For who doesn't know, Jupiter Audio Research does truly special modifications that supercharge our beloved classic Sennheisers. Received mine last November and listened around 20 hours. I would have rated them excellent if it wasn't for the rub marks on the shells which is how they left Jupiter's. Earpads like-new and headpad replaced with a way more comfortable Dekoni pad. All JAR600 come with a HD650 cable so the HD600 cable is not included. This is a ''silver screen'' HD600 btw.

One thing you'd need to look after yourself is new tape for the two tuning pieces. They weren't very sticky to begin with and unsealed/unused now lost all of it. Jupiter strongly recommended to source the following 3M > [ link ]
My suggestion is to contact your local 3M and ask if they're willing to provide a 20cm sample instead of the roll.

To balance out the shortcomings I'll work with you on shipment/Paypal fees or add a few extras:

-OG 6.35mm to 3.5mm adapter
-sealed HD650 headpad
-great condition case

Trades are unlikely but who knows. In a little bit of a DAC phase at the moment.

PM if interested