the improvments from V2 to V3 are :
-different values of tone stack componants for more tuning range 8)
-new power and output transformer : custom and "made in france" 8O
- power supply with LC filtering for lower hum
-power tube range from EL84 and 6V6 to KT88 at 100% bias! (check the pinout and socket if different than EL34) 8O
- new stand-by wiring for a smart switching (capacitor pre-load at 20V)
- onboard security LED, red light when high voltage is present!
- still low cost : 179 Euros at tube-town, germany this include cahssis, transformers, tubes all the hardware exept knobs and tools. you must also add the shipment.
but
- the kit does not include the "chiken head" knobs anymore, you have to add the knobs you like to your ordrer
- nor stand-by light
- not yet "building instructions"
the G5v3 schematic :
http://www.projetg5.com/Projets/G5/G5V3 ... cielle.pdf
add-ons Kits are coming :
- line out with analog speaker simulator,
- "variable bias system" for an easy and fast bias adjustment when changing tubes,
-tremolo,
-mmm.... let us finish that first...

layouts are coming (minor changes from V2 in tone stack and power supply boards but 3D-design

power supply board 2D
http://www.projetg5.com/Projets/G5/G5V3 ... alimv3.pdf
power supply board 3D and viewer
http://goofaman.free.fr/papa/solidworks ... alimv3.rar
temporary file for audio board 2D (still at work)
http://goofaman.free.fr/papa/solidworks ... uille1.pdf
temporary file for audio board 3D and viewer
http://goofaman.free.fr/papa/solidworks ... 3REV03.rar