I just foun this thread. My name is Joshua and I am the founder of Stam Audio.
If you have any questions regarding the SA/4000 or any other product feel free to reach me.
I know it sometimes cheap units are to good to be true but this is not the case, I use 1% resistors, Panasonic capacitors, THAT 2180CL VCA's, Sifam knobs and Vu meter, etc..
All our units have only the highest quality components in the audio path. I take no shortcuts, we just get a huge disccount when buying in thousands of parts which makes this all possible. The other trick is that we dont use retailers nor distributors, so that does not add 30%-50% to the final price and finally but not least we operate with sall margins and work very long hours to produce a lot of units.
Each unit is calibrated and sealed by me and I give them a full health check, we also haves techs in Europe and North America, should anything go wrong during shipping or any problems arise within a year of your purchase. We cover the bill and shipping towards and back to our engineers, units get serviced within 72 hours normally, this way you can buy with some level of confidence since we are so far from each other most of the time.
Anything I can do let me know
Joshua van der Stam