Maestro Amplifier Board SUB3500I

The Maestro Audio Amplifier Board SUB3500I delivers mono amplification with precision-matched Toshiba 2SC5200

The Maestro Amplifier Board SUB3500I is engineered for mono subwoofer applications, utilizing matched pairs of Toshiba 2SC5200 and 2SA1943 transistors to achieve clean, undistorted amplification. Built on a reinforced glass epoxy PCB substrate with Keltron capacitors and HTR resistors, this board prioritizes thermal management and signal fidelity across demanding playback scenarios. The circuit topology minimizes noise interference while extending frequency bandwidth, making it suitable for dedicated single-channel audio systems where sustained performance and component longevity are essential requirements.

and 2SA1943 transistor pairs (2 each) for balanced, distortion-free output. This board features a reinforced glass epoxy PCB foundation paired with Keltron capacitors and HTR resistors—premium components selected to maintain signal integrity and thermal stability under demanding conditions. The carefully engineered topology ensures low noise floor and extended frequency response, making it an excellent choice for dedicated mono subwoofer channels or single-channel audio applications requiring professional-grade amplification with long-term reliability.