Friend
The Jolida JD100 like most cd players are what I call recipe engineered. Basically this means they have undergone some serious R&D before they hit the market due to competition, the expense of reproducing the units, and shipping them to be sold. So, what you get is a unit that has been auditioned with various components when it has become a finished product. Now, that doesn't mean it has been auditioned with every component.
What I have found is that digital improvements come in inches not miles like preamplifiers and amplifiers.
Having conveyed my philosophy, I will say that the only area I would even consider is the tube coupling capacitors. It's been a while since I saw a picture of the inside of the JD100, but there are usually one per tube. If I recall corectly - there are two inside the unit. You could remove them and try a few other brands such as Hovland, MIT and Solen to compare to hear which sounds best!
Hope this helps!
The Jolida JD100 like most cd players are what I call recipe engineered. Basically this means they have undergone some serious R&D before they hit the market due to competition, the expense of reproducing the units, and shipping them to be sold. So, what you get is a unit that has been auditioned with various components when it has become a finished product. Now, that doesn't mean it has been auditioned with every component.
What I have found is that digital improvements come in inches not miles like preamplifiers and amplifiers.
Having conveyed my philosophy, I will say that the only area I would even consider is the tube coupling capacitors. It's been a while since I saw a picture of the inside of the JD100, but there are usually one per tube. If I recall corectly - there are two inside the unit. You could remove them and try a few other brands such as Hovland, MIT and Solen to compare to hear which sounds best!
Hope this helps!