Little Dot

Little Dot MK3 & MK3 SE Tube Headphone Amp (Apos Certified)


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Note: This is an Apos Certified product. That means it’s refurbished, like new, final sale, and carries an Apos Certified One-Year Warranty.

What Makes It Special

  • A "classic" tube headphone amp that has earned a solid reputation as a reliable workhouse that offers the ability to customize to the listener's desires
  • Changeable tubes with an extensive community around comparing which tubes work the best for different preferences (see Head-Fi thread)
  • Improved industrial design and appearance when compared to the MK3

Our Thoughts

The Little Dot MK3, like the MK2 has been around for what feels like a long-time now and it is still considered one of the best tube headphone amps for its price. Its popularity can be seen through the extensive number of reviews and discussions around the MK2 and Little Dot products. In particular, there are and continue to be, extensive discussions around tube rolling and customization of the MK2.

The Little Dot MK3 Tube Headphone Amp remains a solid choice as a tube headphone amp with a beautiful case and design.


  • Little Dot MK3 Tube Headphone Amp
  • Power Supply / AC Adapter
  • (2) 5654 Tubes
  • (2) 6H6PI Tubes


  • Chassis: High quality aluminum chassis
  • Frequency response: 12 Hz - 100 kHz
  • THD + N: 0.15% (80 mW @ 300 Ohms)
  • Power output: 350 mW @ 300/600 Ohms, 300 mW @ 120 Ohms, 100 mW @ 32 Ohms
  • Variable gain: 3, 4, 5, or 10x
  • Recommended load impedance: 32 - 600 Ohms
  • Input impedance: 50 kOhms
  • Pre-amplifier output impedance: 600 Ohms
  • Pre-amplifier gain: 3-10x
  • Pre-amplifier voltage: 10 V RMS
  • Power consumption: 30 W (228 V x 0.130 A)
  • Dimensions: 10.6 x 6.9 x 4.8 in (270 x 175 x 123 mm)
  • Weight: 6.6 lbs (3 kg)

Apos Certified

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