Positive Grid / SPARKSETWL20L

A great value guitar/bass amp set that lets you practice wirelessly at home! The dedicated Spark app can automatically generate bass and drum tracks for jamming, and automatically display the chords for your favorite songs!

■Positive Grid/Spark Wireless Set (BOSS/WL-20)

●Spark
■Guitar/Bass Amplifier/Combo Type
■Output/Speaker: 40W Class D Amplifier/4"" Custom Designed Speakers x2
■Total Impedance: 4Ω
■Stereo
■Bluetooth Audio
■USB Interface for Recording 1 In x 2 Out
■Power Supply: AC Adapter
■Size: 350x180x190mm
■Weight: 5.2kg

●WL-20L
■Guitar/Bass Wireless System
■Features
・Wireless system that can be used immediately by simply connecting to a guitar, bass, or electronic instrument
・Automatically establishes optimal wireless connection by simply docking the transmitter to the receiver for about 10 seconds
・BOSS's proprietary wireless technology provides high-quality, stable connection with ultra-low latency of 2.3ms. (Transmission range: 15m)
・Equipped with a built-in rechargeable battery. When fully charged, the transmitter can be used for up to 12 hours and the receiver can be used for up to 7 hours. 24-hour use
・Easy charging with a general-purpose USB adapter (5V/500mA or higher)
■Specifications

・Wireless communication format: Digital audio using Boss's proprietary method
・Wireless carrier frequency: 2.4GHz
・Maximum number of channels that can be used simultaneously: 14 (varies depending on the conditions of the location of use)
・Transmission range: Line of sight 15m (varies depending on the conditions of the location of use)
・Latency: 2.3ms
・Dynamic range: 110dB or higher
・Frequency response: 20Hz to 20kHz
・Nominal output level: -10dBu
・Output impedance: 1kΩ
・Recommended load impedance: 10kΩ or higher
・Indicator: POWER indicator (also used for battery check)
　　　　　　　　　　　RECEIVE indicator
・Connection terminals Output terminal: TRS standard type
　　　　　　　　TRANSMITTER terminal: TRS standard type
　　　　　　　　DC IN 5V terminal: USB micro B type
・Power supply: Rechargeable lithium-ion battery (DC IN 5V (obtained from the terminal)

- Current consumption: 60mA when operating wirelessly

- 500mA when charging

- Battery charging time: Receiver only: Approx. 3 hours

- Simultaneous charging with transmitter: Approx. 4 hours

- Continuous battery use time: Approx. 7 hours

- External dimensions: 87 (width) x 25 (depth) x 38 (height) mm

- Weight: 60g

- Accessories: Instruction manual, ""Safety precautions"" leaflet, transmitter,

Micro USB cable for charging (*1), warranty card,

Roland user registration card

*1: A commercially available USB AC adapter (5V/0.5A or higher) is required for charging.
* 0dBu = 0.775Vrms

- Nominal input level: -10dBu (1M Ω)
- Indicator: BATTERY
- Connection terminals Input terminal: TRS standard type

DC IN 5V terminal: USB micro-B type
- Power supply: Rechargeable lithium-ion battery (obtained from DC IN 5V terminal)
- Current consumption: 350mA
- Battery charging time Charging transmitter only: Approximately 3 hours

Charging simultaneously with receiver: Approximately 4 hours
- Continuous use time: Approximately 12 hours
- External dimensions: 87 (width) x 22 (depth) x 36 (height) mm
- Weight: 43g
* 0dBu = 0.775Vrms
* The basic functions of the WL-20L are the same as those of the WL-20, but cable tone simulation is not installed. For this reason, it is optimized for instruments where the effect of cables on sound quality is minimal, such as electric acoustic guitars with built-in preamps, guitars and basses with active pickups (pickups that require batteries), and even instruments with line-level output such as keyboards and Roland's Aerophone. The WL-20L can also be used with passive pickups if the sound quality changes typical of cables are not required.