Rolls HR31 Half Rack Mounting Panel Rack Ears amp PS-REL has a relay that

PS-REL has a relay that detects the presence of AC power

does not want to do without the uncompromising Neumann sound

stand-up design

All colors available in a soprano model

Other tote bags for up to 2'

Rolls HR31 Half Rack Mounting Panel Rack Ears amp PS-REL has a relay that2 of these brackets attach to the HR72,73,78 to allow those units to be rack mounted. These only work with those 3 HR units. Features: Allow rack mounting of the HR units Weather proof black powder coat paint Easily attached by any experienced sound engineer Made in USA Specifications: RoHS compliant Just the right size for HR units Made from 0. 050 CRS Steel Can hold refridgerator magnets