Little Dot I+ 6JI X2 Tube standard Hybrid Headphone Tube Amplifier

SKU: FM074
Mid-Year Sales, Was Price: US$159.98
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  • A hybrid transistor-vacuum tube headphone amplifier
  • Offers versatility and incredible sound quality in a tiny footprint
  • Specifically designed and optimized for driving low impedance headphones
  • Combines the smooth, musical sound of tubes with the high output current of transistors


The Little Dot I+ is a hybrid transistor-vacuum tube headphone amplifier, which combines the smooth, musical sound of tubes with the high output current of transistors. The vacuum tube stage is run in Class-A, the MC33078 operational amplifier (socketed) provides voltage amplification, and BD139/BD140 transistors serve as output buffers.

Technical Specifications:

Input:Gold-Plated Unbalanced Phono (RCA) Jacks
Output:1/4" Gold-Plated Stereo Headphone out
Replace standard tubes with EF92 - additional $20 USD
Replace standard tubes with WE408A - additional $50 USD
Frequency Response: 10HZ - 50KHz (-3 dB)
0.2%: 1Vrms @ 1000Hz
0.6%: 3Vrms @ 1000Hz
1.0%: 5Vrms @ 1000Hz
Signal-to-Noise: 92dB
Suitable Headphone Impedance: 8 - 600 ohms
Input Impedance: 50K ohms
Power Output:
150mW @ 300 ohms
300mW @ 120 ohms
800mW @ 32 ohms
User variable gain settings: 6.5x or 3.25x
Power Consumption: 15VA
Metric: 180mm (L) by 97mm (W) by 100mm (H)
English: 7.08 inches (L) by 3.81 inches (W) by 3.93 inches (H)
Weight: 1.5 kg or 3.3 lbs.
Available in Black
Available in either 120VAC or 220VAC
1 Year Little Dot Warranty

Customer Questions & Answers

joe pullano
joe pullano

will this be a good match for my sennheiser hd 600 which are 300 ohm headphones. will it drive them to satisfactory sound levels? is the MK2 a better choice?

3/6/16 4:29 PM Asked.

MK2 is a better choice

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I am in Shenzhen now. Any chance I could buy a little dot while in town?  

9/11/17 12:16 AM Asked.

Hi Bill,Do you want order one?We can ship to you.Thank you.

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