Hi James,
Thanks for your reply. You may want to reconsider the headphone outputs being male XLRs as the standard. I have 7 headphones including the Audeze LCD3, LCD2 r1, LCD2 r2, HifiMan HE6, Sennheiser HD800, LA7000 (Lawton Audio modded Denon D7000), and AKG K340 modded by Headphile. All of my headphones are setup for both balanced operation via a two 3 pin male XLRs or one 4 pin male XLR and also I have 1/4" adapters cables for single ended operation. Each one of my headphones has an aftermarket headphone cable costing between $300 and $600 each and all of them are setup for a female XLR on the amp. Many headphone enthusiats have similiar setups. So, I would say that nearly 100 percent of us head-fiers are setup for female XLRs on our amps. I'm suggesting that you make the standard for the BHA-1 female XLRs to avoid unhappy customers who may assume that the standard is female XLR output headphone jacks.