I also used the owa3 system for transmitting to my speakers. I didn't have any issues but... remember that the system uses a 2.4 Ghz frequency which is also used by a lot of other stuff for instance microwave ovens and various household items such as outdoors thermometers and security systems stuff. Also the system is affected line of sight to an extent.
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
Large Advent Loudspeakers/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590
Home Theater System
Onkyo PR-SC886/7125/Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioners