Sorry to confuse you man.
You stated that you want to add a tube phono preamp. I would start with this purchase. A phono preamp is different from a normal preamp, in that its only purpose is to take a signal from a turntable and apply the correct EQ and output that signal to a regular preamp.
A normal preamp is a device that you connect your audio sources to. It has the ability to switch between inputs and apply gain to the signal it is processing. Lets say, for instance, that you want to listen to a CD. You first set your preamp so that it is switched to the CD input. Your CD player outputs an analog signal (if you use the RCA stereo plugs) to your preamp. The preamp then takes this signal and, as you turn the volume knob, adds voltage to the signal from the CD player and outputs this to a power amplifier. The power amplifier then adds a LOT more voltage and increases the amplitude of the signal (more amperage) and then sends this highly powered signal to your speakers. You have music.
Now, an integrated amp (such as the Jolida 202A that you mentioned) are a stereo preamp and a power amp in one unit. The small RCA connections on the back of the integrated amp are connected to the preamp circuits which are then connected to the power amp circuits in the same box. Your Denon Reciever (we're ignoring the video stuff right now) is also a preamp and a power amp (a multi-channel power amp and multi-channel preamp) in one unit. The thing that makes it a "receiver" is the fact that it has the ability to de-modulate FM radio signals and act as a radio reciever. Therefore, when you plug your CD player into your Denon, it connects to the preamp in the Denon, which, as you turn the volume up, adds voltage to the signal and sends the slightly amplified signal to the power amp section of the reciever, which then gives the signal a big boost and powers your speakers.
Let's hope I explained that well enough. Now onto the issues...
Because an integrated amp such as the 202A has both a preamp AND a power amp, it can adjust the volume of its output. This is unlike a CD player, which has no volume adjustment, it only outputs a straight up very low voltage signal, the source material determines the the levels the preamp sees. If you were to connect your Denon preamp outs to the inputs of an integrated amp, then you would have two preamps that you would have to control. Because of this, it would be very easy to overload the inputs on the Jolida integrated because of the extra voltage the Denon is outputting from its preamp output. Preamp outputs are designed to go directly to a power amplifier, not to another preamp. Similarly, preamp inputs are designed to recieve a low level signal from a source component like a CD player, not another preamp.
So this is why I said you needed power amps. Power amps have no volume control of their own. The volume they output to your speakers is determined by the voltage that your preamp sends to them. If you would like to have tube amps for all of your speakers, then you should look for stereo or monoblock tube amplifiers, not integrated amplifiers. That way, you can use the preamp outputs of your Denon to feed them a signal.
Since you said you would also like to get a phono preamp (I assume the Jolida JD 9A), I would say go for this first. It will sound much better than your Denon's phono section (not because of the tubes, though they help, but rather because of its dedicated nature). Start with the phono preamp. Connect the outputs of the phono preamp to an auxilliary input on the preamp section of the Denon (NOT the Phono inputs), and see how you like the sound. If you still feel that you want some more tubey sound in your system, then you need to look at stereo or monoblock Power amps, such as the Jolida 3000A amps. You would then connect the preamp outputs of your Denon to the inputs on the amp, then the amp to its respective speaker.
Is this all clear? Sorry to be so long winded, but I wanted to be thorough.
