You're obviously a fan.
Obviously. And as I said ,obviously you have no idea what a modern day valve amp sounds like.
Stick to what you know ,not what you have read.
I'll stick to believing measurements thanks.
On the road: HP Elitebook 8540w, Sennheiser HD650, Bose Computer Mini Monitors.
Home: Denon DBP-2010, Humax, Panasonic Plasma, Monitor Audio ASB-2, AKG K240 Studio, Audio-GD NFB 12, Audio Pro Addon T8 active monitors, definitely no fancy cables.
I'm interested to hear from anyone who has owned both high quality / expensive amps and cheaper amps with easy to drive speakers and not detected any difference.
Did you happily downgrade?
Or upgrade, and later realise no improvement after the initial excitement?
I know little about electronics, however I do know (or have learnt) that diving impedance/high phase angle are characteristics of difficult to drive speakers and these speakers will require even more Watts to drive them without clipping. More Watts, higher current. More power.
So you accept that wattage isn't all that matters; current matters too. This is why a low-wattage, high-current design, such as a 30W Class A amp, is better at driving difficult speakers than a low-wattage, low-current design, e.g. a low-spec Class A/B amp. Class A amps for the most part also sound different from Class A/B amps, because unlike Class A/B amps they don't suffer from crossover distortion. Different designs can sound different. It's not simply a matter of wattage.
So why can't people tell them apart in blind testing?
How does voltage affect things, since Watts = volts x amps?
Given that tone controls alter how an amplifier sounds, then it is not inconcievable to imagine that some sort of filtering be inbuilt in an amplifier to provide a house sound, not particularly hi-fi, but there you are.
So we can say that some amplifiers sound different maybe, but should they if they are simply amplifying a signal? To my mind, any decent amp should be as transparent as the design allows and almost all evidence seems to point to the fact that most amps sound the same, or as close to being the same to be considered so.
The value in more expensive amplifiers aside from non audio properties is in the ability to better control difficult to drive speakers and to allow for greater volume without distortion. Sound quality per se should not really be an issue.
Mac mini > AVI ADM9Ts
i'd say alot of modern midrange amps, say 1 - 2k arent worth the money. I'd prefer a 10 - 20 year old Solid state powerhouse. My Arcam was ok but so cheaply built compared to some of the older Japanese stuff availible used. Thats where I'd spend my £'s. My only regret is not knowing sooner!
Mac Mini > Chordette Peach + Sony CDP707ES + Arcam CD 73 + Quad FM4
Arcam A28 + Sony TA-FA 777ES
Naim Naca 5
I'd prefer a 10 - 20 year old Solid state powerhouse.
Bloody Sony lovers!
Sonos Connect - Rotel RCD-965BX
Naim NAC A5 - Spendor SA-1
AKG K450 - AKG K551
The Elicit R is £1100 more expensive than the Brio R IMHO this amp seriously blows the Brio R out of the water!
Icon Audio ST40 III / KT88, Rega Apollo R, DAC, RS3
Rega RP6, Nagaoka MP-200, White Belt, Michell Tecnoweight, Rega Fono MM
Rega Quattro, Couple 1 & 2
For a certain power, when the speakers need lots of current (low impedance, high phase angle), voltage may drop = bad. No?
And is this in a test where both amps are playing the at exactly the same moderate volume with the same, east to drive speakers?
We are talking about easy to drive speakers only, like Harbeths.
Rega Brio vs Elite R
Meant Brio R vs Elicit R.
"Everything has been said before, but since nobody listens we have to keep going back and beginning all over again." André Gide
I'm not aware of any blind tests comparing Class A against Class A/B amps. But then having read through the blind tests given in MakkaPakka's e-mail, I wouldn't give any creedence to that kind of blind testing. They all seem to have been done by enthusiasts or engineers. It's a bit like asking a psychologist to measure the performance of an amp.
You tell me, since you know all about engineering measurements.
What classical music are you listening to?
So why did you never take up the Harbeth Challenge and win yourself 5 grands worth of speaker if it's so easy?
Oh, hang on, not one person took up the challenge. That speaks volumes to me.
I would have taken the Harbeth challenge in a heartbeat if it hadn't been for the get out clause that the amps must have the same frequency response. I own 2 amps that I am confident I can tell apart in a blind test. However they will have frequency responses that vary by 0.5 to 1 dbs at the frequency extremes. These frequency response differences are not the biggest sonic difference between them, but they are there nevertheless. The biggest sonic differences between these 2 amps comes from bass grip and midrange naturalness and detail.
You cannot hear measurements.
Origin Live Aurora Gold+Illustrious Mk2 arm+Zyx R100-02/Stello CDT200+Stello DA220 dac/Tom Evans Groove Anniversary phono amp/Tom Evans Vibe preamp/Linear A power amp/Acoustic Zen Adagios/Chord cables/Oppo 105EU.
What can you hear that can't be measured?
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