Luxman 590AX II Break-In

@erik_squires 

Thanks, great advice. I am currently 1ft. from the rear walls with a slight toe-in. I am still questioning the break-in time. Many have stated at least 300 hrs. Also, the KEFs are brand new and need some time. Right now, this is not an involving system by any means. I question whether a 509X would have been a better match.

@swede58 

This is a brand-new system, so I do not have a reference.

Make sure you have plenty of space to the side walls. I should have stated, I have the 507ux which is not class A, but it was always a stellar performer from end to end.

I am really concerned you have too much treble in your mix.  The tone controls on the Luxman pre-amp section really are superb, don't miss out.  Try them!

It is not unusual for a couple hundred hours to be required to get in the ball park of what you will hear in the future. But, to be honest, your speakers require a lot of power, 85db efficiency, and the Luxman you have chosen is outstanding, but of very low power. Not a match made in Heaven. 

The 590 isn't low power. It will put out 90w/channel into 8 ohms, and 160w into 4 ohms. It's not a monster amp, but it's more powerful than Luxman's specs would suggest. Wish I had anything else to offer.

Wow!  A 40 kilo DAC.  Cool.  I run the Luxman 509X on some demanding ATC 20s and it is still breaking in after 100 hours.  I can read, you are beyond that.  

Your pieces are in order.  Cabling and power conditioning not mentioned.  One can only assume all of that is commensurate quality.  That leaves more break in and room treatment.

Hope you successfully resolve all issues.