Little Dot MK 4 Tube Headphone Amplifier

478.80 $
Mubiz is not yet open in Chine.

Product Product

physical good
fixed price

Terms and conditions Terms and conditions

Unless specified otherwise, we will ship you the Little Dot voltage model appropriate for use in your shipping destination country. The two options are 110-120V and 220-240V.


You can request a return for refund within 30 days of receipt of item. Please note that shipping costs are non-refundable.

Description Description

The Little Dot MK IV is the pinnacle of our SEPP (single-ended push pull) OTL in Class-A amplifier design. High quality components such as an ALPS-27 potentiometer, Nichicon, Rubycon, and German WIMA/ERO capacitors are used throughout the circuit. The high voltage swing (45V peak-to-peak!) is ideal for driving high impedance headphones to their full potential. 

Even at high volumes the Little Dot MK IV delivers a smooth, non-fatiguing sound with no hint of dynamic compression or imaging fuzz. The liquid midrange vacuum tube lovers expect is here in spades, and the balance between an impactful low-end with a sweet, airy treble provides a reference quality sound. 

The Little Dot MK IV also adds in user-tweaking options such as gain controls to provide maximum compatibility with all your headphones, regardless of impedance or sensitivity. 

Internal jumpers allow a wide range of driver tube-rolling options including the EF92, CV131, WE403A/B, GE5654, M8100, CV4010, EF95, 6JI as well as all equivalents to these vacuum tubes!  

Technical Specifications:

  • SEPP (Single-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 oh
  • 100 mW @ 32 ohm
  • 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
  • Power Consumption: 30W (228V * 0.130A)
  • Pre-Amplification circuit includes both driver and power tubes
  • Driver Tubes: 2x JAN 5654
  • Power Tubes: 2x 6H30EB
  • High quality aluminum chassis
  • Dimensions (Metric): 320mm deep by 220mm wide by 143mm high
  • Dimensions (English): 12.6 inches deep by 8.66 inches wide by 5.62 inches
  • Weight: 3.5 Kg or 7.7 lbs
  • Available in either 120VAC or 220VAC




2-3 Business Days
International delivery delayInternational delivery delay : 4-7 Business Days
110.00 $
Domestic delivery delayDomestic delivery delay 1-3 Business Days
12.22 $

Moderators Moderators

Mario Dian (@mariodian)
Free moderation for a limited time.
serp (@serp)
Moderator Extraordinaire:
Arne Bolen (58583faea4309a562d3f5cc9e8929153720d503a)
English speaking OpenBazaar Moderator. (@bazaarcity)
0.0% offers easy, fast and reliable OpenBazaar Hosting and a free Moderation Service.