Who knows more about this power amp from Pure Audio (sound quality, circuit topology) ?
go to
Pure Reference Class A Monoblock pureaudio
for looking the short form datas.
Power Consumption = 150 Watts and 2x 65 Watts continuous output power into 8 Ohms is definitely pure Class A. Perhaps even a single ended topology.
go to
Pure Reference Class A Monoblock pureaudio
for looking the short form datas.
Power Consumption = 150 Watts and 2x 65 Watts continuous output power into 8 Ohms is definitely pure Class A. Perhaps even a single ended topology.
1. 2 x 65W = 130 W
2. Maximal (theoretical) efficiency for class A amplifier (Push Pull) is 50 % and 25% for SE.
3. To make that claim (pure class A) believable, the power consumption would have to be at least twice as large...
Sound too good to be an 16kg amp, I don't quite see the huge heat sinks that A-class needs. I would think that 2x65W in pure A-class would consume minimum of 300 watts at idle. 130w of max power with 150w consumption is nowhere near possible with pure A-class (consumption under max load should not rise from the idle consumption) so maybe it's some sort of "dynamic A-class" with sliding bias...?
It is also advertised to have fully regulated PSU, which basically means that there is another amp inside the amp (= more losses/inefficiency = more power to dissipate). Maybe the PSU is regulated SMPS, that would explain.
It is also advertised to have fully regulated PSU, which basically means that there is another amp inside the amp (= more losses/inefficiency = more power to dissipate). Maybe the PSU is regulated SMPS, that would explain.
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Fairly right , but the class A threshold can be increased using
relevant devices , namely , lateral fets.
The power at wich the amp quit class A mode and work in class B,
that is , with only one device conducting , the other one being
switched off completely.
Juma s estimation is correct , and even optimistic in many cases
since a 50% maximal efficency is not achieved by many designs.
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OK, but it still won't be better then just under 50%, and I suspect bipolars in CFP will better even lateral Fets.
Of course the more relevant fact is that very few speakers rated at 8R will stay there.
Most will have impedance minima approaching 4R, so this amp will still dip into class B occasionally.
Of course the more relevant fact is that very few speakers rated at 8R will stay there.
Most will have impedance minima approaching 4R, so this amp will still dip into class B occasionally.
Who have heard this power amplifier in the meantime?
BTW - Mr. Gary Morrison, the founder of this company, was no stranger.
http://www.monoandstereo.com/2011/10/pure-audio-pure-series.html
Who We Are pureaudio
BTW - Mr. Gary Morrison, the founder of this company, was no stranger.
http://www.monoandstereo.com/2011/10/pure-audio-pure-series.html
Who We Are pureaudio
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*chuckles* I suppose one can say it will 100% sound better than it looks, regarless of your sound preferences.
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