Quote Originally Posted by Barry View Post
If Quad use the above arrangement as shown in their 34 preamp, then it ought to work for the 405. What speakers are you using? I have used a Quad 405 into Quad 57 ESLs and only experienced a dull thump on switch on, nothing more and certainly not a 'bang'.
And indeed it worked fine

A slight murmur on start up and complete silence on shut down ... so that's all good then.

Thank you for your support with this Barry