HIFI Vacuum Tube Preamplifier Board Electronic Valve Amplifier AC12V DIY Kit

Description:Voltage: AC 12V 0.8ATube: 6J1 6AK5 5654 6AU6Channel: 2.0 stereoMagnification: About 0.85Musical Fidelity X-10 is made in 1990s, with good sound, Its based on X-10 architecture, and make certain optimization. If can softthe sound when used between player with amplifier.Assemble tips:1. No solder tubes temporary, and check all element, not be wrong location, opposite direction, not be joined of all back Sn points.2. Power on, two blue LED lighting, and test dual 28V and 12V are normal.3. Insert tubes, must power off, and must hard to evenly, how do you judge the source of hiss(noise): Short circuit the signal input, then monitor the speaker output, if have no noise, the amplifier is normal, in other words, if the board is connected to PC or mobilephone have some noise, then the noise were from the PC or mobilephone.Package included:1 x Electronic Valve Amplifier AC12V DIY Kit