The MastersounD BOOSTER Monoblock showcases unparalleled engineering, combining power, refinement, and musicality in a single-ended triode design. Featuring the KT150 valve, it delivers 40W per channel in pure triode mode or 80W in parallel single-ended mode, both operating in Class “A,” ensuring versatility without compromising sound purity.

Handcrafted with precision, the Booster features a custom output transformer and advanced valve complement for exceptional reliability and performance. With a wide bandwidth of 12 Hz to 29 kHz and zero negative feedback, it delivers distortion-free, full-spectrum sound, making it ideal for demanding loudspeakers.

Perfectly paired with the PHL5 or SPETTRO preamplifiers, the BOOSTER Monoblock embodies MastersounD’s commitment to high-fidelity excellence, offering a captivating and dynamic listening experience.