- Positiv Grid Spark Go, modelling combo amplifier for electric/acoustic guitar and electric bass, Spark GO Ultra-portable Smart Guitar Amp & Bluetooth Speaker. Jaw-dropping, room-filling sound with advanced acoustics powered by computational audio. Seamless integration with Spark App. Bluetooth speaker, audio interface, rechargeable battery and headphone/line out; channels: 1, power: 5 watts, equipped with: 1x 2" speakers, cabinet construction: passive radiator, frequency range: 110-20,000 Hz, controls: Guitar Volume, Audio Volume, switches: Preset, effects: 43 onboard (expandable via Spark app), connections: Input (1/4" jack), Phones/Rec Out (stereo 1/8" jack), USB-C port, special features:Smart Jam (AI generated backing tracks), Auto Chords (shows the chords for each Youtube video), Amp and Effect Library with more than 50,000 tones (grows daily), dimensions (W x D x H): 125 x 85 x 45 mm, (4,92" x 3,34" x 1,77"), weight: 0,4 kg (0,8 lbs), included: 2x strap, woven grill, black hardshell grill, USB charging cable, colour: Black