So i was looking for vintage Sennheiser headphones and a friend offered this rather new hd540 ref (with aftermarket pads) to me.

Although to be fair none of us have any extensive knowledge about the hd540 and I would love to know if this is a early/mid/or late 300 or 600ohms version.

https://preview.redd.it/2l0g3imes63c1.jpg?width=3024&format=pjpg&auto=webp&s=214b5ed2fd0b277d97ca1231e89a8634ad3f0ff0

https://preview.redd.it/81yg1omes63c1.jpg?width=4284&format=pjpg&auto=webp&s=b994218184c9db875cf1a5625b4f27212cbf9ca5

https://preview.redd.it/ohunrimes63c1.jpg?width=4284&format=pjpg&auto=webp&s=97cf4da4cfcfef6e6bc3215f0b7cfdcb09d15102

https://imgur.com/a/O0TyVZi

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