Availability: In stock


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

1 Review(s)
  • 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


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Sep 11, 2017 12:16:18 AM
I am in Shenzhen now. Any chance I could buy a little dot while in town?
Sep 11, 2017 12:16:18 AM
Hi Bill,Do you want order one?We can ship to you.Thank you.
joe pullano1
Mar 6, 2016 4:29:00 PM
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?
Mar 6, 2016 4:29:00 PM
MK2 is a better choice

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Amos Ken
Jun 11, 2013 8:44:14 PM
This is a great little amp. But there is more! You can swap out the op ap and the tubes to further customize the sound to suit your other equipment and your taste in music. Have headphones that are bass shy? Do you listen primarily to hip hop? You can install an op amp-tube combination to suit. There is a long thread of almost 100 pages at Head-Fi to guide you. I have installed an OPA2107 op amp and NE408A tubes and with my bass-heavy headphones the music is wonderful.

Further, Shenzhen Audio is a class act. They have handled all my questions with courtesy and professionalism. Moreover, the amp arrived here in the states from Hong Kong in about 10 days. So yes, you should buy this little amp... and make it your own.