The Positive Grid Spark Live is a versatile 4-channel guitar and PA amplifier with 150 watts of power and Bluetooth connectivity. This all-in-one amplifier system offers dedicated channels for electric guitar, vocals, bass, acoustic electric guitar, keyboards, and audio sources. Channel 1 is optimized for electric guitar, Channel 2 handles vocals, bass, or acoustic electric guitar, while Channels 3 and 4 provide stereo inputs for keyboards, computer audio, or effects devices. The Sonic-IQ technology combines digital signal processing, acoustic optimization, and speaker tuning for impressive sound projection comparable to acoustic drums, all within compact dimensions of 464 x 250.6 x 306 mm and a weight of 12 kg. The free Spark Companion App offers 33 detailed amplifier models, 43 high-quality effects, and thousands of professional presets for Channels 1 and 2, with each channel supporting eight programmable presets for quick access during performances or recordings. The built-in G-sensor automatically adjusts the equalizer settings based on orientation, providing focused mono output in an upright position and wide stereo imaging when placed horizontally. Additional features include a built-in 2x2 audio interface for studio-quality recordings, Bluetooth 5.0 streaming, XLR microphone input, 3-band equalizer controls, and a multi-angle stand with a 35mm PA mounting option. The computer-based audio technology adapts to the room acoustics while maintaining clarity and projection. The Spark Live serves as a comprehensive solution for practice, live performances, and recordings, offering dynamic response control, SPL/THD management, multiband compression, virtual bass enhancement, and automatic equalizer adjustments. The rechargeable battery is sold separately.