Mid-fi integrated tube amp advice

I just ordered a Yaqin MC-13s Push-Pull arriving this week.  Searched this forum and others for feedback on it.  Most of it was positive although admittedly there wasn't a ton.   Not much in the way of professional reviews either.   I haven't seen much action used in the last month or so since I've started researching them.  Hoping that's a good sign.  

From what can tell the 13s is Ultralinear only, no Triode mode.  Ordered mine from Amazon.   Will know for sure tomorrow when it arrives.  

Yaqin arrived yesterday.   Unpacked, biased, and connected in short order.   Listening impressions later but I’ll say this unit is solidly built and nice looking.   Mine came with tubes installed but biased high across the board.   No complaints cosmetically, everything in good order.

Although I've had serious audiophile amps in the past, my system was running off a Yamaha Aventage RX-A 1020 home theater receiver the last 10 years.   It's actually pretty good for home theater purposes, but I instantly concluded the moment the first song was played through the Yaqin that I'm hearing these familiar songs for the first time in a decade. What I heard before was a shadow or reflection of what the artist intended.  The Yaqin was so much more musical, even right out of the box with zero break-in. The presence, the soundstage, the richness of tone are miles apart.   Air and instrumental separation I haven't heard in years.   Back in the day I had an excellent YBA Integre' and a pair of Epos ES-14's that really clicked on vocals.    The Yaqin and my recently acquired KEF Q100's brought me back to the qualities I so fondly remembered from that system.   If you are moving from an AV amp to a Yaqin like I did, you're going to be floored.