lordpankake Posted May 11, 2014 Share Posted May 11, 2014 Hey there, I recently bought an Ashdown head (second hand, might have been a bad idea), and now whenever it is turned on it outputs a very loud hissing noise. All the posts I could find about it online said it was only present with the valve drive on, whilst mine is ever present, valve drive or not. Does anyone know of anyway to stop this hissing? Thanks. Quote Link to comment Share on other sites More sharing options...
BruceBass3901 Posted May 12, 2014 Share Posted May 12, 2014 Is it present with the EQ disengaged as well? Quote Link to comment Share on other sites More sharing options...
FinnDave Posted May 12, 2014 Share Posted May 12, 2014 Ashdown have a very quick turnaround n servicing, I'd get them to check it over. My evo II has no hiss, valve drive in or out. Quote Link to comment Share on other sites More sharing options...
spud19870 Posted May 12, 2014 Share Posted May 12, 2014 Id second the above post. Get it serviced through Ashdown Quote Link to comment Share on other sites More sharing options...
Jono Bolton Posted May 13, 2014 Share Posted May 13, 2014 Is it a hiss, or a hum/buzz? I've got an Evo II head that has a pretty loud hum when the output volume is above 9 o clock. Disengaging the valve drive and EQ gets rid of it, engaging one or the other on it's own brings it in a bit and both switched in its very loud. Is it something that a service would fix? Quote Link to comment Share on other sites More sharing options...
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