DIY Tube Preamplifier Dual Boards supplied separately class A power
This video demo music playing of a DIY tube preamplifier, it build in dual boards that supplied by separately class A power supply board.
This is IWISTAO's Blogger,and for IWISTAO HIFI MINIMART, which is about Tube Amplifier,Output Transformer, Power Transformer, Speaker enclosure, and Bluetooth Technology, HIFI Audio and related accessories and the information like as Bluetooh Speaker, HIFI Bluetooth Earphone,HIFI Bluetooth Audio, HIFI Bluetooth Tube Acoustics,, and other populor electronics consumer products,.etc.