2. amps-preamps
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Marantz Ruby PM KI amp vs Accuphase e-480 or e-380

So... does the Marantz "economies of scale" trump here? Can they make just as good of luxury product for cheaper than the more "boutique" brand? Sound quality -wise, is the Ruby PM KI amp just as good or better (though without the features) as the Accuphase e380 or e480...?

My preference is detailed but perhaps on the warm side of neutral...

Could run either of ’em w a bluesound node going through the Ruby SACD player dac, so consider that the source(s).  Just consider that to be my inputs, into the Ruby and/or Accuphase amps, to control that point.  So the question is about the amps. 

And btw... I know there are plenty of other choices... but let's keep this discussion focused to my question at hand; I've heard all the arguments for all the other possible amps in this world, and I'm down to these two for the purposes of my question; I'm not interested in hearing about a bunch of other brands.

Another related thought, although it would likely void the warranty, if I bought an Accuphase, say the 480, in Japan ... could it be easily "rewired" to be American power (110/120) ? A high end repair shop ought be able to do that for a couple hundred bucks I’d think, or am I mistaken.

curtdr

Showing 4 responses by hgeifman

hgeifman
2,310 posts
 

I agree the Marantz PM-KI Ruby SIGNATURE REFERENCE Integrated amplifier looks very interesting especially at its price but my sense is the Accuphase e-480 or e-380 amps will sound much better. You need to audition these amps and make your own decision. I briefly looked at the Marantz PM-KI Ruby amp but passed since it does not have balanced inputs. I do not understand why this amp does not have balanced inputs.

I recommend you not purchase the Accuphase amp in Japan and convert it. This would void the warranty and is not recommended.

hgeifman
2,310 posts
 

The Marantz Ruby amp might be worth a listen. Please see:

”PM-KI Ruby exclusively focuses on transfixing audio performance. A fully discrete, two-stage, current-feedback design with separate power supplies for the preamplifier and power amplifier section, it outputs a robust 200Wpc into four ohms and 100Wpc into eight ohms. This rare gem also arrives with a MM/MC phono preamplifier with a Marantz Musical Premium Phono EQ circuit as well as Marantz HDAM technology throughout for exceptional high-resolution signal purity and the cleanest pathway through the amplifier. A toroidal transformer strictly dedicated the preamplifier for added precision, proprietary HDAM SA3 modules for optimal dynamics, and a linear volume control with all-new components further ensure what you hear goes beyond the believable”.

hgeifman
2,310 posts
 

+1, Agreed. Get the Accuphase E-480 amp.  

hgeifman
2,310 posts
 

@corelli,  Based on my past experience, I am not a fan of Class D amps.  How does the Marantz Ruby PM KI amp class D design differ from their previous class D designs?   In other words, how is it superior than their previous class AB Designs?  Do you have any more comments on its sound quality?   Thanks.....  

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