So, I am gonna put this in "humor" because... well, in a sad way, it certainly seems funny.
Y'all likely know of this legacy of "hybrid" vacuum tube/solid state amplifiers of low price and ill-defined provenance that feature rather random choices of vacuum tubes. The main issue with some of them (perhaps many) is whether the vacuum tubes in the amps actually
do anything to the signal.
PartsExpress has a new, top-of-the-line model that certainly stretches credulity.
Dayton Audio HTA200 Integrated Stereo Hybrid Tube Amplifier 200 WattsDayton Audio HTA200 Hybrid Tube AmplifierThe perfect solution to bring the rich sound of a tube amplifier to your home audio setup; the innovative design of the HTA200 combines the best of both worlds – the classic sound of...
www.parts-express.com
Check out the claim for the "6H2 pentode" (assuming it is in fact a
pentode and not a rectifier)
EDIT: well, it looks like the 6H2 is a twin diode, but not a
high voltage rectifier for power supply use. Rather, it's a 6AL5-like twin diode for radio detector use. mmmm...
Tube 6H2_China or Röhre 6H2_China ID57803, Double Diode, Miniatur-7-Pin-Base B7G, USA 1940 and Detector shown. Radio tubes are valves.
www.radiomuseum.org
View attachment 299121
PS What if anything is under those two "transformer covers" on this amplifier? It does
not have transformer coupled outputs. It probably doesn't have a linear power supply, either.