Preamplificador de tubo de vacío HiFi preamplificador de audio estéreo 12AU7 6N2 6Z4 6N4 tubo pe66

HiFi Vacuum Tube Preamplifier Stereo Audio Preamp 12AU7 6N2 6Z4 6N4 Tube Ref Shigeru Wada Circuit. Tube: 6Z4 2, 6N2 4, 12AU7 2, 6N4 2. 1 Set of Tube Preamplifier. The circuit of this tube preamp is inspired by Shigeru Wada Circuit.

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