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Review and Measurements of PS Audio PerfectWave DirectStream DAC

Frank Dernie said:
Ha-ha!
I like my tea strong. Very little tea tastes good to me and I had a major search for another I liked when the one I favoured stopped being blended :( now I order it in bulk from a blender in the north of England :) as loose leaves and have teapots with built in strainer so I can remove the leaves when properly brewed. Yum, drinking some as I surf!
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Built-in strainer? I'd like one of those so tell me what it is please.
 
scott wurcer said:
Digital processing with insufficient length of coefficients or intermediate results properly covered up by dither might result in an analog noise floor when converted back to analog by a DAC.
Click to expand...

.. which is nicely explained in this ESS document on the example of digital volume control processing, but the same principle applies on any other kind of digital processing.
 
I really, really don't like the idea of audio hardware dependent on software updates. A dac has a very simple job to do. Having software updates in a DAC is like having software updates in a shovel.
 
AudioSceptic said:
Built-in strainer? I'd like one of those so tell me what it is please.
Click to expand...
Possibly like this from Bodum.
81-ODo8NDmL._SX466_.jpg
 
617 said:
I really, really don't like the idea of audio hardware dependent on software updates. A dac has a very simple job to do. Having software updates in a DAC is like having software updates in a shovel.
Click to expand...

Every DAC is dependent on software. You can either have updates on the same hardware or you are forced to buy next generation of DAC chip which contains new software (and sometimes better hardware). In that context the idea of software (firmware) updates is actually good. What is bad with this DAC is that crappy transformer in the output stage. And that ridiculous price, of course.
 
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g29 said:
You need the ratchet straps to tension the package.
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I've been experimenting with bungee cords actually. Seems as if the absorption coefficient of the variable tension really helps to dial in my bass. :)
 
PSAJH said:
I've been experimenting with bungee cords actually. Seems as if the absorption coefficient of the variable stretch lengths really helps to dial in my bass. :)
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I am sure you heard of the old "Amp Clamp" product that would essentially put your audio products into a vice for better sound ?

I actually found a need for a DIY version once. I ran a frequency sweep on my newly remodeled Home Theater/Great room to identify and dampen what ever was resonating at their natural frequencies. Found about 5 things what would sing loudly when the right frequency was hit. One loud noise was coming from the stereo rack. It was the VCR's (before DVD's and BluRays) top plate. I wedged a rubber hockey puck between the top of the VCR and the bottom of the shelf above and resonance was eliminated. Tensioning works I tell you !!!
 
g29 said:
I am sure you heard of the old "Amp Clamp" product that would essentially put your audio products into a vice for better sound ?

I actually found a need for a DIY version once. I ran a frequency sweep on my newly remodeled Home Theater/Great room to identify and dampen what ever was resonating at their natural frequencies. Found about 5 things what would sing loudly when the right frequency was hit. One loud noise was coming from the stereo rack. It was the VCR's top plate. I wedged a rubber hockey puck between the top of the VCR and the bottom of the shelf above and resonance was eliminated. Tensioning works I tell you !!!
Click to expand...

No kidding, what a solid find!
I'm in a 100+ year old house, and it took me replacing all of the windows in the room to get rid of the rattling.
snatched a rather large chunk out of my hifi budget, but well worth it!
 
PSAJH said:
No kidding, what a solid find!
I'm in a 100+ year old house, and it took me replacing all of the windows in the room to get rid of the rattling.
snatched a rather large chunk out of my hifi budget, but well worth it!
Click to expand...

I had just gutted and remodeled a house built in the 1920's. Not quite 100 years, but it still had plenty of issues to correct. If memory serves, the window treatments were also an issue and surprisingly the plastic shroud covering the back of a Mitsubishi 35" picture tube television got really loud at it's resonant frequency. Some Dynamat Extreme would have helped the TV shroud, but those dampening products weren't around then.
 
AudioSceptic said:
You'll need to prove it with a double-blind ABX.
Click to expand...

Or tell us that it has a firmware update...

Yeah. Software. That'll fix all life's problems.
 
 
GrimSurfer said:
What's the next one going to be called? Mount Difficulty?

(Kiwis will love that name, which is the same as a particularly good vineyard on the South Island. Great pinots!)
Click to expand...
After Mount St. Helens, an update a few years ago, it was completely transformed, nothing like it was before.
 
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