I have a brand new (from Parts Express) Yung model SD200 (no boost model) 200 watt plate amplifier. Will ship to you in sealed double box as it was shipped to me, and still unopened. No issues. I decided to go in a different direction and will not need it.
Here's the manufacturer's specs:
http://www.parts-express.com/pe/showdetl.cfm?partnumber=301-504$90 including PayPal fees and ground shipping to lower 48 only.
For fastest response please email me at: cunundrum@yahoo.com
Thank you,