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MasterSound Compact 300B Integrated Tube Amplifier (Class A) is backordered and will ship as soon as it is back in stock.
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High-End Class A Tube Amplification
The MasterSound Compact 300B is a premium integrated tube amplifier built around classic 300B triode tubes in a pure Class A topology, delivering warm, musical sound with rich harmonic detail and open dynamics.
300B Triodes for Natural Sound
Equipped with carefully matched 300B output tubes, this amplifier emphasizes natural midrange tonality, smooth highs and a coherent soundstage — perfect for lovers of analog warmth and tube character.
Integrated Design for Simplified Setup
Combines preamp and power amp stages into one elegant chassis, eliminating the need for separate components while ensuring optimal signal integrity and amplifying performance for stereo speakers.
Class A Operation for Purity
Operates in pure Class A mode, which prioritizes linearity and low distortion — resulting in a more refined, dynamic presentation with exceptional responsiveness and musical flow.
Premium Components & Build Quality
Built with high-grade capacitors, transformers and point-to-point wiring, this amplifier reflects meticulous craftsmanship aimed at audiophiles seeking detailed, immersive sound quality.
Warm, Rich Audio Signature
Known for producing smooth, elegant tonality with deep musicality, the Compact 300B brings out texture in vocals and instruments, offering a relaxed yet engaging listening experience.
Speaker Compatibility & Flexibility
Suitable for driving efficient bookshelf and floor-standing speakers — especially those that pair well with tube amplification — giving a satisfying balance of warmth and clarity.
Classic Aesthetic & Robust Construction
The amplifier’s classic, minimalist design and robust metal chassis make it a visually striking centerpiece in any hi-fi setup, complementing both modern and vintage audio systems.
Ideal for Audiophiles & Tube Enthusiasts
Perfect for listeners who appreciate analog warmth, nuanced detail and the distinct musical signature that only a well-designed tube amplifier can provide.
Specification
Details
Brand
MasterSound Model
Compact 300B Amplifier Type
Integrated Tube Amplifier (Class A) Output Tubes
2 × 300B Power Tubes Driver Tubes
2 × 12AU7 / ECC82 (Typical) Power Output
Approx. 30 W per channel (Pure Class A) Frequency Response
20 Hz – 20 kHz Total Harmonic Distortion
Low THD (Tube-Design Dependent) Input Sensitivity
~300 mV – 500 mV (Typical) Inputs
RCA Line Inputs (Multiple) Output Terminals
High-Quality Binding Posts (4Ω / 8Ω) Class Type
Pure Class A Single-Ended Triode (SET) Chassis Material
Premium Metal with Wooden Side Panels (Varies by Edition) Dimensions
Approx. 430 × 200 × 350 mm Weight
Approx. 22 kg – 25 kg Special Features
Hand-Wired Circuitry, Zero Feedback Design, High-End Audio Fidelity Recommended Speakers
High-Efficiency Speakers (90 dB+)
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