250W+100W 2.1 Digital Power Amplifier Module

This TPA3116D2-based board functions as a complete 2.1-channel digital power amplifier delivering 250W across stereo outputs and 100W to a dedicated subwoofer channel. It measures approximately 110mm × 75mm with standard 3.5mm pitch screw terminals for speaker and power connections. Construction uses FR-4 PCB with 2oz copper layers and thermal vias beneath power ICs to improve heat dissipation. Input is analog line-level via dual RCA jacks; no digital protocol support is included. The module operates in Class-D topology, achieving higher efficiency than linear amplifiers — resulting in lower standby power draw and reduced heat buildup during extended listening sessions. All signal paths are DC-coupled with minimal passive component count, preserving transient response. Protection logic activates silently on fault detection and resets automatically once safe operating conditions return. Typical deployments include compact hi-fi systems in studio apartments, portable PA upgrades, educational electronics labs across UK colleges, and OEM integration into EU-certified multimedia kiosks where audio clarity, size, and thermal safety are prioritised.