Boss WL-20L Guitar Wireless System

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 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.

• Plug-and-play wireless systems for guitar, bass, and other electronic instruments
• No complicated setup required—simply dock the transmitter and receiver together for about 10 seconds to set the optimum wireless connection
• Newly 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/500 mA 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.

Lightning-Fast BOSS Wireless Technology

Equipped with high-performance BOSS wireless technology that debuted in the Katana-Air wireless guitar amp, the WL-20 series delivers exceptional sound quality with wide dynamic range. Working in the 2.4 GHz frequency band, the optimum channel is set automatically to ensure rock-solid audio performance with absolutely no drop-outs. And with ultra-low latency of just 2.3 ms, you’ll always enjoy great playing feel with no lag whatsoever. Up to 14 BOSS wireless systems can be used simultaneously in one space, allowing multiple musicians to enjoy wireless freedom at the same time.*

*Environmental conditions may affect the actual number of simultaneous systems available.

Plug In and Rock

A WL-20 system is literally as simple to use as a standard guitar cable. The small transmitter plugs into your instrument, while a matching receiver plugs into a pedal or amp. That’s it!

Automatic Wireless Setup

With the WL-20 series, there’s no fiddly channel setup required. Just dock the transmitter and receiver together for about 10 seconds to automatically set the optimum connection.

Easy Charging via USB

When docked, the built-in batteries in the transmitter and receiver can be charged together with a standard USB adaptor (5 V/500 mA or higher), the same type used with the latest smartphones and tablets. The transmitter and receiver can also be charged separately, and a micro USB cable is included for charging.

WL-20L: No Cable Tone Simulation

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.

Specifications (Receiver)

Wireless Format BOSS proprietary digital audio format

Wireless carrier frequency 2.4 GHz

Compatible Channels 14
(May vary due to local conditions)

Transmission Range 50 feet line-of-sight
(May vary due to 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

Indicators POWER
RECEIVE

Connectors Output plug: 1/4-inch TRS phone type
TRANSMITTER jack: 1/4-inch TRS phone type
DC IN 5 V port: USB Micro-B type

Power Supply Rechargeable lithium-ion battery
Supplied from the DC IN 5 V port

Current Draw During wireless operation: 60 mA
While charging: 500mA

Battery charging time Charging only the receiver: Approximately 3 hours
Charging simultaneously with the transmitter: Approximately 4 hours

Expected battery life under continuous use Approximately 10 hours
* These figures will vary depending on the actual conditions of use.

Accessories Owner's Manual
Leaflet USING THE UNIT SAFELY
Transmitter
Micro USB cable for charging (*1)
*1: Use a standard USB AC adaptor (5 V/over 0.5 A) for charging.

Width 87 mm
3-7/16 inches

Depth 25 mm
1 inches

Height 38 mm
1-1/2 inches

Weight 60 g
3 oz

Specifications (Transmitter (WL-T))

Nominal Input Level -10 dBu (1 M ohm)

Indicator BATTERY

Connectors Input plug: 1/4-inch TRS phone type
DC IN 5 V port: USB Micro-B type

Power Supply Rechargeable lithium-ion battery
Supplied from the DC IN 5 V port

Current Draw 350mA

Battery charging time Approximately 3 hours
Expected battery life under continuous use
Approximately 12 hours
* These figures will vary depending on the actual conditions of use.

Width 87 mm
3-7/16 inches

Depth 22 mm
7/8 inches

Height 36 mm
1-7/16 inches

Weight 43 g
2 oz

*Specifications subject to change without notice.