The MastersounD 300B Monoblock exemplifies Italian craftsmanship and audiophile excellence. Designed for pure triode single-ended amplification, it delivers 30 watts of rich, transparent sound with natural warmth and exceptional detail. Powered by renowned 300B tubes and complemented by 6SN7 valves, it features a MastersounD output transformer, automatic bias, and broad speaker compatibility (4–8 Ohms).

With a bandwidth of 8 Hz to 80 kHz and zero negative feedback, the Monoblock 300B achieves remarkable soundstage depth, tonal richness, and dynamic balance, offering an immersive listening experience when paired with PHL5 or SPETTRO preamplifiers.