The Ah! Njoe Tjoeb 4000 CD player is a good sounding unit with two 6922 tubes. It is modified from a Marantz unit. It costs $699. With OEM tweaks including upgraded AC cord, feet, mat, and tube dampers, it goes for $847. An upgrade with 24/192 upsampler board adds $349, and you can customize the sound with LC Audio/Analog Devices op amps for $27/pair or Burr Brown op amps for $44/pair. It's sold online at www.upscaleaudio.com. I bought a plain vanilla 4000 for one of my systems a couple weeks ago, and it sounds pretty good. It also has kudos from various reviewers. Of course, these are prices for new stock. You might get a better player used for the same price. Good luck.