I've bought closed verites for 2k USD also an expensive r2r dac and an amp.
If you have the money for it I recommend this.
TOPPING D90 DAC AK4499 DSD512 Hi-Res Bluetooth 5.0 USB DAC LDAC HiFi Full Balanced Decoder (Silver)
Amazon product ASIN B082PX5JX7
Mono price Thx aaa 888 Amp
Monolith™ by Monoprice™THX® AAA Balanced Headphone AmplifierFeaturing THX AAA 887 technologyThe THX® Achromatic Audio Amplifier (AAA) ensures the ultimate no compromise headphone a
www.monoprice.com
Value
SendyAudio Aiva Black Beauty Series 97x76mm Planar Magnetic Headphones
Amazon product ASIN B07P865N77
Sennheiser HD 660 S - HiRes Audiophile Open Back Headphone
Amazon product ASIN B076HP574T
Higher end.
Audeze LCD-X Over Ear Open Back Headphone with New Suspension Headband Creator Package - no Travel case
Amazon product ASIN B0765KJ5CB
Aeolus: [ˈe.o.los] Aeolus, known as the “divine keeper of the winds” in Greek mythology, is our answer to those wanting an “open version of the Atticus.” The Atticus, since its release in late 2016, has been known as a rare audiophile headphone that provides an impactful mid
www.zmfheadphones.com
HIFIMAN Arya Full-Size Over Ear Planar Magnetic Audiophile Adjustable Headphone
Amazon product ASIN B07K59HW9R
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If you don't want to spend more than 300 euro, try to get used senheiser hd650....
Also buy all headphones used from
www.hifishark.com