Help choose best amp/preamp combo?


Hi there
I am new to audio forum.Helo every one here can help me.I do build a 2 channel stereo with JBL sub.here is my system :Parasound a21 amp + Emotiva xsp1(gen 2)+ pair of B&W 805 Nautilus.To be honest, I do loved the sound system very clear and crisp on high and midrange with powerful bass tights.but it is LACKing of Warm sound.I do loved the warm sound is top priority.couple months ago I do have Rotel 1095 amp pair with Rotel rsp1570 + b&w cdm1 Nt sound is clear crisp and WARMER but sound is THIN compare to Parasound.but Rotel sound is warm which I like much.I also heard that Parasound a21 is warm sound too.but in my taste it is not.my question is the amp do produce a warm sound or Pre-amp produce a warm sound or the speaker do make the sound warm?I am confused and I want change my system to Rotel rb1582mk2 + Rotel rc1580 pre-amp because I heard that B&W speaker and Rotel is relate to each other and their product is matching together in sound.especially BW speakers is sound good with Rotel amp.is this true.and how you guy advised me to keep Parasound a21 and changing Pre-amp to either Parasound P5 or Rotel rc1580? Or go full system with Rotel like Rotel rb1582mk2 + Rotel rc1580?I am confused now and need your help.Thank You in advance.
128x128luckyrainbow63
The "record out" on the JC2 is not meant to be a normal preamp output.  It is outputting the signal at full level.  There is no "volume" adjustment for this.  The "record out" is meant to be used by a recording device (like tape recorder).  I missed the fact that you are using a JBL sub.  You will probably have to buy a "y splitter cable" so that you can use the same output on the JC2 for both the sub and the A21 amp.  It's best to get an XLR splitter cable, and then get an XLR-to-RCA cable for the sub.
You mean use Y splitter in order to split in 2 then I apply both "rec out" instead of one rec out like what I do right now?
No.  Do not use the "Record Out'.  Only use the "Main Outputs".  I took a look at the manual and it looks like there are 2 Main Outputs.  One XLR and one RCA.  You should be able to use both.  XLR for the amp and RCA for the sub. 
Lucky:

You are not so lucky looking for the warm, lush and full sound.
I am working on that issue currently & it's a whole big learning curve

My thoughts are to start with cheaper options first

1st)  try electrical outlet upgrade and/or power cable upgrade
        It really does make a difference $200_$500
2nd) try a good high end OF between other and power amp
        $300 or,so 
         SPEAKER CABLES GET REAL PRICY

Then evaluate the changes, you will be surprised!

Ps: Just got a Pass Lab class a from a class d amp ( the class d actually sound like a parasound) The pass really does what people say and gives you the full & tonally rich sound

Good luck, you'll need it

Jeff
Lucky, good find on the JC2!  I've got the A21 with a P7 from Parasound.  I concur with auxinput that you only use the Main outputs of the JC2 for the A21.   

Hopefully you have XLR cables to go from the JC2 output to the a21 inputs?  They look like this:  
https://www.amazon.com/AudioQuest-Diamondback-audio-cable-stereo/dp/B000ETSYUK/ref=sr_1_3?ie=UTF8&am…
Also, could you list what brand speaker and RCA cables you are using now?