Hissing sound when Tone Control is turned on

Juicy good my friend, you found an answer.. Parasound, that is another under appreciated amp.. I have a ZPre3 I use with a C20 to add a remote control and all the goodies of an OK DAC via a tape loop.. Just needed to do a little matching.. Even added a sub out option, still sounds like my C20 100%, serious little preamp.. GREAT phono stage MM MI and an MC with 56 db of gain.. (52?) It has a wonderful bass contour for the phono/tape section.. attenuated bass step baffle. 

I hate noise.. LOL 

Regards

Overall i have to patiently tweak and find the best matching gain levels between my MAC C49 preamp and Parasound A21+ amp.

Here is a thread found in AVS Forum, members were also discussing the similar topic : https://www.avsforum.com/threads/parasound-owners-thread.1122095/page-332

Get gear without tone control... apart from L/R balance you should not need any

Crack me up.. Of course there is a reason for tone control. That's why the OP opted to have it just like me for the last 50+ years.. You don't need it until you do.. LOL One a month or so always ask "I need a bass boost, or they are a little boomy on certain albums"  It really doesn't matter.. When you need it.. You need it.

AND no I don't want to know what it sounds like live.. That's usually REAL bad... so... Tone control...  You get in your car you don't adjust the tone control? BS yes you do and or you did or it auto sets the tones to some preset EQ.... No Tone Control is just a CHEAP way to make a piece of distribution equipment, nothing more.. Not because it sounds better. The purpose of a preamp is to color the sound...

I don't care what anyone else thinks, that is what they use to be made for and what I still use them for.  Somethings just never change..

Regards

Ha! I haven't used a tone control since 1987. Never found a need to "color" the sound. Each to his own.