I used a Ming-Da MC34-B integrated amp in my small office system for a few years: 22 wpc, 2 inputs, 4 SED 6L6GC power tubes with 2 Russian military 6NP1 and 6NP2 signal tubes. Nice sound, reliable (no problems)with substantial iron transformers. Good value for the price. Kept it for my back-up amp for my home system.
For a period, Ming-Da had a problem with reliability mainly due to gray-market amps that did not meet their normal quality control standards. But otherwise they are generally well designed and well-built for their price range. My only problem was you had to bias the power tubes from underneath the amp, which was a hassle.