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Luxman 507/509

I wonder if anyone out there can answer a question I cant find an answer to anywhere on the internet please? I have the option of a good deal on a Luxman 509x but clearly still a fair bit more than a new 507uxII. I honestly cant convince myself of a difference in sound driving dynaudio heritage specials but I wondered what technical differences actually exist between the two - aside from a modest difference in rated power output. Any thoughts? Many thanks
martinol
rockrider
181 posts
 
@erikt 
Very interesting lower than expected class A bias. Thanks for sharing!  I wonder what all that idle power is doing if not class A bias....

@martinol 
Looking at the pics with lids off, the L-509X has twice as many power supply caps as the 507. This might enhance bass slam, and the 509 is not lacking bass slam in my experience!
erik_squires
16,056 posts
 
The two areas where Luxman steps up/down seem to be power supplies as well as output transistor pairs. The 509 with 4, 507 with 3, and 505 with 2 pairs per channel.

I find the 507 to be quite splendid with my current setup. :)
martinol OP
4 posts
 
Just to say thank you very much for your answers, very helpful!
arafiq's avatar
arafiq
1,665 posts
 
OP -- you should consider the 550 and 590 models as well. They are quite similar to 507/509, but IMO add a bit more warmth and texture to the sound owing to their ability to operate in pure class A further than the other models.
ryder
1,689 posts
 
Martinol, if possible please audition the 509X and 590AXII (or 507) with your Dynaudio Heritage. I find the L-590AXII to sound splendid in my system with Marten Duke 2. The Class A of the 590AXII imparts a slight warmth to the sound which gives an organic and real feel to instruments and human voice without sacrificing too much slam and dynamics. It's a rather neutral sounding amp.
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