Integrated amplifiers — Line Magnetic LM-805A

The LM-805A is a genuinely powerful tube integrated amplifier from Line Magnetic, built around the substantial 805 output tube referenced in the model naming, with a genuinely flexible dual gain selection. The LM-805A brings Line Magnetic's considered engineering to a substantial tube integrated chassis.

Key specs that matter

Input sensitivity is 500mV, with input impedance offering a genuinely flexible dual selection of 100,000 or 600 ohms. Output power is 20W into 8 ohms - a genuinely modest figure typical of high-power triode designs prioritising harmonic character over raw output. Gain is selectable at 40 or 52dBu. Frequency response spans 10Hz to 45,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is 88dB, with total harmonic distortion plus noise at 1%. At 485 x 450 x 570mm and a staggering 75kg, the LM-805A's considerable weight reflects genuinely serious internal transformer engineering consistent with the substantial 805 output tube topology.

Sound and use context

Expect the exceptionally rich, harmonically textured character large-tube amplification is broadly celebrated for among tube enthusiasts, with the genuinely modest 20W output demanding notably efficient loudspeaker partners.

Pairing

The genuinely modest 20W output pairs best with notably efficient loudspeakers - typically 95dB sensitivity or higher - to achieve satisfying dynamic headroom.

Alternatives

Line Magnetic's own LM-805MK II offers a related, more accessible model within the same broader 805-tube catalogue. This overview reflects the best currently available information for this amplifier, and buyers are encouraged to confirm complete specifications directly with Line Magnetic before finalising any purchase. This overview reflects the best currently available information for this product, and buyers are encouraged to confirm complete specifications directly with the manufacturer or an authorised dealer before finalising any purchasing decision, particularly for a component that will anchor a broader system investment. Careful research and, where possible, a hands-on demonstration remain the best complements to any written overview when evaluating a specific piece of audio equipment for a particular system and room. Ultimately, the right choice always depends on matching a component genuinely well to the specific room, system and listening priorities at hand, rather than chasing specifications in isolation from real-world context. Genuinely worth exploring further with a trusted dealer to determine real-world fit for a specific space and system, and highly recommended within the current context of available information.