Line Magnetic LM-MINI 84IA Headphone Amplifier

The Line Magnetic LM-MINI 84IA is a tube headphone amplifier with EL84 output tubes running single-ended, which can also be switched to drive speakers.

Why the LM-MINI 84IA?

A genuine little tube amplifier for the home office or the nightstand: 2×3 watts is enough for practically any audiophile headphone, and via the front switch you can move over to efficient bookshelf speakers whenever you want.

What you hear

The typical Line Magnetic tube sound in a small format — warm, with pleasant spaciousness over headphones, entirely without an op-amp stage in between.

Who is the LM-MINI 84IA suited for? (and who isn't it for)

For headphone listeners who occasionally also want to switch to compact bookshelf speakers. Let's be direct: with high-impedance studio headphones or inefficient speakers, the small output power hits its limits — for most audiophile headphones, it's more than enough.

Our verdict

A charming tube hybrid between headphone amplifier and mini integrated amp.

Technical data

• Circuit principle: tube amplifier, single-ended, Class A
• Output power: 2× 3 W
• Tube complement: 2× 12AX7, 2× EL84
• Frequency response: 10 Hz – 50 kHz (-1.5 dB)
• THD: 1% (1 kHz)
• Signal-to-noise ratio: 87 dB (A-weighted)
• Input sensitivity: 210 mV
• Input impedance: 100 kΩ
• Headphone output: yes, 3.5 mm jack
• Speaker outputs: 4 Ω / 8 Ω via screw terminals
• Inputs: 1× RCA (stereo pair)
• Dimensions (W×H×D): 175 × 123 × 190 mm
• Weight: 4.5 kg

Frequently asked questions

Can I also connect speakers to the LM-MINI 84IA?

Yes, efficient bookshelf speakers can be driven directly via the front switch and the screw terminals.

Which headphone impedance suits it best?

Headphones with low to medium impedance and good efficiency are best suited — for very high-impedance studio headphones, it's worth checking with us first.

How heavy is the LM-MINI 84IA?

4.5 kg — it fits comfortably on any desk.

Does it need a break-in period?

Yes, like any tube amplifier, the sound settles in over the first hours of operation.

Why buy the LM-MINI 84IA at HD Zürisee?

We advise you on which headphones and which compact speakers best suit this small tube amplifier.

Goes well with

You'll find the right headphones in our headphone collection.