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Guitar Tube Pre Amp

I've listed all parts youll need here. http://www.instructables.com/id/Guitar-Tube-Pre-Amp/
Mic Preamp, Power Supply and Electronic Kits Home > Electronics DIY Projects

Five Fish DIY

http://www.fivefish.net/diy/

cool looking diy projects/ preamp kits by maxkracht Jan 12

191855-anyone-tried-golden-age-project-pre-73-a-5

Hi Guys, I received my GA73 about a week ago. Since I have serviced several Neve 1073 modules and Neve consoles I was excited to open up the GA73 and have a look inside. What I saw impressed me and I am sure it would also impress Rupert Neve himself with how closely the circuit follows the original 1073 drawings that I have from 1973. http://www.gearslutz.com/board/low-end-theory/191855-anyone-tried-golden-age-project-pre-73-a-5.html

Goldpoint Level Controls

Idea for future studio - have a few of these step attenuators as patch points on my bay.... Add after a mic for pre's without pad switches, add after a pre to tame the output if im going for transformer or tube saturation. by maxkracht Feb 1

A question that pops up frequently is that of building atteunator pads. Here is what you need to know, in one place. http://www.uneeda-audio.com/pads/

Uneeda Audio - Build your own attenuator pads

Make a Rack! / HomeRecording.com

Original Article by Kent Williams: http://homerecording.com/make_rack.html
http://recording.org/diy-pro-audio-forum/40934-fairchild-670-readable-schematic.html

Fairchild 670 readable schematic

Here goes:- 1 V303 does not have the control grid tied to the suppressor grid & the cathode. It is actually pin 2 (a screen) that is strapped to the cathode & suppressor grid .