xDuoo TA-26
xDuoo TA-26 is a headphone tube amplifier using 6N8P and 6N5P tubes. It is priced at $319.
Tube Amp
Cayin C9
Cayin C9 is a flagship transportable fully balanced portable tube amp that can output up to a whopping 4.1W at 16 ohms. It'll cost you just shy of $1999.