need more info, that's a SB unit so both plugs are normal biased, but the earspeakers/headphones could be either normal or pro biased headphones.
they are most likely a lambda (normal bias) or lambda pro (pro bias). could be a lambda signature (pro bias) as well, but i remember those coming with brown pads and a brown headband.
a lambda normal with the srd-7/sb usually goes for 200-300'ish.
they are most likely a lambda (normal bias) or lambda pro (pro bias). could be a lambda signature (pro bias) as well, but i remember those coming with brown pads and a brown headband.
a lambda normal with the srd-7/sb usually goes for 200-300'ish.













