Have you always dreamed about going wireless with your instrument, but were put off by the complicated setup, tone loss, and bulky adds-ons? If so, the WL-20 series from Boss is for you! Driven by new lightning-fast BOSS tech, these ultra-compact music tools deliver premium sound and plug-and-play operation that completely eliminates all the hassles normally associated with wireless systems.Once you experience the easy wireless independence provided by the WL-20 series, you’ll never go back to using a standard cable again! With no worries about cable management, you’re able to move about freely while playing at home, jamming with friends, and performing on stage. During sound check at a gig, you can listen to your tone out front and dial in the best sound for your audience. And with the ability to roam and interact with other musicians, your live shows will be more dynamic and entertaining than ever.The WL-20L model is functionally identical to the WL-20, with the exception that it eliminates cable tone simulation. This makes it the best choice for instruments where cable capacitance has little or no effect on the tone, such as an acoustic/electric guitar with an onboard preamp, a guitar or bass with active pickups, or a line-level device like a keytar or Roland’s Aerophone digital wind instrument. The WL-20L also works great with passive pickups if you don’t need the subtle treble roll-off provided by cable tone simulation.Boss WL-20L Includes:Owner's ManualLeaflet USING THE UNIT SAFELYTransmitterMicro USB cable for chargingBoss WL-20L Features:Plug-and-play wireless systems for guitar, bass, and other electronic instrumentsNo complicated setup required—simply dock the transmitter and receiver together for about 10 seconds to set the optimum wireless connectionNewly developed BOSS technology delivers premium audio performance with rock-solid stability, ultra-low latency (2.3 ms), and 50-foot/15-meter range (line-of-sight propagation)*Built-in rechargeable batteries provide up to 12 hours of continuous playing time**Simple charging with a standard USB adaptor (5 V/500mA or greater)Cable tone simulation reproduces the natural capacitive effect of a 10-foot (3-meter) guitar cable (WL-20 model only)Spare WL-T Transmitter available separately* The transmission range may vary due to local conditions.** A full charge provides 12 hours of time for the transmitter and 10 hours for the receiver.Boss WL-20L Specifications:Wireless Format: BOSS proprietary digital audio formatWireless carrier frequency: 2.4 GHzCompatible Channels: 14 (May vary due to local conditions)Transmission Range: 50 feet line-of-sight (May vary due to local conditions)Latency: 2.3 msDynamic Range: 110 dB or greaterFrequency Response: 20 Hz--20 kHzNominal Output Level: -10 dBuOutput Impedance: 1 k ohmRecommended Load Impedance: 10 k ohms or greaterIndicators:POWERConnectors:Output plug: 1/4" TRS phone typeTRANSMITTER jack: 1/4" TRS phone typeDC IN 5 V port: USB Micro-B typePower Supply:Rechargeable lithium-ion batterySupplied from the DC IN 5 V portCurrent Draw:During wireless operation: 60 mAWhile charging: 500mABattery charging time:Charging only the receiver: Approximately 3 hoursCharging simultaneously with the transmitter: Approximately 4 hoursExpected battery life under continuous use: Approximately 10 hours (* These figures will vary depending on the actual conditions of use.)Dimensions (WxDxH): 3-7/16" x 1" x 1-1/2" (87 x 25 x38 mm)Weight: 60 g (3 oz) Boss WL-20L Guitar Wireless System without Cable Tone Simulation.