Sennheiser AVX radio mic
New from Sennheiser, the AVX radio mics are easy to pair and do all the hard work of sensitivity and levels for you. Major improvements to their existing radio mics are:
1) Rechargeable batteries for both TX and RX - no more need for 100s of AA batts!
2) RX plugs directly into XLR port, eliminating the need to clumsily mount the RX and does away with temperamental input cable