300B MONOBLOCK 2 x 30w parallel pure-triode Class “A”: £16500/Pair

The MastersounD 300B Monoblock embodies the company’s dedication to unparalleled audio performance and craftsmanship. Specialising in high-wattage pure triode single-ended valve amplifiers, this monoblock provides a unique, powerful, and nuanced listening experience when partnered with the PHL5 or SPETTRO preamplifiers.

Powered by the celebrated 300B tube, renowned for its smooth and musical characteristics, the amplifier delivers rich midrange tones and exceptional harmonic detail. Its single-ended design ensures an unimpeded signal path, resulting in natural warmth, transparency, and a faithful reproduction of sound.

Meticulously hand-crafted in Italy, each unit reflects the expertise of the MastersounD team in valve amplifier technology. Designed for audiophiles seeking both power and refinement, the Monoblock 300B excels in soundstage depth, tonal richness, and a balanced dynamic range.

With a power output of 30 watts, the Monoblock 300B is equipped with 2 x 6SN7 and 2 x 300B tubes, along with a MastersounD-designed output transformer. The amplifier’s automatic settable bias system ensures optimal performance, while its wide load impedance range (4 – 8 Ohms) offers flexibility in speaker matching.

Offering a bandwidth from 8 Hz to 80 kHz at 0 dB and operating with zero negative feedback, the Monoblock 300B pushes the boundaries of analogue sound reproduction, providing a truly immersive listening experience.