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		 I think it would be worth buying/borrowing a book specifically about audio electronics, it's a big subject. 
 
As an exercise you could try constructing one of Maplins more complicated amplifier kits.. that certainly stretched my electronics fault finding skills to the limit! 
		
		
		
		
		
			
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				pain is inevitable but misery is optional - stick a geranium in your hat and be happy
			 
		
		
		
		
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