2025: Does somebody needs Hypex etc...?

[tineared]

Fair point. I have neither device so Im quoting tests and user experiences here. I am the last person here to dismiss personal experience and subjective opinions.

And yet that is precisely what you're doing.

 

[Ropeburn]

IMO it is somewhat easy nowadays to design a PFFB enhanced TI based class D amp. Up to some 200W they may be fine enough, and for a very low price.

But when sensitivities are low and the Purifi woofer extended bass requires big power, or large tower speakers in large rooms, then Hypex and Purifi still have no competition. They rule where money is not a problem or where there is a "buy once, cry once" mentality.

They also rule where money is indeed a problem - just not in the absolute lowest price range. The world class performance they offer for very reasonable prices is hard to beat. For example state of the art 2x500W poweramp for 1000-1200, where else can you get that?

 

[Matias]

Well, yes, this in class D realm. When considering AB, A and tubes their advantages are even greater.

 

[Yevhen]

IMO it is somewhat easy nowadays to design a PFFB enhanced TI based class D amp. Up to some 200W they may be fine enough, and for a very low price.

But when sensitivities are low and the Purifi woofer extended bass requires big power, or large tower speakers in large rooms, then Hypex and Purifi still have no competition. They rule where money is not a problem or where there is a "buy once, cry once" mentality.

Fully agree. Previously, I was changing the amps like every 1-2 years getting closer and closer to the ultimate sound quality: LM3886-> Class AB NAD->Cambridge Audio-> TI Class D NAD->Audiolab etc. And it was never good enough. I upgraded those amps adding more electrolytic caps, replacing error correction opamps with the top TI chips, plus making the negative feedback as deep as possible just before the whole amp started oscillating.

But since I built Purifi-based amp 4 years ago, I forgot that it even exists. It just feels like a fully transparent component, like a piece of wire between my DAC and the speakers.

 

[mocenigo]

Fully agree. Previously, I was changing the amps like every 1-2 years getting closer and closer to the ultimate sound quality: LM3886-> Class AB NAD->Cambridge Audio-> TI Class D NAD->Audiolab etc. And it was never good enough. I upgraded those amps adding more electrolytic caps, replacing error correction opamps with the top TI chips, plus making the negative feedback as deep as possible just before the whole amp start oscillating.

But since I built Purifi-based amp 4 years ago, I forgot it that it even exists. It just feels like a fully transparent component, like a piece of wire between my DAC and the speakers.

Same here. Since I built my 1ET400A amp, with some assistance from the lovely Purifi folks (Kim Madsen and Lars Risbo) regarding the power supply (Hypex PSUs were on backorder at the time, so I had to choose other stuff and adapt), and using Neurochrome's Universal Buffer, I feel I do not need to change amplifiers. It just stays out of the way, and I know it does.