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BOSS WL-20 Best Guitar Wireless System Plug-and-Play Wireless Systems for Guitar, Bass, and Other Electronic Instruments


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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 7 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-20: Built-In Cable Tone Simulation
If you play a guitar or bass with standard passive pickups (the most common pickup type), the WL-20 model is probably your best choice. It includes built-in cable tone simulation, which reproduces the natural capacitive effect that's introduced when using a 10-foot/3-meter guitar cable with passive pickups. This effect rolls off the treble very slightly, giving you the warm tone you're used to hearing with a normal cable.

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.




1. What is the latency spec of the BOSS WL-20?

  • 2.3ms in normal conditions

2. Do you still need to dial-in channels when using the BOSS WL-20?

  • No. The BOSS WL-20 is plug-and-play.

3. Can you switch the transmitter off on the BOSS WL-20 when switching guitars to avoid noise?

  • No. You have to manually mute the mixer to avoid any sound/feedback when removing the BOSS WL-20.

4. Does the BOSS WL-20 work with an active bass guitar?

  • Yes, the BOSS WL-20 is like a standard cable, only wireless.

5. Can you put two transmitters into one receiver?

  • No.

6. Does the BOSS WL-20 fit in a Fender Stratocaster jack?

  • Yes, of course.

7. Is the BOSS WL-20 stereo or mono?

  • Stereo.

8. Does the BOSS WL-20 automatically power off when there is no sound/signal?

  • No, the BOSS WL-20 goes into standby mode and should be removed when not in use.

9. Can I connect the BOSS WL-20 to a guitar and an amp with a pedal board in the middle?

  • Yes.

10. Does the BOSS WL-20 work with a passive pickup?

  • Yes.

11. Does the BOSS WL-20 work with active pickups?

  • Yes but the BOSS WL-20 is recommended for passive pickups.

12. Are the batteries on the BOSS WL-20 user replaceable?

  • No.

13. Can I use the BOSS WL-20 while charging?

  • Yes.

14. Does the BOSS WL-20 work with keyboards and synths?

  • Yes.

15. Will the BOSS WL-20 work on a recessed plug of a telecaster?

  • Yes.

16. How long does the BOSS WL-20 last when fully charged?

  • At least 4 hours.

17. Can I charge the BOSS WL-20 using an AC socket?

  • Yes, you have to plug the USB charger into a power brick/adapter.



  • 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 7 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.


  • 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.

Size & Weight


  • Width: 87 mm (3-7/16 inches)
  • Depth: 25 mm (1 inches)
  • Height: 38 mm (1-1/2 inches)
  • Weight: 60 g (3 oz)


  • 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)

* 0 dBu = 0.775 Vrms
*The specifications are subject to change without notice.

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