On-Stage GS7640 Wall-Mount Guitar Hanger w/Round Metal Base sennheiser pdf) you find the specification

pdf) you find the specification for these devices

the JD6 incorporates six high performance audio transformers with extra RF filtering to ensure optimal signal transfer without noise

gripping material that absorbs sweat and reduces hand fatigue

providing you with a devastating broadband Big Muff slam

Handle huge transients without distortion

On-Stage GS7640 Wall-Mount Guitar Hanger w/Round Metal Base sennheiser pdf) you find the specificationThis mount is offered with a round solid steel base and features a black velveteen rubber yoke. For studio of home use. Metal mount. Black powder coat finish. For studio home use Solid steel round base Black velveteen rubber yoke