AH Njoe Tjoeb 4000. Is it bad idea?

This is a pretty system dependent question. I suppose too many tubes could impart excessive warmth, but I also think it depends on what those tube components are. In my system, I decided against a tube digital front end, since I was already running a tube amp and preamp, made by the same manufacturer, that is known for a fat and warm house sound. I tried a couple tube CDPs and did find that the music was a bit too fat and warm for my tastes. Might the result have been different if my tube amp and/or preamp were from a different manufacturer, possibly, but at the time that is all I had to go on.

If possible you should get the Njoe Tjoeb on a trial basis and check it out for yourself. Upscale Audio offers a trial period with a 10% restocking fee. A small price to pay to guarantee system compatibility. Also, I noticed Upscale has a used Cary 308 (not the 308T which is the tubed version) for $899. Not a bad deal for an excellent CDP. I have also heard good things about the Onix CDP which is in your price range. I believe Underwood Wally sells them and I think he also provides a trial period. The only way to truly find out what is best in your system is to sit and listen.

I don't think that you will find the Prologue II to be overly warm,that is not the PrimaLuna "house-sound".It has good tonal color without excess.I believe the CD player will complement it.However,I like the Gamut much better-probably want to buy the MKII version.The original unit cannot be left in continuous repeat or pause without burning out the drive motor.You can tell it was designed by a music lover,and there are some inexpensive mods that will further its' performance.

I love my NT 4000 with upsampler. I play it through a Creek 5350SE and Von Schweikert VR-1s and REL sub in a small room, near-field. I have compared only to my Classe, by swapping it in and out of my other system. Clio09 is correct. It sounds different in different systems and in different rooms. I don't think it is very warm. I describe it (through my system) as detailed, not brittle, with a nicely balanced midrange and transition to bass. A good deal for the money, but now there are many others to choose from. My opinion: It is more important which speakers you pair it with, than the electronics, at this price range. Good luck!