Excellent! Friendly & helpful seller. This is the second one I have purchased as I was most impressed and satisfied by the amazing sound quality. The first one I purchased is still working very good. It is also highly modifiable with plenty of room to swap out coupling caps and upgrade the transformer with an R-Core one available on Aliexpress (230v AC- 170v AC (x2) & 6.3V AC(x2). Power caps should be upgraded to Nichicon 250V or higher voltage. The black perspex housing looks stylish and is professionally done - no flaws and neatly finished. This works perfectly out of the box. I highly recommend using the Russian military 6N3P - E tubes. I have tried a lot of US NOS tubes and the Russian ones win hands down. Powerful bass, good mids and clean highs. I'm very happy and tempted to purchase another one of these preamps whilst it is still available.
Professional seller, very fast shipping. Item has been very carefully and safely packed. Arrived in good condition. The device is very well made. It has a great sound and I'm very happy with it.