I don't use phones much but I have a pair of Phillips SHP 9000 I bought at a 'Car Boot Sale' for £10 boxed and new looking with a damaged cable. A new cable Sennhieser £10 ish and I'm away.
40Khz quoted upper frequency and they don't sound bad at all.
Cheapskate here lol Chris


No 18 in the Hall of fame smile I have simple tastes; I am content to settle for the best:
GIK monster bass panels, rear wall. QNAP TVS 471i3. Roon into DSP5200SE via 210/ 218 zone... Explorer 2. Bluesound Pulse 2, Mini & Flex. 596v1, 518, Foxsat HD, Sony BDP, Pioneer 5090, 2 Chromecast's for LRB videos. MS200 to F80 for a Roon zone