Interesting and at the same time perplexing as to Luxman's design decisions around their new set of integrated amps.
The "Class A" line up of 550AXii and 590AXii and the "Class A/B" line up of the 505uXii, 507uXii, and 509X.
The form factors are the same as far as I can tell from their on-line specs.
The 550 and 590 are touted as pure Class A, up to a certain output, yet their website doesn't make any mention that they can actually output quite a bit more in Class A/B.
And at the same time, the 505, 507 and 509 have specified outputs much higher than the 550 and 590, yet the website doesn't mention that at least the 509 actually is biased to operate in pure Class A for the first 6 watts before transitioning to A/B for the rest of its specified output.
The 509 and the 590 have the same form factors with the 509 weighing in at 29.3kg while the 590 is lighter at 28.4kg.
The "Class A" line up of 550AXii and 590AXii and the "Class A/B" line up of the 505uXii, 507uXii, and 509X.
The form factors are the same as far as I can tell from their on-line specs.
The 550 and 590 are touted as pure Class A, up to a certain output, yet their website doesn't make any mention that they can actually output quite a bit more in Class A/B.
And at the same time, the 505, 507 and 509 have specified outputs much higher than the 550 and 590, yet the website doesn't mention that at least the 509 actually is biased to operate in pure Class A for the first 6 watts before transitioning to A/B for the rest of its specified output.
The 509 and the 590 have the same form factors with the 509 weighing in at 29.3kg while the 590 is lighter at 28.4kg.