BOSS WL-20 / WL-20L Wireless Guitar & Instrument System

BOSS WL-20 / WL-20L Plug-and-Play Wireless Guitar System

The BOSS WL-20 Wireless Guitar System delivers ultra-low latency of just 2.3 ms, a 50-foot line-of-sight range, and a dynamic range of 110 dB or greater — making it one of the most transparent and reliable compact wireless systems available for guitar, bass, and other electronic instruments. Powered by proprietary BOSS digital wireless technology operating in the 2.4 GHz band, the WL-20 automatically selects the optimal channel, eliminating dropouts and setup complexity entirely.

For players comparing the best plug-and-play wireless system for guitar, the WL-20 series stands apart with its dock-to-pair setup — just connect the transmitter and receiver together for roughly 10 seconds and the system configures itself. No menus, no manual channel selection. Whether you're rehearsing at home, jamming with a band, or performing on stage, the freedom to move without cable management transforms your playing experience. The WL-20 model includes built-in cable tone simulation that replicates the natural capacitive roll-off of a 10-foot guitar cable, ideal for passive pickup guitars and basses. The WL-20L omits this simulation, making it the better fit for instruments with active pickups, onboard preamps, or line-level sources like keytars and digital wind instruments.

Up to 14 BOSS WL-series systems can operate simultaneously in a single space, making this platform viable for full band deployments and professional live rigs. Built-in rechargeable lithium-ion batteries power the transmitter for up to 12 hours and the receiver for up to 7 hours, with USB charging (5 V/500 mA or greater) keeping the system in the same charging ecosystem as modern smartphones. The WL-T transmitter is also available separately for players who need a spare.

Key Features of the BOSS WL-20 Wireless Instrument System

• Ultra-Low 2.3 ms Latency: Delivers immediate playing response with no perceptible lag, preserving the natural feel of a wired connection during live performance and recording.
• Automatic Channel Selection: Operates in the 2.4 GHz band and locks onto the optimal wireless channel automatically, ensuring rock-solid audio with zero dropouts and no manual setup.
• Cable Tone Simulation (WL-20 Only): Reproduces the natural capacitive treble roll-off of a 10-foot guitar cable for passive pickup instruments, delivering the warm, familiar tone players expect from a standard cable connection.
• No Cable Tone Simulation (WL-20L): Provides a flat, uncolored signal path ideal for active pickups, onboard preamps, acoustic-electrics, keytars, and other line-level instruments where cable capacitance has no meaningful effect.
• 12-Hour Transmitter Battery Life: Built-in rechargeable lithium-ion battery keeps the transmitter running through full days of rehearsal or multi-set gig schedules without recharging.
• Dock-to-Pair Setup: Eliminates complicated pairing procedures — simply dock the transmitter and receiver together for 10 seconds to automatically establish the optimum wireless connection.
• USB Charging via Micro-B: Charges both transmitter and receiver from any standard 5 V/500 mA USB adapter, eliminating the need for proprietary chargers or power supplies.
• Up to 14 Simultaneous Systems: Supports full-band wireless deployments with up to 14 BOSS WL-series units operating in the same environment without interference.

Technical Specifications

Receiver

• Wireless Format: BOSS proprietary digital audio
• Carrier Frequency: 2.4 GHz
• Compatible Channels: 14 (may vary with local conditions)
• Transmission Range: 50 ft line-of-sight (may vary with local conditions)
• Latency: 2.3 ms
• Dynamic Range: 110 dB or greater
• Frequency Response: 20 Hz - 20 kHz
• Nominal Output Level: -10 dBu
• Output Impedance: 1 k ohm
• Recommended Load Impedance: 10 k ohms or greater
• Connectors: Output: 1/4" TRS; Transmitter dock: 1/4" TRS; DC In: USB Micro-B
• Power Supply: Built-in rechargeable lithium-ion battery; USB 5 V DC
• Current Draw (Wireless Operation): 60 mA
• Current Draw (Charging): 500 mA
• Charge Time (Receiver Only): Approximately 3 hours
• Charge Time (Receiver + Transmitter Simultaneous): Approximately 4 hours
• Battery Life: Approximately 7 hours continuous
• Width: 3-7/16"
• Depth: 1"
• Height: 1-1/2"
• Weight: 3 oz (60 g)

Transmitter (WL-T)

• Nominal Input Level: -10 dBu (1 M ohm)
• Connectors: Input: 1/4" TRS; DC In: USB Micro-B
• Power Supply: Built-in rechargeable lithium-ion battery; USB 5 V DC
• Current Draw: 350 mA
• Charge Time: Approximately 3 hours
• Battery Life: Approximately 12 hours continuous
• Width: 3-7/16"
• Depth: 7/8"
• Height: 1-7/16"
• Weight: 2 oz (43 g)

What's in the Box

• WL-20 or WL-20L Receiver
• WL-T Transmitter
• Micro USB charging cable
• Owner's Manual
• Safety leaflet