Yes, Don Allen fabricated some really nice amplifiers in Arizona some years ago before his death. This is a listing for a pair of his EL84 powered monoblock amplifiers. Hammond transformers and Sprague capacitors are evident (see pics), it’s a very simple but great sounding circuit. The name Don Allen is rather unknown, but a Google search and some time on the single ended triode sub forum over at audioasylum will reveal some fans.
This listing is for two amps (left, right) with all tubes, they put out about ten watts. I used them to good effect with some Zu Omen speakers, 96dB sensitivity, 12 ohms impedance or so..
There is a slight hum in the transformer of one amp (not through the speaker), it goes away after the amp warms up for a few minutes.
$500 for the pair, including shipping in the U.S. via FedEx ground.