Teste de pre amplificador a válvulas muito económico.

Dac: Nuno Silva diy dac
Preamp: Chinese 6j1 valve preamp - banggood, ebay etc. 10$ :)))
Amplifier: Carlos Mergulhão MK4 - https://www.youtube.com/user/destroyersoueu
Speakers: JBL L830 - diy crossover

This is a test of a very cheap 10$ Chinese 6j1 valve preamp.