[RWP] How to clean up guitar amp sim noises?

[Hadi Rezaee]

Hi guys

I know that there are very great members in this MailingList who produce 
awesome content even with limited resources.
I need some advice/instructions about guitar sims, and how can i 
decrease their hiss, and fuzz sounds.
I'm sure that everything  in my physical environment is ok, i got a very 
great cable with a scarlett 8i6 audio interface, so I think from this  
aspect, I should not get any noise or anything.
Here's my REAPER FX chain, that i normally use:

tse tube screamer
Lepou lecto
ReaVerb with some great mesa boogi cabs, (god cabs)

That's all I've got. I have no  noise gates, no EQ, (Because i don't 
know how to work with them.
First of all, when i crank up the input, There's a big hissing sound in 
the background, even when i'm not playing. It looks like a regular amp 
hissing sound, but it's just too loud, and I want to cut this off, so i 
could record without any  hissing noises.
Second, I think the sound is having a little bit of fuz, and is not too 
warm for me.
I want to try to  achieve that big,  smooth warm sound of  electric guitar.
Here's a simple test that you can hear
https://dl.dropboxusercontent.com/u/87868354/Hadi_guitar_tone_test.mp3

Also, by the way, as you see, my  vollume is kind of.. low. if i try to 
raise reaper's master vollume, or the track vollume, i get a very bad 
buzzing sound on the guitar.
Can anyone help me with this?
Thanks!