[quote name='dave_bass5' post='393973' date='Jan 28 2009, 07:31 PM']Yeah, bloody stupid.
As i said, i asked Ashdown about this, tested 3 other ABM heads in the Bass centre and posted this question on TB (this was about 2 years ago, might even have been three) and got the same answer/result. But ive not really heard of anyone else posting about this so maybe i was just unlucky.
It does attenuate quite a bit and until i pointed it out on TB no on had really heard this happening and im sure at a gig it wouldn't be a big problem but i did hear a thump when i plugged my bass in, with the mute button on.[/quote]
The mute buttons cuts the power section only not the preamp so you can still use the tuner out.
Mute on or not you'll still get a thump from the preamp. Plugging in when the amp is already on = bloody stupid