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.