Despite the oldest solid state audio circuitry now qualifying for a pension and a bus pass where this is being written, the thermionic tube retains a foothold in the world of audio — cherished by ...

The project was designed using 6T9 vacuum tubes to build an amplifier device that operates in Ultra-Linear (UL) mode. The tube amplifier circuit works better in Ultra-Linear mode which used to operate ...

It will take a much better command of written Japanese Korean than my paltry non-existent skills afford to suss out full details on Gakken's vacuum-tube iPod amplifier, but damn, this looks like a fun ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Half a century ago, vacuum tubes were very common in audio ...

The circuit uses the functionality of vacuum tubes to create a stereo amplifier that may be used to amply signals coming from different sources such as CD or mp3 players. In dealing with this circuit, ...

If you think all high-end products are stupid expensive or mammoth monstrosities, the MiniWatt vacuum tube integrated amplifier should change your mind. What differentiates high-end gear from mass ...