Luxman L590AX vs.590AXii

Found this also -

Differences Between Luxman L-590AX and L-590AXII

In order to achieve power without sonic compromise, Luxman implemented its ODNF 4.0 drive circuit utilizing a three-parallel push-pull structure with three-stage Darlington. A Luxman 'Ultimate Efficiency Power Transformer' – an EI type rated at 615VA – forms the heart of the amp's power supply, with plentiful regulation ensuring an unshakable response to any load fluctuations. A high-capacity block capacitor contributes to L-590AXII's ability to deliver lashings of power yet remain firmly in control, while the amp's low-impedance transmission design, carefully selected custom components and short, fully optimized signal paths deliver maximum sonic purity. Compared to L-590AXI, which had only four block capacitors, L-590AX MarkII has eight in total – four each for left and right, the same configuration as Luxman's M-700u. Similarly, whereas the L-590AXI had four output boards, the L-590AXII has eight output boards to drive even more difficult speaker loads with ease.

@ryder - I did read this same response from you in another thread. Thanks for also posting here

@builder3 - This is the info I was looking for. It appears the primary differences are the 8 vs 4 caps and output boards and PS. The attenuator and ODNF circuit also are upgraded. I may want to spend the extra cash for the 590XAll. - Thanks

The improvements will be speaker dependent.  Buy the old one and spend the extra cash on a pair of Fritz speakers

+1 erik.  The need for the additional power supply is dependent on power requirements of the speakers to be driven. 

@erik_squires  @mesch 

I ordered a pair of Tekton DIs to run with my FirstWatt F6. The F6 did a decent job with my Focal Kanta No.2 speakers. I am confident the 590AXll will run the Focals very well. I was concerned about the 590AX. Perhaps my concenr is warranted. My intent is to replace the amps in my primary system, which currently consists of Rogue M-180s and the Focals. The Fritz speakers look very interesting. They certainly will be on my list of speakers to buy next.