Doctor Xin is a different/unrelated company/builder. Xin takes months to almost a year to deliver orders. Xin is not Robert. Those who waiting Xin amp, post and get your date of arrival
Robert runs PenguinAmp and Headstage (for some reason he still uses Headphonia). Any way, a couple of months ago Robert found someone in CA to warehouse the amps, but it seems there has been a big jump in orders that I assume weren't anticipated. So, the buffer (warehouse) must have run down. He builds these alone, is my understanding.
I have ordered 3 amps from Robert, and they took as long as 17 days to arrive. He has always responded within 48-72 hours for me, so I assume he is trying to build a backlog of amps and is now slow responding. If he is selling on eBay and his website, he might be getting confused about how many are left. I do also recall he was resuming some of his studies.
As for the "other" issue. I discovered after I had bought my PenguinAmps from Robert, that his original Headphonia amp circuit topology was taken from a meier porta corda III. Robert went through the ringer publicly with Jan Meier, and ended up offering to buy back all the amps that had the cloned internal circuits. His current amps are his own design (may include public domain like his crossfeed), but the event tarnished his reputation here. From discussions with him, I believe he is trying to put that behind him and do good business. I know when my Lyrix came with a different knob than on the photos, he unexpectedly sent me the correct volume knob later without my asking.
I still don't believe he is trying to rip anyone off. Here is a portion of my last email from him in November, showing that he IS concerned about the public's impressions.
|Yes, you are right. I hope I can be clean in future. I know headfi guys have an eye on me. BTW, I am just moving my warehouse to California for faster shipments.