All the UHF wireless microphone tuners in the TOA 5000 Series employs phase locked loop (PLL) synthesis for remarkably stable performance. Their reliable wide-area coverage permits use of up to 16 microphones within a radius of up to 120 meters from the YW-4500 UHF wireless antenna. Other features include TOA true diversity (WT-5800) or space diversity (WT-5805) circuitry, a usable frequencies scanning and vacant channel search function, a double super-heterodyne receiving system and a tone squelch function to mute unwanted noise. Each of the three 5000 Series tuners also offers a separately configured range of additional features to satisfy different users' particular needs. The WT-4820 2-channel wireless tuner, which operates on 12V-18V DC power, rounds out the tuner line-up.
Transmitter options include the WM-5225 condenser handheld, WM-5265 dynamic hand-held, WM-5270 dynamic hand-held and WM-5325 body-pack (which accept any of several lapel & headset mic options). All transmitters can be set to any of 64 UHF frequencies and are powered by a single AA battery for ten hours of continuous operation. Most (except for WM-5270) can also work with rechargeable NiMH AA batteries which can be charged directly inside the mic with optional battery chargers.