Hello! I have recently been wanting to buff up my amp with some new textures, and I was wondering it is redundant to place a preamp before an amp head, or perhaps more specifically what this would do to my sound. I own a Thunderfunk 750a and absolutely LOVE its sound, its power, etc., but recently have been wanting to expand it a little bit. I was looking into either a Demeter VTBP-201 (I am a big fan of Justin Chancellor and have heard that a lot of his 'shimmer' comes from this preamp) or a Aguilar DB 659 for a more tubey, upfront sound. So my question is: could I add one of these preamps to compliment my main head and ENHANCE its sound, or would I effectively be bypassing the tone controls of my Thunderfunk and only using it as a power amp? Thank you for the help!