quick back story - I used to play upright to slab pretty much 80/20 (high school - college) then with it switched to about 1/99 sad times for my 1890 czech flat back sad times indeed I can hear it whimpering in the corner for some love... back in the day I was pretty good with a simple rig underwood + GK400RB + SWR Golliath JR now I have been dusting off the upright webs and need to look at what I have available to amp my bass. my inventory: slab rig: Aguilar DB750 GS112 x 2 possible upright items: GK400RB (late 80s model, tried true) Underwood Realist Shure SM57 misc. items Behringer XENYX 502 - mini mixer Aguilar DB924 - outboard pre as with many others... times are tight and I really can't invest a good amount for any big items but I'm thinking I can use 1 of the GS112s w/ the GK400RB and... I dig both pickups but I feel/know I'll need a more specific upright pre given my this inventory will I be good w/ just the TB'er built HPF pre or will I benefit to save up for a more robust tool like plat pro? I'm open to other possible suggestions. Thanks.