The Positive Grid Spark 40 is a 40-watt desktop practice amplifier that combines amp modeling, smart features, and app integration into a compact, modern package aimed at home players and content creators. It features over 10,000 amp and effects models available through the Spark app, including recreations of iconic amplifiers and a wide selection of drive, modulation, delay, and reverb effects. The amp runs four effects simultaneously through a signal chain that can be fully customized in the app. The standout feature is the Smart Jam function, which analyzes playing and generates a backing band of bass, drums, and keys that follows along in real time. Auto Chords can identify and display the chords of any song streamed through the amp via Bluetooth, making it an effective practice and learning tool. The two custom-designed speakers produce a warm, balanced sound with more low-end depth than expected from the enclosure size. A built-in USB audio interface enables direct recording to a computer. The design is sleek and modern, with a compact footprint that fits easily on a desk or shelf. The Spark 40 is ideal for bedroom players, students, and songwriters who want a versatile practice tool with smart learning features. Reliance on the smartphone app for full functionality means the experience depends heavily on maintaining a stable Bluetooth connection.

Guitar Amplifiers

A 40-watt smart practice amp with 10,000+ models via app, Smart Jam backing band generation, Auto Chords song detection, and built-in USB audio interface for recording.