Little Dot

Little Dot MK4 Tube Headphone Amp


The Little Dot MK 4 has an internal jumper that allows a wider range of driver tube-rolling. Tubes that can be rolled include the EF92, CV131, WE403A/B, GE5654, M8100, CV4010, EF95, 6JI, along with any other equivalents, derivatives, or direct replacements of these vacuum tubes. It also has user-tweaking options such as two gain switches to delivery maximum compatibility with all your headphones, regardless of impedance or sensitivity. This MK 4 comes with a SEPP (Single-Ended Push Pull) in class-A circuit design and can easily drive headphones whether they are 32 ohms or 600 ohms.


  • SEPP (Singled-Ended Push Pull) OTL in Class-A
  • Frequency response: 10 hz~100 Khz (-1dB)
  • THD+N: 0.1% (100 mW @ 300 ohm)
  • Power Output:
    • 500 mW @ 300/600 ohm
    • 300 mW @ 120 ohm
    • 100 mW @ 32 ohm
  • Power Consumption: 30W (228V x 0.133A)
  • Variable Gain: 3,4,5, or 10x
  • Recommended Load Impedance: 32 ohm~600 ohm
  • Input Impedance: 50K ohms
  • Pre-Amplifier Output Impedance: 600 ohms
  • Pre-Amplifier Gain: 3-10x (also controlled via gain switches)
  • Pre-Amplifier Voltage: 10V RMS
  • High quality aluminum chassis
  • Weight: 3.5 Kg or 7.7 lbs
  • 1 Year Little Dot Warranty
  • Available in either 120VAC or 220VAC

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