Scheda preamplificatore valvolare regolabile 6K4 kit fai da te per sistema amplificatore home audio
Model Number: 6K4 Tube Preamplifier. 1 x 6K4 Tube Preamplifier Amplifier. Multiple Input Options for Various Audio Sources: Connect and amplify various audio sources such as smartphones, CDs, computers, TVs, and MP3 players.