[Mikremk] demonstrates this with a simple but effective amplifier using a PCL82 triode-pentode. It’s a conventional tube amplifier circuit in which the triode is a preamplifier for the pentode ...

while the other triode-pentode serves as an audio amplifier. The original circuit from which this one is adapted is available online, All in all it’s a neat project, and a reminder that exotic ...

Hi-res audio formats are supported to 768kHz/32-bit PCM and DSD 1024. There are three listening modes here – transistor, triode and ultra-linear – and you can output to both standard and ...