Vacuum tube stereo headphone amplifier with no need for an external power supply!Designed by microwavemont, Ships from Japan
What is it? Fully Lipo battery driven headphone amplifier. Input and output are simple 3.5 mm analogue audio. 1950's twin triode will bring you a wonderful vacuum tube experience. Why did you make ...Read More…
Fully Lipo battery driven headphone amplifier. Input and output are simple 3.5 mm analogue audio. 1950's twin triode will bring you a wonderful vacuum tube experience.
I've made several things using Nutube and tubes. As for the audio amplifier, most of them are limited to USB DAC embedded version but a customer asked if I can make a more simple analogue I/O version. I quickly made a prototype of it and confirmed its wonderful performance! No way!
Fully Lipo battery embedded. On board USB connector is connected to onboard Lipo battery charger. If the battery gets empty, you just need to connect USB cable to PC or AC/DC adaptor.
Lipo has just 3.7V but onboard voltage booster generate more 30V, which is well enough to drive 3A5, twin triode made in 1950's.
Single tube of twin triode 3A5 works as 2ch stereo headphone amplifier.
This item is fully assembled and checked (no kit version). Default is "with Lipo battery" but some countries will not accept parcel with Lipo (for example, Italy and Germany.. The prohibited country list is available only in Japanese at Japan post, so please confirm with me before ordering if you are not sure. If Lipo-prohibited country, please select "without Lipo" version for ordering and get Lipo battery cell from your local reseller.
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Japan Post: e-Packet
Gregory | Aug. 16, 2019
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