, or even the variations/DUNU SA6 will be a massive step up for you, with a slightly more neutral tuning than the HD6xx. Easier to drive, of course, and the differences between IEMs being closed back and closer to the ear with detail retrieval.

Ideally the next step, if you'd like to stick to DAPs + IEMs would be the IE600 + Thieaudio monarch mkII/Softears RSV + Hiby RS2/FiiO M11s/Lotoo PAW 5000 MKII

ID on that receiver and the vinyl player?

Who are some of your favourite artists?