Is it a good idea to buy CD players over 10 years old even it is a reliable brand?

Hard to image.  Long time ago (30 years), my friend is an audio maker and dealer, he had one Sony CD player, the sound is hard and dry......

At that time, he also imported Magnavox CD player and re-tool with some parts such as condenser and  power line, and selling at double price when compare with import cost.   Of course is better than original mfg.

As long as you can still get new lasers or pickup`s for it, why not.

REGA ISIS or ISIS VALVE cdp/ DAC 

Each unit produced had its tech test and archive not one, but two spare laser units. I think it’s safe to say that the ISIS will last longer than most of its owners and one can appreciate appreciate this attention to detail, with CD transport mechanisms getting scarcer all the time.

For 3K you can get a very nice brand new or gently used CD player, whose sound will be very competitive and which will be guaranteed to keep playing a good deal longer.

I would make sure that replacement lasers and transports are available. I bought a used Esoteric player last summer and it would not play hybrid sacd’s. Fortunately, I also bought a Square Trade policy. They paid for a new laser mechanism and the labor to install it. I would recommend that you get a Square Trade policy or something similar, if possible.

You should also be aware that some Esoteric models need to be shipped to Japan for repairs. I don’t know what the deal is with Accuphase. If you are still considering the X-05, I would call TAP Electronics to see if they can do repairs to that particular model at their California location instead of shipping it to Japan.