For what it's worth, I've used a small 1/4" wrench to tighten the connectors on the HE-6 and it works just fine.  The fit of the wrench on the connector is slightly loose but you'll have no difficulty tightening them up and it's quick.   Have just started listening to my new SR-71B this...

Kiatchai   The 3 foot Black Dragon Headphone cable adapter from 4 pin female XLR to Protector/SR71B Plug that I got from Moon Audio cost $80 plus shipping.  I don't know if Ray plans to offer adapter cables for the SR-71B.  Knowing that I would need one, I asked him for a source several...

Hi,   I'm a new member but a recent purchaser of HE-6 headphones so have been following this particular thread with great interest.  I had a chance to listen to the SR-71B at Ray's table at the recent White Plains gathering.  Based on what I heard, it will drive the HE-6's to any volume you...

Purchased two cables from Drew for my HE-6 headphones - XLR to speaker wire/banana plugs and XLR to Ray Samuels Protector balanced connector.  Both cables are very professionally constructed and in addition, Drew's a real pleasure to work with.