Korg Nutube was introduced first time more than 2 years ago. But yeah, due to quite busy life, I was not really tempted to try this stuff until I got chance to see myself and decide to grab one of this. So here you go, Korg Nutube with also it’s Evaluation Board.
In general Korg Nutube is a Directly Heated Tube by adopting Noritake Itron Corporationâ€™s Vacuum Fluorescent Display (VFD) technology. So it’s not your 50 years old vacuum tube from WWII. So this new technology also can extend the lifetime up to 30.000 hours. I can say, it’s 21st century tube technology.
Here is the datasheet link.
It has 0.6-0.8 VDC filament voltage (typical 0.7 VDC) and anode voltage between 5-80 VDC, for sure this is not your ordinary vacuum tube. Filament current itself between 16-20 mADC (typical 17 mADC), while anode current around 32 Î¼ADC (yes, micro Amp). Amplification factor (Î¼) around 14.5 with trans-conductance (gm) around 54.
Below is basic schematic from the datasheet.
And also a nice curve…
Looking forward to hear how does it sound. I’m not really expecting too much, but well, this should be another new experience for such new technology.