Yes, if it sounds anything like Prima Luna, it would be a major disappointment. But, until I hear one, I will withhold judgment. There is a lot of things being said by Western Electric that is suspicious. They talk about the single ended 300b “sound” of the amp, but do not declare that it “is” a SET. The circuit, which someone posted looks more like a shunt regulated pushpull variant than single ended. There is a cap blocking dc current from flowing through the primary. This accounts for why it can make do with puny transformers. But in the end, it doesn’t matter what is the topology if does sound good. On that front, I expect it to sound good because Western Electric, whose primary investment is in tube making, is staking a share of their reputation on this amp.