Roswell Pro Audio Mini K67x (Matched Pair) Condenser Microphones The Mini K67x is a compact, large-diaphragm condenser with harmonic coloration from its transformer-coupled circuit. The voicing is not overtly colored, but is not as neutral as the Mini K87; the upper mids (4-7kHz) are slightly scooped, and the rolloff above 12kHz is very gradual, giving [...]