Yeah, looks like a mix of different topologies in one amp? BJT, tubes..i don't know anything about this but looks interesting. Reckon it will work and not bust a headphone, or two?
Here's another one with some internal pics :
https://www.aliexpress.com/store/product/Venture-Electronics-Electrostatic-Headphone-Tube-Amplifier/1924356_32417359282.html?spm=2114.12010615.0.0.2c3976acekwIQx