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Gryphon vs Luxman vs Accuphase

Thinking that I may bite the bullet this year and get into a Gryphon Diablo 300 but before I consider shelling out that much, wanted to get some input from any of you that have heard this amp in comparison to Luxman or Accuphase. The 509X from Luxman costs half that of the Gryphon and is more within reach. The Accuphase E650 is not that far off the Diablo 300 pricing. IF the Gryphon is better in your mind, curious to hear whether you think the Luxman or Accuphase come close?

It sounds like all 3 have rave reviews. One is a class A while the other two are Class A/B. 
freesole
freesole OP
159 posts
 
@denon1 

Speaker - Spendor D9 - I find them to be very well balanced and neutral. Nice extension both at the top and at the low end. I have only tried them with my Line Magnetic so far which is not an overly warm amp so I don't think it needs an amp with a warm quality to sound good. The LM is a Class A SET amp. 

Cables - Interconnects are Wireworld Silver Eclipse 8 and Acoustic Zen Matrix Ref II RCA's

Power Cables - Mix between Acoustic Zen Gargantua II and Audioquest Thunder 
builder3
758 posts
 
freesole, I own the L-590AX, which is the previous version of the newer L-590AXII. It’s actually greginnh’s old amp, which I essentially lucked into. I absolutely love it, but haven’t heard either the MarkII, or the new 509. The newer MarkII series had the output stage beefed up, I believe.
greg has owned two of those, and heard all three, if I'm not mistaken.
respected_ent
189 posts
 
I have not heard the 509.  I believe @greginnh has heard both the 509 and the 590, so he would know.  Since 509 is newer, it should theoretically be better than the 590, but again, 590 has the class A magic.  
denon1
345 posts
 

Freesole, I had luxman 509x that drove the canton 3x reference speakers. I did not like the sound at all. No decay, analytical, flat. Guess what speakers cables I had with it - wireworld silver 8 eclipse.

Once I changed the speaker cables to triode wire labs this integrated became a different animal - dynamic, focused with good 3d image. I still had to sell it because on a higher than medium sound levels it sounded restrained and less musical.

atownkeep
19 posts
 
I will agree with Denon. I felt at moderate listening levels that the 509x was top of the line. However when you want to crank it up it just didn't dig and put ooomph behind the music. JMOT
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