Hello all ! I've been busy doing some eagle "practicing" be cause its fun so i tried to copy and make a PCB out from Marshall Clean channel "8080 Valvestate" i need an advice too how can i make it to single supply? is my schematic corrert? from here http://www.drtube.com/schematics/marshall/pc0689.pdf

[attachment=0]Ruby.pdf[/attachment]

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Hi all I did this layout mod to my ruby... but i have some problems and confusions...

1. which "VOLUME" can i eliminate and how can i do that? example if the 10k volume so 47n + 10k to the ground?
2. is this the right place to insert the tone stack? or put it in pin 5 = pin 5 - the 18 watt tone stack - 10ohms to the ground 220 uf - Speaker?


Thanks in advance

A2