21+ Preamp Tube 6J1 Pics. About 1 times board size: What plate voltage do you get at 12v and what are general thoughts on these 6j1 buffers?

6J1 tube preamp with tonal preamplifier -in Amplifier from ... from ae01.alicdn.com

There are few versions, i got the blue one in the pic here. 2020 popular 1 trends in consumer electronics, tools, electronic components & supplies, sports & entertainment with 6j1 preamplifier tube and 1. The nobsound hifi 6j1 vacuum tube preamp.

To get the idea of tube sound and how tube preamps works, i got this cheap kit for experimenting:

Need two filament tube is connected in series with a dc filament also in order to reduce the noise. That's why i will be using it in a stand alone phono preamplifier, which is based on the phono section of my octal preamplifier. Free delivery for many products! 100mm * 50mm the board must use two independent winding 12v transformers.