Unknown pre-amp...Any thoughts on it?

Well this interesting thing popped up on a local audio sale page. ($488) No info just a couple pix. (I have requested more info). It's likely from Japan and I'm pretty sure the seller will know nothing about it. Home-made? I am curious what you might think about it. I am not an engineer type, but am very curious what's going on here!. UPDATE... He says"" It work . This design same Audio note but AudioNote upgrade power tube 1 more and improve tube pre for 2 right n left"".....He seems to be saying it's based on the Kondo M7, but is better!
 

Attachments

  • tango.jpeg
    tango.jpeg
    58.6 KB · Views: 127
  • tango2.jpeg
    tango2.jpeg
    34.7 KB · Views: 121
  • tango3.jpeg
    tango3.jpeg
    46.7 KB · Views: 128
Last edited: