Technics SU-R1000 - Good but not the king of switching amps


Was looking at the measurements for the Technics SU-R1000 Integrated published by Stereophile. I never bother with the reviews of the sound quality as there’s 1 reviewer there whose ears I trust and it’s not this reviewer.

To be clear, this IS a digital amplifier, and is not a Class D amplifier. Atmasphere will always disagree with me, but given Technics nomenclature and the use of an A/D converter, and PWM output I think if any amplifier qualifies as digital this one does.

What I find kind of interesting here is that the measurements are OK but not absolute Class D killing results. I am particularly unimpressed by the performance of the impedance compensation circuit, LAPC, which at the end of the day does not seem to have performed significantly better than actual, non GaNFET amplifiers, particularly in removing the effects of the output filters Class D amps require. I really hoped to see a huge win here... but it’s not. It’s just making the PWM perform almost as good as a true Class D amplifier.

I have not heard this integrated, but the claims and expectations laid out for the technology seem to not be proven in the measurements. This is a very expensive integrated that does everything differently, and measures about the same as previous generation, also excellent sounding, Class D engines I’ve seen measured.

My stance that Class D was already very good and that new, faster switching amps would have to be truly spectacularly better to unseat them remains, in my mind, uncontested.

Can’t wait to see everyone trashing Class D on the measurements suddenly decide that this amp should be heard and not measured.

erik_squires

Maybe there is a limit to what practically constitutes good sound.

 

At least with switching amps, I have to agree with you, @Mapman

This amp brought with it a kitchen sink worth of new stuff.

It also has meters, as god intended, but the very technical expectations I had for it's performance have been dashed.  I never expected it to sound much better, but I did expect it would measure better.

If wee went by measurements for everything then neither Messi or Maradona should be able to play football.

Personally I am a vinyl freak but am itching to hear this amp - it does things i nthee analogue domain that I believe is only done by 50K north FM Acoustics equipment (I didn't really look at those specs at any length as I will never have them)

I am interested in what the digital resolution is on vinyl.

@ben_campbell 

I understand you have one of these amps and use it with vinyl. What did you move from?

I demoed this amp against a Luxman and Chose the Technics. I love the sound and have owned this unit for almost 1 year.