I just stumbled across the 6N17B pencil tube and it looks intriguing as a phono preamp input tube as it has fairly high mu and reasonable input capacitance. I suspect that it might also be fairly free of microphonics.
I suppose that these types of tubes might be inconvenient having no base but I suppose perf board could be used. Pencils could be a very interesting subspecies to play with.
I suppose that these types of tubes might be inconvenient having no base but I suppose perf board could be used. Pencils could be a very interesting subspecies to play with.
I have used them. They are nice and quiet with reasonable transconductance for low level amplification.
The military grade valves have a life of 2000 hours.
If you use Wago connectors, they are easily interchangeable.
They are also useful in effects pedals for guitar use.
The military grade valves have a life of 2000 hours.
If you use Wago connectors, they are easily interchangeable.
They are also useful in effects pedals for guitar use.