Showing posts with label Pono. Show all posts
Showing posts with label Pono. Show all posts

Wednesday, 23 September 2015

MEASUREMENTS: PonoPlayer and DSD Playback

Hey guys, just a quickie posting here for mid-week...

I was looking over the measurements over the last few months and realized I neglected to post results of the PonoPlayer doing DSD64 and DSD128 playback! So, instead of the data just sitting on my hard drive, I thought I might as well throw it out here for reference.

I don't believe I have seen anyone measure results of DSD playback with the PonoPlayer. I suspect a reason for this is that DSD was an "add-on" firmware upgrade released after the major magazines got a hold of these units for review. But then again, how often do you see measurements of DSD output quality?! I'm guessing that DSD playback was a "checklist" feature that some people wanted or it looked good for the company to support. Of course DSD is an acceptable input data format for the ESS SABRE9018K2M DAC chip (as it is with essentially all high quality DACs these days). DSD has been enabled as of firmware 1.0.5 back in February. For my tests, I'm using 1.0.6 from the May 2015 update.

Friday, 28 August 2015

MEASUREMENTS: It's Balanced PonoPlayer Time...


As promised in my previous post on the PonoPlayer, I was going to be getting some 1/8" TRS-to-XLR balanced cables to try out with the PonoPlayer. Mainly I just wanted to see for myself the optimal level of functioning for this device... Already the unbalanced output is capable of respectably low noise and very reasonable distortion numbers especially with high samplerate material for a portable device. I therefore expect the balanced output to be better. As you see in the image above, those cables arrived; inexpensive ones off eBay at about $12USD for the two from China.

Friday, 7 August 2015

MEASUREMENTS: PonoPlayer - observations & opinions...


A couple months back, I mentioned that I got myself one of these PonoPlayers. I got it lightly used locally and saved myself quite a few dollars (remember, I'm in Canada so would not be able to buy it directly unless specially shipped across the border). As you can see, I got one of the standard black models. Although the yellow one looks iconic and was what Neil Young went on Letterman with way back in 2012, black is more my style... And it looks pretty cool.

Since its availability back in January 2015, I believe most have no doubt already read a number of reviews on this device... I don't think it's so much the device itself, but the promotion of the whole Pono ecosystem by Neil Young that has ruffled so many feathers in the world of consumer electronics based on his bold claims about the audibility and necessity of "High-Resolution Audio"; claims of an audio "revolution". On one side are the technology sites who view the claims as nothing more than "snake oil", while on the other side - among the "audiophile press" - we see repeated praises of Pono "raising the bar" in its promotion of better sound quality.

Thursday, 25 June 2015

Digital Filters Test CLOSED & What Do We Have Here? [Updated]

June 25th has arrived!

As planned, this is the close-off date of the Linear vs. Minimum Phase Digital Filters Test. I hope everyone who wanted to participate got a change to have a good listen and submit their results! Thank you to everyone who did this. As usual, I'm very appreciative of the time and effort to download, load up the files, and of course the careful listening!

So, I will take the next little while to process the numbers and see what I come up with. I can share with you though that in total, I received 45 responses. This is actually close to what I imagined (about 50) based on past experience. The procedure isn't as simple as something like the 24-bit or MP3 tests done in previous years so I certainly did not expect the same kind of response.


Looks like North Americans "win" in terms of number of entries by geography :-). 62% (28) of the respondents were from North America, followed by 29% Europeans, then Asians and Australians the same (4.4% each).

Okay... I will post up the data / analysis / and conclusions when I get the information processed!

Now, on a side note... What do we have here?

Sunday, 1 March 2015

MUSINGS: Audio Quality, The Various Formats, and Diminishing Returns - In Pictures!

Let me be the first to say that graphs and charts where audio formats are plotted out in terms of unidimensional sound quality ratings are ridiculously oversimplified and can be very misleading! However, they can be fun to look at and could be used as bite-sized "memes" for discussion when meeting up with audio friends or for illustration when people ask about audio quality.

Since they're out there already, let us spend some time this week to look at these visual analogies as a way to "think" about what the authors of these works want us to consider/believe. I'm going to screen capture without permission a couple of these images to explore. As usual, I do this out of a desire to discuss, critique, and hopefully educate which I consider "fair use" of copyrighted material; as a reminder to readers, other than a tiny bit of ad revenue on this blog (hey, why not?), I do not expect any other gain from writing a post like this.

First, here's PONO's "Underwater Listening" diagram released around the time of the 2014 SXSW (March 2014):
PONO: Underwater Listening

Others have already commented on this of course (here also). I don't know what ad "genius" came out with this diagram, but it is cute, I suppose. I remember being taken aback by this picture initially as it's so far out of "left field" (creative?) that I felt disoriented when I first saw this thing...

How audio formats would evoke a desire to compare underwater depths remains a mystery to me. Obviously, there's a desire to impress upon the recipient two main messages - a direct correlation between sampling rate (from CD up) with quality, and to make sure the MP3 format gets deprecated as much as possible (1000 ft?!). On both those counts, this image gets it so wrong, it's almost comedic. Clearly, one cannot directly correlate samplerate and bitrate with audio quality because the relationship isn't some kind of linear correlation. Why would CD quality be "200 ft", and 96kHz "20 ft"? Surely nobody in their right mind would say that 96kHz is 10 times perceptually "better". Sure, there is a correlation such that a low bitrate file like 64kbps MP3 will sound quite compromised with poor resolution, but without any qualification around this important bitrate parameter, how can anyone honestly say that all MP3s sound bad? I might as well say that Neil Young's a poor-sounding recording artist because the Le Noise (2010) and A Letter Home (2014) albums are low fidelity.

Thursday, 22 January 2015

'Last' Words on PONO - Mastering Analysis & General Comments

(A friend thought the new Broadway musical hilarious.)
At some point in a relationship, we reach the end of the honeymoon...

That's of course not describing my personal relationship with the Pono idea since I've been critical of the hype put forth by Neil Young and others (like John Hamm) since the start. I'm suggesting rather that the honeymoon between anticipation for Pono with 'the world' is about to end as the Kickstarter pledges have shipped and the public can start to purchase these PonoPlayers and browse the PonoMusic Store. What will they find? Would the public expectation for music that "sounds like God" be satisfied, or would there be many who at the end of the honeymoon recognize faults which up to now were perhaps graciously overlooked.

Thursday, 15 May 2014

MUSINGS: A few words about Pono... And what is "the finest digital copy"?

Remember everyone, we're not done with the 24-bit vs. 16-bit blind test yet! We're about 1/2 way through before I close off submissions to the survey site. Again, I thank everyone who has tried it thus far and all the awesome responses with detailed descriptions of the gear used and demographic information... Many audiophiles from around the globe have already voiced their "vote" and it's getting close to 100 submissions. I'm somewhat surprised that so far there hasn't been a submission from India, Russia or S. America!

In any case, one more month to go everyone!

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Up to this point, much has already been written about Pono from both supporters and detractors. As you know, the media show around Pono started anew at SXSW with the announcement in mid-March and concomitant Kickstarter project. They did quite well financially with the Kickstarter campaign so it's an encouraging start for opportunities ahead. A few details were clarified such as the designer of the PonoPlayer being done by Ayre (rather than Meridian as previously thought). But at the end of the day, it's really hard to pin down just what is going to be all that different in the Pono "ecosystem" or why a music lover would choose this over others (eg. HDtracks, Qobuz). Maybe it is as Neil Young said here; "There's nothing, there's nothing new. There is no new thing. It's just available. It's available to everybody". So high-resolution, lossless audio will be available to everybody - at a price... Indeed, that's not new.

So, after all the star-powered hoopla and idealistic catch phrases like "rescuing an art form" (seriously, what's that supposed to mean?), what we know is that Pono is primarily a music service that sells "high-resolution" audio tracks in FLAC much like HDTracks has been doing for years. They are selling the PonoPlayer designed by Ayre to get the ball rolling as a physical device to brand the service with the 'iconic Toblerone' form factor but there's no clear commitment to ongoing hardware development. There will be no DRM which is of course good for compatibility. Since many DACs and devices these days can already do high-resolution decoding and playback, the flexibility is very much appreciated. It's amazing that even the recent May 7 Pono-listening-gathering did not use a prototype Ayre player for demonstration; again, stressing the music software as the prime objective rather than the player hardware. As you know, a number of folks have signed up for the limited-edition Kickstarter autographed PonoPlayers which are nice for collectors and as novelty items.

In the last month, I see that the Pono CEO John Hamm has taken the lead on presentations at shows like AXPONA and demonstrations like the May 7th one above. This seems like a good move since he's clearer and obviously more in tune with the technology (see the AXPONA video) than NY. There's of course still a major sales pitch going on in the video which is understandable if not annoying at this point. For example, those video clips of musicians/producers with testimonies of being "blown away" by Neil's car stereo!? You have to wonder just what kind of music these millionaires have been listening to in the last few years. Their own CDs remastered loud and volume compressed down to DR5 is my guess; using MP3 as the scapegoat of course. Furthermore, the discussion still gets stuck around the technical "container" (24-bit, high sample rate, MP3 as "5% of the data",  etc...) rather than the elephant in the room; the actual quality of the source recording, mixing and mastering process. If you're using a massive shipping container, you better have lots of good stuff in there worth taking up space for!

Encouragingly, it's great to see questions being raised at the end of the presentation about dynamic range compression and some answers being provided; John Hamm addresses this around 25:30 in the video above. He states that there will be no special remastering or remixing although it sounds like they could exert some influence in selection of which mastering is sold... But he does say something intriguing: "The promise of Pono is that we will sell you and play on our PonoPlayers the finest digital copy of that song or album available in the world" (38:35). Elsewhere, we are told that if you buy a copy of an album and a "better" remastering comes up, you get an automatic upgrade... (Right... I'll believe it when I see it.)

Interesting... Consider the question then: How does one know which is the "finest digital copy"? First, it almost goes without saying that to answer that question for any album with remasters over the years requires subjective evaluation; much more complex than just throwing out a number like "192kHz!". Second, I suspect the process whereby that answer is arrived at could allow a fundamental shift in consumer expectations if actually accepted by the public, and implemented professionally. It could make a substantial dent to calling out that proverbial elephant in the room and setting us free from ridiculous over simplifications like focusing on just bitrate / bitdepth / samplerate or simply MP3 vs. lossless. Educating the general public on how to listen for a quality mastering job that encompasses the full dynamic range, natural sound (eg. judicious EQ), with fully detailed resolution would in itself be the most beneficial outcome of this whole "high resolution audio" endeavor even though it may have started with "objective" parameters like pushing 24-bit and 96+kHz... I trust that already many of us have experienced 24/96+ music which is either no better than an equivalent CD (have a look at most of the new pop releases on HDTracks like Beck's Morning Phase), or in some cases the "high-resolution remaster" sounds worse.

There are suggestions in these presentations that Pono somehow represents a "legacy" (1) that Neil Young wants to leave beyond his copious body of work already. There is certainly an opportunity. But I believe it's not going to come from geeky talk about sample rates and meaningless stats like "30x more data than MP3" with a graph to accompany the rhetoric as if this directly correlates to sound quality. It's going to come from choices made and promoted about not just the provenance (ie. where the audio recording came from including true hi-res recording practices - see Mark Waldrep's site), but the technical and artistic bit around adjudicating what actually sounds "best" and which of the versions of many recordings is "best" irrespective of the file type. Does the artist choose which version is best? Is it down to vital stats like dynamic range (eg. something like DR values)? Is it up to the record labels thinking that the most recent "anniversary" remaster is best? In Neil Young's ears we trust? Or a mindless adherence to 24-bits and 192kHz sampling rate?

No my friends, on the first day that the Pono Music site is up, I'm not really going to care whether the PonoPlayer sounds great (it better for essentially a no-frills unconnected music player at the >$300 price point), or if the website is user friendly (2), or how many albums are available to choose from... I mainly want to know whether they're selling the first digital release of Nirvana's Nevermind (16/44), the 1996 MFSL remaster (16/44), the HDTracks 2011 remaster at 24/96, or the Blu-Ray 2013 24/96. Nevermind is of course just one of many albums to keep an eye on for what Pono does... Pono's offering will speak volumes about their commitment and whether this "movement" has any steam - are they walking the talk about "good sound", stuck with fancy specification numbers, or just "nothing new"?

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(1) See around 7:00 into this Esquire interview.

(2) There's time to optimize and streamline the website. A nice website with full provenance data and ability for consumers to leave comments & reviews would be awesome of course.