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Positive Grid Spark GO BK — 5-Watt Smart Guitar Amp That Fits in a Gig Bag

The Positive Grid Spark GO BK is a 5-watt ultra-portable smart guitar amp and Bluetooth speaker created for players seeking studio-grade tone anywhere. At just 346 g, computational audio and a passive-radiator enclosure push 82 dB SPL from a single 2-inch custom driver. What stands out is its ability to deliver a complete practice, recording, and music setup in one palm-sized unit.

What Sets This Model Apart from Other Mini Amps

While most practice amps shrink the speaker, the Spark GO uses computational audio to replicate a larger cabinet's response, pairing it with a passive radiator that extends the low end beyond what a 2-inch driver would normally offer. Serving as a class-compliant USB audio interface (1 In / 2 Out, 44.1 kHz, 16-bit), this amp enables laptop recording without the need for extra gear.

33 Amps and 43 Effects Powered by the Spark App

Processing onboard covers 33 amp models from boutique clean to modern high-gain, alongside 43 effects like noise gate, compressor, distortion, modulation/EQ, delay, and reverb. Four presets are stored directly on the amp, and using the Spark app gives access to Smart Jam, Auto Chords, and over 50,000 ToneCloud tones.

• With 33 onboard amp models, you can shape your sound from clean and crunch to lead and high-gain—covering boutique and modern voicings
• Effects: 43 onboard — noise gate, compressor, distortion, modulation/EQ, delay, and reverb
• Four fully customizable onboard preset slots for immediate sound recall

Bluetooth 5.0, USB-C Audio Interface, and Headphone/Line Out

Wireless streaming from any phone or laptop is handled by Bluetooth 5.0. A 3.5 mm headphone/line output supports silent practice or connects to a powered cab. The USB-C port also acts as a class-compliant audio interface (1 In / 2 Out, 44.1 kHz, 16-bit) for easy recording on the go.

• Bluetooth: 5.0 — wireless streaming and on-amp music volume control
• Use the USB audio interface (1 In / 2 Out, 44.1 kHz, 16-bit) to record straight to your DAW
• The 3.5 mm headphone/line output makes silent practice or connecting to powered cabinets convenient

8-Hour Battery, USB-C Charging, 346 g Body

The 2500 mAh lithium-ion battery provides up to 8 hours of playtime at mid volume and recharges in 2 hours using USB-C. Any 5 V / 1.2 A mobile charger will keep the amp ready to go. At only 346 g, it’s light enough to clip to a belt loop or drop into your gig bag.

• Practice all day with the 2500 mAh lithium-ion battery, offering up to 8 hours of use
• Charging: USB-C, 2 hours full charge — works with most modern phone cables
• The amp weighs just 346 g, lighter than many single guitar pedals, making it easy to transport

Who Should Buy This Amp

Travelling guitarists, bedroom players, and bassists needing one device for practice, recording, and casual music listening will appreciate this model. Beginners can make use of Auto Chords and Smart Jam to transform the amp into a teacher and backing band, while more advanced musicians will find a full effects library and reliable recording interface without additional gear.

Positive Grid and the Spark Amp Line

Positive Grid first earned acclaim with its BIAS amp modelling software before launching the Spark 40 practice amp. Shrinking that flagship tone engine into a 5-watt, 346 g enclosure, this model runs the full Spark app ecosystem.