Little Dot MKIV MK4 JAN5654X2 Soviet 6H30EHX2 Headphone Tube Amplifier + Pre-Amplifier

SKU: FM080
Mid-Year Sales, Was Price: US$364.98
Ends in
377 day
In Stock - Shipping within 48 hours Worldwide Free Shipping
  • Allow use with a wider range of driver tube-rolling
  • Drive headphones whether are 32 ohms or 600 ohms easily
  • Flagship single-ended headphone amplifier/pre-amplifier in the Little Dot MK-series
  • Boasting a SEPP (OTL) in Class-A circuit design filled with high quality components


The Little Dot MK IV adds in user-tweaking options such as two gain switches to delivery maximum compatibility with all your headphones, regardless of impedance or sensitivity. Also available for the very first time in a Little Dot amplifier, is an internal jumper to allow use with a wider range of driver tube-rolling, including the EF92, CV131, WE403A/B, GE5654, M8100, CV4010, EF95, 6JI as well as all equivalents, derivatives, and direct replacements to these vacuum tubes!

Technical Specifications:

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
Neutrik Headphone Jack (SE version only)
Weight: 3.5 Kg or 7.7 lbs
1 Year Little Dot Warranty (2 Year Little Dot Warranty for MK IV SE)
Available in either 120VAC or 220VAC

Customer Questions & Answers


Is it possible to use 6N6P as replacement (i have some of them ) for 6h30?

3/17/19 9:00 AM Asked.

Hi Jan-Ulrich, you can use 6N6P as replacement for 6h30. But the original tube 6h30 will be better than 6N6P. Thank you!

Was this question helpful to you?  Yes   No
  1. 1