The Positive Grid Spark 40 Pearl is a 40-watt smart guitar amplifier designed for practicing, recording, jamming, and learning new songs. This compact unit delivers stereo sound through two 10-cm HiFi speakers with bass reflex port technology. With access to over 10,000 BIAS amp, pedal, and cabinet presets via the Spark app, musicians can quickly find tones ranging from clean country to aggressive metal. The amplifier offers Bluetooth connectivity for wireless control, voice command functionality for hands-free operation, and intelligent chord recognition that generates live bass and drum accompaniment. Measuring 26.9 cm wide, 26.9 cm deep, and 47 cm high, the Spark 40 Pearl weighs 5.2 kg, making it portable for rehearsals or lessons. It supports inputs for electric guitar, acoustic guitar, and bass guitar with physical knobs for tone adjustment. Connection options include USB for direct computer recording, a 3.5-mm headphone output for silent practice, and a 3.5-mm auxiliary input for playing along with backing tracks. The pearlescent white finish provides a clean, modern appearance suitable for home studios and practice spaces. The amplifier's smart features include automatic chord recognition from streaming services, riff training with adjustable tempo, and multi-track recording capabilities when connected to digital audio workstation software.