I always thought an amp needs to weigh 70 pounds with massive heat sinks and class D was sterile even though I never heard one.. I bought a used 2006 PS Audio HCA-2 with every mod Audio Reference Mods offered. It was cheap and was going in second system. I could not believe how fast and musical it is. It sounds like tubes in my system almost like a el84 amp but 150 watts, I am using a tube Preamp. The detail this amp pull out still amazes me eveytime I listen to it. It took 5 days for it to fill out but when it did it became big, tight and very fast with loads of information, I leave it on 24/7. This amp opened my eyes what digital can do, I'm not a digital snob anymore. I'm now wanting to look at more current digital amps to see what there all about, mine is quiet but you do hear a little noise if you put your ear close to speaker.
I went from Class D to Luxman A/AB - And most of what you think is wrong
Hi everyone,
As most of you know, I’m a fan of Class D. I have lived with ICEPower 250AS based amps for a couple of years. Before that I lived with a pair of Parasound A21s (for HT) and now I’m listening to a Luxman 507ux.
I have some thoughts after long term listening:
I found the Class D a touch warm, powerful, noise free. Blindfolded I cannot tell them apart from the Parasound A21s which are completely linear, and run a touch warm due to high Class A operation, and VERY similar in power output.
The Luxman 507 beats them both, but no amp stands out as nasty sounding or lacking in the ability to be musical and involving.
What the Luxman 507 does better is in the midrange and ends of the spectrum. It is less dark, sweeter in the midrange, and sounds more powerful, almost "louder" in the sense of having more treble and bass. It IS a better amplifier than I had before. Imaging is about the same.
There was one significant operational difference, which others have confirmed. I don't know why this is true, but the Class D amps needed 2-4 days to warm up. The Luxman needs no time at all. I have no rational, engineering explanation for this. After leaving the ICEPower amps off for a weekend, they sounded pretty low fi. Took 2 days to come back. I can come home after work and turn the Luxman on and it sounds great from the first moment.
Please keep this in mind when evaluating.
Best,
E
As most of you know, I’m a fan of Class D. I have lived with ICEPower 250AS based amps for a couple of years. Before that I lived with a pair of Parasound A21s (for HT) and now I’m listening to a Luxman 507ux.
I have some thoughts after long term listening:
- The tropes of Class D having particularly bad, noticeable Class D qualities are all wrong and have been for years.
- No one has ever heard my Class D amps and gone: "Oh, wow, Class D, that’s why I hate it."
- The Luxman is a better amp than my ICEPower modules, which are already pretty old.
I found the Class D a touch warm, powerful, noise free. Blindfolded I cannot tell them apart from the Parasound A21s which are completely linear, and run a touch warm due to high Class A operation, and VERY similar in power output.
The Luxman 507 beats them both, but no amp stands out as nasty sounding or lacking in the ability to be musical and involving.
What the Luxman 507 does better is in the midrange and ends of the spectrum. It is less dark, sweeter in the midrange, and sounds more powerful, almost "louder" in the sense of having more treble and bass. It IS a better amplifier than I had before. Imaging is about the same.
There was one significant operational difference, which others have confirmed. I don't know why this is true, but the Class D amps needed 2-4 days to warm up. The Luxman needs no time at all. I have no rational, engineering explanation for this. After leaving the ICEPower amps off for a weekend, they sounded pretty low fi. Took 2 days to come back. I can come home after work and turn the Luxman on and it sounds great from the first moment.
Please keep this in mind when evaluating.
Best,
E
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- 297 posts total
- 297 posts total