Going linear - The Luxman 507ux

I am going to cross post this.

Turns out the 507ux is the first amp I have owned in a long time which is NOT AC grounded. The socket in the rear is a 2 pin, and the cable that comes with it is as well.

AFAIK, in order to do this legally manufacturers have to take extra care and double insulate the gear.


This could very well be a contributing factor in the sound quality. No ground pin = no ground loop through the AC line. Pretty awesome. :)


Best,
E

Erik, my 590 is the same, no ground. Zero issues, someone a while back asked me about "hum", so I powered the amp up with no source running and started turning the volume up. Dead quiet.
On the power cord post, you don't owe me any apologies. Sometimes I'm in a hurry and make a pretty short post, comes off a little terse, sorry. Just the fact that you were buying from DH Labs caught my eye, they deserve more respect, both for their products, and their service. I was really second guessing my power cord purchase, it's not something I have much experience with, and the price was a bit out of my comfort range. And yes, I realize a lot of folks here would laugh at that. In the end, it was the most bang for the buck I've ever had in the hobby, and just wanted to pass it along.

I would like to seek advices on the Luxman amp. I am interested with the 507xuIi and the 509x. I would not be able to audition them as there is no luxman distributor in my country. I would be ordering and shipping them from oversea. With a price premium of about 40% over 507xuIi.  Sonically what are the edge that 509x has over 507xuII? Is there a huge jump in terms of sound quality?

thank you

Hey @brostymie
Not a jump, but if you have speakers that are difficult to drive with low impedance areas the 509 has extra output transistors and more power supply to make it perform better.




Best,
E

brostymie, will you be needing a step up or step down transformer in your country?  A good one costs a few but not excessive $ bucks.