Now my Nutube headphone amplifier kit on-sale

A project log for Amplifier project by Nutube, a new vacuum tube!

You know VFD, but may not know this VFD. It can amplify signal!! Yes, it is a TRIODE!!

kodera2tkodera2t 09/26/2016 at 21:540 Comments

Now the kit including all parts are on sale at, please don't miss it if you have some interest for it! Initial 4-unit will be shipped immediately and another 4 unit will be shipped in a few days.