Line Magnetic Unveils LM-300IA: Premium Class A Tube Amplifier
By HiFi Editorial24 February 2026
Key Highlights
Features PSVANE 300B triodes with Electro Harmonix ECC81 and Tungsol 6SL7GXT tubes for warm, rich sound.
Equipped with toroidal power transformer and hermetically sealed components to ensure signal purity.
Offers flexible connectivity with three line inputs, pre-in input, and compatibility with multiple speaker impedances.
Line Magnetic has unveiled the LM-300IA, a meticulously crafted single-ended Class A tube integrated amplifier designed for discerning audiophiles. This new model showcases a premium selection of tubes, featuring the illustrious PSVANE 300B directly-heated triodes in the output stage, complemented by Electro Harmonix ECC81 and Tungsol 6SL7GXT tubes in the input and driver stages. The combination promises a rich, warm sound signature that tube enthusiasts will deeply appreciate.
The LM-300IA is equipped with a custom-designed toroidal power transformer and dual EI wideband output transformers. All internal components, including transformers and capacitors, are hermetically sealed to minimize electromagnetic interference and ensure signal purity. Operating in Class A, the amplifier delivers a robust 10 watts per channel, maintaining exemplary audio fidelity across a frequency range of 10 Hz to 50 kHz. Technical specifications highlight a total harmonic distortion of less than 1% at 1 kHz and a signal-to-noise ratio of 87 dB, underscoring its high-performance capabilities.
