In addition to the original NA-BF/NA-BM adapters, two new versions in this series are now available. The BNC to 3-Pin XLR Receptacle (male & female) and the BNC to XLR cable end (male & female). Developed to provide and excellent impedance transformer at a reasonable cost for meeting the needs between analog & digital applications. Use of these adapters also allows for longer cable runs via unbalanced coaxial lines rather than twisted pair cables that present high attenuation values at relevant frequencies.