Rolls WPM61 Wireless In-Ear System
Compact, powerful and a great value, the Rolls WPM61 is a breakthrough in Wireless In-Ear monitor systems. The WT61 transmitter accepts any mono/stereo line level signal through its 1/8 in. TRS stereo input jack (stereo signals are mixed to mono), and transmits flawlessly to any number of WR61 belt pack receivers. The WT61 transmitter features an input volume control, RF LED, and operates on the supplied AC Adapter. The WR61 belt pack receiver features power and battery LED, limiter, volume control, 9-volt operation.
Features:
High VHF operation
Crystal-controlled for drift free transmission
Four channels available
Musician in-ear monitor
Assistive Listening
Language interpretation
Mobile audio recording
Beltpack receiver has lots of volume
EB69 earbuds
9V Battery operation (optional AC adapter available)
The new WPM61 Wireless Personal Monitor system is the simplest, most cost effective way to be wire free. Applications for the WPM61 include musicians, assistive listening, language translation, etc. Simple to set up and operate, the WPM61 consists of a transmitter and receiver operating high VHF frequency range. This reduces dropouts. Musicians can move freely about the stage and enjoy their monitor mix undisturbed.
The WPM61t transmitter has a 1/8 in. (3.5mm) stereo input jack, a transmit volume control, power switch, battery/ac operation switch, power indicator LED, and telescope antenna. The signal is mixed to mono and transmitted to the receiver.
The WPM61r receiver has a volume control/on-off switch, and a 9 volt battery compartment on the back.
Price/performance make the WPM61 a perfect addition for anyone wanting in-ear monitoring.
Technical Info
Transmitter
Frequency Response: 30 Hz - 15kHz
Frequency Stability: +/-10 ppm (under 25 degrees C)
Modulation: 10kHz +/- 2kHz (1kHz 50mV)
Transmitting Power: 10mW
Spurious Emission: 80dB below carrier
Distortion: <1%
Max AF Input Signal: 500mV
Power Source: 9V battery, or or external DC 12V
Current Consumption: 28mA +/-5mA
Dimension (LxWxH): 100x63x25 mm
Receiver
Sensitivity: 2.5 µV min (under squelch control)
Max. Power: 20mW min (at 16 Ohm speaker load)
Distortion: 3% max (under 10mW output)
Frequency Stability: +/-0.01% ppm (under 25 degrees C)
Hum and Noise: - 50dB min
Power Source: 9V DC (alkaline recommended)
Current Consumption: DC 20mA max
Dimension: 60x25x100 mm
Personal use items that are used at your mouth or in your ear cannot be returned once opened due to health laws. This includes all microphones, guitar talk boxes, ear plugs, and in-ear earphones. 
