Line Magnetic LM-845 Premium Integrated Amplifier

The Line Magnetic LM-845 Premium is the flagship of the 845 range – a single-ended Class A integrated amplifier with an external power supply chassis and 2×30 watts.

Why the LM-845 Premium?

Eight transformers, a separate power supply chassis, 300B and 310A driver tubes ahead of the 845 output tubes: Line Magnetic has packed in here everything the range makes possible. The British specialist press calls the result something that "makes music worth the investment of time and money" (Jason Kennedy, The Ear, 2021).

What you hear

A particularly transparent, powerful 845 sound – according to the review, a "powerful conduit" for the emotional depth of music (The Ear, Jason Kennedy, 2021), without the grain that cheaper tube amplifiers sometimes show.

Who is the LM-845 Premium for? (and who it isn't)

For listeners who want the maximum out of the 845 tube and are willing to plan for 62 kg total weight across two chassis in the rack. Straight talk: this is a statement piece – to get into the 845 family, the significantly cheaper LM-845IA is entirely sufficient.

Our verdict

The reference model of the range, praised by the specialist press in no uncertain terms.

Technical specifications

• Circuit design: tube integrated amplifier, single-ended, pure Class A, separate power supply
• Output power: 2× 30 W
• Tube complement: 2× 845, 2× 300B, 2× 310A (driver), 2× 12AX7
• Frequency response: 10 Hz – 50 kHz (-1.5 dB)
• THD: 1% (1 kHz)
• Signal-to-noise ratio: 87 dB (A-weighted)
• Input sensitivity: 220 mV
• Input impedance: 100 kΩ
• Speaker outputs: 4 Ω / 8 Ω / 16 Ω
• Inputs: 3× RCA (line), 1× Pre-In
• Amplifier dimensions (W×H×D): 435 × 460 × 456 mm, power supply 435 × 160 × 456 mm, total stacked height 620 mm
• Weight: 62 kg (total)

Frequently asked questions

Why does the LM-845 Premium consist of two chassis?

The amplifier and power supply are physically separated, which reduces hum and electrical interference in the sensitive signal path.

Does the LM-845 Premium have a headphone output?

No.

How heavy is the total delivery?

62 kg, split between the amplifier and power supply chassis – on request, we take care of delivery and setup at your place.

What does the specialist press say about the LM-845 Premium?

The Ear (Jason Kennedy, 2021) describes it as a "powerful conduit" for the emotional depth of music – a clear nod to its transparent, powerful reproduction.

Why buy the LM-845 Premium at HD Zürisee?

A unit in this class deserves personal advice – we help you with speaker choice, setup, and every question around the 845 tube.

Pairs well with

For the right speaker combination at reference level, it's worth a consultation – also take a look at our speaker collection.