Not really a pedal but I finished it few days ago and people tell me its useful. So why not show it ?
Name: THofmann aka Thomas_H :-)
Pedalname: Purity aka All-In-OneProject Documentation (incl. schematic etc.): http://diy.thcustom.com/?wpdmact=process&did=MzEuaG90bGluaw==Documentation of the power amp: http://diy.thcustom.com/?wpdmact=process&did=MzIuaG90bGluaw==What it does:I wanted to have a tool to do high quality recording of effects on one side and a solution to practice to playalongs on the other side.
The all-in-one took 3 prototype PCBs and more than 3 months to get everything as I wanted it to be.
A very nice side development is the 10W power amp that runs on a 9V supply, is very small in its dimensions and sounds really good.
Specifics:• tube input preamp
• Input gain control
• FX Loop
• Wet/Dry Mixer (Its a panner actualy, so you can have 100% wet only)
• aux in and aux volume control (connect your favourite mp3 player)
• buffered amp out with volume control (selectable Mix or FX-loop only)
• wide range single knob tone control.
• Frequency correction withSpeaker saturation control (can be bypassed)
• recording out volume control
• Mic-a Mic-b and line-level output for the recording Signal
• symmetric line out for XLR connection (DI-Out)
• headphone amp
• power amp 10W
for a better understanding here is a schematic with building blocks and signal paths:

and some pictures of the actual build:
Outside:

From the back:

Inside:

What is what:

And a short demo of the tonecontrol and filtering abilities:
https://soundcloud.com/th-custom-effects/all-in-one-recording-mixingStereo simulation demo:
https://soundcloud.com/th-custom-effects/headphone-amp-stereo