Integrated amplifiers — Line Magnetic LM-845 Premium

The LM-845 Premium is a tube integrated amplifier from Line Magnetic, built around the substantial 845 output tube with genuinely extraordinary chassis mass. The LM-845 Premium brings Line Magnetic's most ambitious current 845-tube engineering to a complete integrated chassis.

Key specs that matter

Three single-ended inputs plus a dedicated preamplifier input are provided. Input sensitivity is 250mV for line-level or 1,000mV for the preamplifier input, with input impedance at a high 100k ohms. Output power is 30W per channel - a genuinely modest figure reflecting the 845 tube's characteristic emphasis on tonal purity over raw output. Frequency response spans 15Hz to 35,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is 87dB. At 430 x 250 x 365mm and a substantial 62kg, the LM-845 Premium's considerable weight reflects the substantial 845 output tube's physical size and associated transformer requirements.

Sound and use context

Expect the rich, harmonically saturated tonal character 845-tube-based amplifier designs are broadly celebrated for, with the modest 30W output calling for genuinely efficient loudspeakers to reach satisfying volumes.

Pairing

The modest 30W output pairs best with genuinely efficient, high-sensitivity loudspeakers, such as Line Magnetic's own horn-loaded speaker catalogue.

Alternatives

Line Magnetic's broader tube-integrated catalogue, including the LM-211IA and LM-216IA Plus, offers alternatives with somewhat greater output within a more moderate chassis mass. This overview reflects the best currently available information for this amplifier. 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.