Apparently dragon aka lketc is not the only factory making A1 1Ths miners, There is a few and every one uses the same board and parts, they are all assembly factories. We do have 1200W and 1000W power supply models, depends the supply and availability, both are from the latest batch guaranteed. If you have a special requirement you can put that down when making the payment. Dragon is popular because their supply chain is bigger. Shipping directly from China.
Thanks