New Luxman DA-06 doesnt sound so great. Will it get better?

I have a Luxman integrated amp.  It took a long period of use until it really sounded its best.  First couple of days, I thought I made a big mistake buying it but am very happy now.
I did some research regarding using step up transformers with directly imported Luxman products.  No one actually using them reported any ill effects and a couple people suggested they were actually beneficial, working as power conditioners.
Luxman products are subject to a substantial mark up by the US distributors.  For some, this may be in some way justified.  I didn't have a pleasant experience working with an authorized dealer here and would consider directly importing next time.

About after over a week of burn in, the DA-06 now sounds "warm, dense, and clear".  It also has some magical sounding properties as the sound is very lush and polite.  I was laying down listening to some music streaming from my pc (Foobar using Sox upsampler to 174.6khz -> Schiit Wyrd -> Audiogd DI-2014 -> coax in DA-06, balanced out -> Goldpoint level controls -> Parasound A21 x2 -> custom speakers) and I was hearing sounds come from behind me.  I thought there was something outside but realized it was actually the music!  

It is an excellent dac that has a very unique sound but requires a very long time to break in.  I feel that there is no need to upgrade the transformer or the stock power cord (which is very nice btw) in my system.  Japan has both power systems 50hz and 60hz.  Consumer electronics will work on both.    

About the relay issue: it didn't like my Kanex Pro hdmi de-embedder.  Also on the USB input, the relay will click when skipping or fast forwarding tracks.  With the coax - there are 0 clicks.  I believe on the DA-06 the coax is treated as an asynchronous signal that further reduces jitter phase noise. Similar to the USB input.
 
Thanks for all the comments - I am a proud owner of a Luxman :).  

I'm just curious how this fares, 5 years after. I see Luxman has discontinued it, and has no real successor. Would you recommend getting it used, or to go for the D-03X in the same price range? (Or just some other brand?)

Wow time goes by fast...  Ive had everything packed up for the last couple of years due to moving around.   For the last year or so Ive just been using my bluetooth headphones - Sennheiser Momentum 3.  They actually sound pretty good for being wireless and it is also a relief to have things be so simple.  

Before you decide on Luxman, I would look at dacs based on AKM dac chips.  The sound is full bodied similar to the old BurrBrown chips but is clearer since they are newer.  

I think the D-06 has withstood the passage of time very gracefully. I bought a D-03X initially, and later got a good deal on a used DA-06. After comparing them for a couple of weeks, the D-03X was returned to the dealer. After all these years, the D-06 still retains top notch quality and can compete head to head with any modern sub $3k DAC.