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Stereonet Australia Show 2025

It's not fair to compare something manufactured in the dozens to something that is manufactured in the thousands. Of course you can include incredible tech in a pair of wireless IEM's. But for a very small production run ... unless it is available off the shelf, you won't have the R&D budget to develop it and then sell it for a low price.

You can try it. Come up with a plan to make 10 wireless IEM's which you manufacture from scratch, include bluetooth and spatial audio, and sell it for less than $100, and still make a profit.
 
My highlight of the show was the Alsyvox / Aries Cerat room. They were showing the baby Alsyvox speakers - the Tintorettos. These are 3 way planar ribbons. I have read a lot about Alsyvox on WBF, and those guys think it is amazing. I have to agree. They really do everything - throw a wide and stable image with a lot of depth, excellent separation of instruments, excellent reproduction of timbre. But what was really more impressive was the tactility of the sound - you can actually feel the sound in the way that you can feel a real instrument in the room. Complex and loud orchestral music is a good test - if you can still hear separate instruments with their timbres preserved and no smearing when the orchestra is going full tilt, it is doing very well.
I really liked these speakers, but lots of other people have made comments about how good they were.
So now I am in the stupid position of considering them for purchase.
Have they ever been measured?
I would quite like to hear them again, so might need a quick trip to Brissie to reconfirm that they were as amazing as i thought ....
 
Have they ever been measured?

As far as I am aware, probably only by the manufacturer. If you are seriously considering them, email the distributor and ask them to supply the measurements.

I can't get the sound of those speakers out of my head. I really need to figure out what their secret sauce is, and find a much cheaper speaker that produces that "tactile" sound. If you buy them, i'll be over at your house every day ;)
 
I can't get the sound of those speakers out of my head. I really need to figure out what their secret sauce is, and find a much cheaper speaker that produces that "tactile" sound.
Thanks very much for this show coverage @Keith_W - I went the last few years but had family stuff on this time, and missed out.

I’m disappointed not to have heard these Alsyvoxes - intriguing description of the sound. Perhaps ironically, the only big ribbons I’ve heard are Ambience hybrids, and my main complaint was they lacked “tactility” compared with conventional driver designs!

It would be great if we could isolate this textural quality and measure other transducers for it somehow….
 
Best show reviews I have ever read. There is a lot of bad sound at most shows, and almost every review gives glowing and untrue reviews. I forwarded your work to several friends. Keep up the unbelievable (and I mean that sincerely, I wouldn't have believed that was an honest reviewed out there) work!
 
View attachment 473404

Another highlight of the show (being a DSP nerd) was the DEQX room. That's Kim Ryrie on the right, one of the founders of DEQX. Alan Langford (the other founder) looked like he had been up all night and declined to be photographed. The gentleman on the left is Steven, who designed the speakers that you see.

View attachment 473416

DEQX was showing off their new Dolby Processor. IOW it's the only linear-phase Dolby Processor in the world, apart from Trinnov. It takes a HDMI input and does the decoding. It has 8 Dante outputs, each equipped with PoE (Power over Ethernet) that can go to other Dante capable DEQX devices, such as the Premate 8, the LS200 (a 2 channel DSP processor), and a their new amplifiers shown below.

View attachment 473417View attachment 473418

This is DEQX's new Class O amplifier. I asked ... "Class O? Never heard of it". Answer: that's because they invented it. "O" stands for "Open Loop", so it is an open loop Class D. An amplifier designer I was with thought that it was crazy to design an open loop amplifier. But me, I have no opinion. I have no interest in amplifiers - to me, if they do the job, and don't go unstable, they are fine. Can someone tell me what's wrong with open loop amplifiers? Genuine question - I don't know the answer, and I am not here to promote or defend them.

As you can see, it's a tiny little thing. See the Dante network port for an idea of its size. There is no power supply, it receives power from PoE. The outputs labelled Ch1 and Ch2 are speaker level outputs. It makes 30W RMS, but is capable of 300W for 300ms. This design means that it is severely limited with compatibility, and MUST be used with a Dante and PoE.

I dunno man, I like the idea of a linear-phase Dolby decoder, but this thing is really niche. Almost as if some engineer went wild with a minimalist concept without a marketing guy (sometimes you need them) putting the brakes on that idea. They are selling it as an AV preamp with the flexibility of choosing as many amplifier output modules as you need. I didn't ask about price, but it better come in at less than AUD$1000. Because I can think of some other Class D amps without the same limitations of compatibility that I would rather own. I mean, there is a reason why all other AVR's have XLR outputs instead of Dante/PoE outputs. You don't get the flexibility of up to 64 Dante endpoints, but i'm not sure the average HT needs that many endpoints. Maybe they aren't targeting the domestic market.

View attachment 473419

This is Glenn Dickins, the DSP guru at DEQX. He is one of the fathers of linear-phase, a big proponent of FIR, helped develop Dolby Atmos, and has multiple DSP related patents. We exchanged phone numbers, and he sent me this message:

View attachment 473420

The Youtube link goes to an AES presentation by Francis Rumsey about spatial audio, and the rest of what he said ... I had to do some serious Googling before I understood what he was talking about. As a doctor, I have to explain technical terms to non-technical people, and it is vital they understand. Engineers mostly talk to each other. Maybe they might have to speak to marketing or accounting. So the flurry of jargon was too much for my brain to process even though I have a better understanding of DSP and signal processing than most hobbyists.

He agreed to do a Q&A session for ASR, so I will think of some questions and send them to him. If you guys have questions, feel free to post them in this thread or DM me. He had some opinions which were different to my understanding of DSP (for e.g. he thinks that 8192 taps per channel at 48kHz is enough - "show me a system that needs more than a 6Hz bin size"). I am in no position to disagree with him (he is a Professor, I am a hobbyist!), so the best I can say is that I have not yet been persuaded. "Disagreement" is too strong a word, I am not qualified to disagree.
DEQX Dolby home theater decoding? Wow. The very thought sends my mind off into non-cartesian space....
 
As far as I am aware, probably only by the manufacturer. If you are seriously considering them, email the distributor and ask them to supply the measurements.

I can't get the sound of those speakers out of my head. I really need to figure out what their secret sauce is, and find a much cheaper speaker that produces that "tactile" sound. If you buy them, i'll be over at your house every day ;)
I now regret I didn't hear them in Munich some years ago.
I vaguely remember judging them (obviously wrongly) by the absence of visible woofers (so intuitively no mid-bass slam in my mind) and never spend a minute.

I'm really curious now.
 
I'm really curious now.

A few years ago I came across this thread on WBF, where the OP said "the speakers were not only the best at the show, but the best he had ever heard, period".

I dismissed that as typical subjectivist overstatement. Then I saw them one by one sell their high end speakers and buy Alsyvox. Now, these are the same guys who don't blink an eyelid dropping tens of thousands on a Taiko streamer, or DCS, or MSB. A few of them (I know at least one!) have million dollar systems. IOW some of them have a proven track record of having such acute and incredible hearing, that they can hear their own imagination. WBF guys aren't "normal" audiophiles, my view of them is they are all retired doctors or dentists who drive their Mercs to country clubs / have private marinas / fashionable wives half their age. So, I don't take them too seriously. I filed Alsyvox into "something to keep an eye on".

Well, now that i've heard them, I have to concur with those WBF guys. These were not only the best at the show, but probably one of the best speakers I have ever heard, if not THE best. I know that I am risking my reputation by making a statement like that, given that I haven't seen the measurements (!!!) but if i'm wrong, then i'm wrong! I still think they're incredible!
 
While there are many audiophiles that don't necessarily use their ears, we should be careful putting everyone in that box.

And is it really any better to believe that small speakers with a collapsing polar, high modulation distortion particular in the bass, do little or nothing to minimize sensitive reflections are statement speakers and following the misleading Spinorama?
 
Nah. I would rather discuss the merits of the show without getting into arguments about power cords, DAC's, or streamers. In fact, all I cared about was speakers and rooms. The amps only mattered if they were inadequate.

There was a price list on cables and power cords stuck to a wall, won’t mentioned the brand or the rep, when we saw that we walked straight out; not interested in the product or the the rest….
 
Have to say that we walked into the the JBL room and nothing was working. We only stepped into this room because someone we were with had the L100. The reps got us to put the summit tee shirt on to get a group photo. Then they handed out tickets with numbers and told one of us will be winning a prize. Never won a thing in my life and there you have it, I won a pair of JBL Tour Pro 2 IEMs. Once they got things going the Mark Lavinson amp driving that JBL summit produced some of the dynamic unrestricted and clear sound pressure for such a small book shelf speaker that had no right to do what it did, I was absolutely blown away….
 
View attachment 473404

Another highlight of the show (being a DSP nerd) was the DEQX room. That's Kim Ryrie on the right, one of the founders of DEQX. Alan Langford (the other founder) looked like he had been up all night and declined to be photographed. The gentleman on the left is Steven, who designed the speakers that you see.

View attachment 473416

DEQX was showing off their new Dolby Processor. IOW it's the only linear-phase Dolby Processor in the world, apart from Trinnov. It takes a HDMI input and does the decoding. It has 8 Dante outputs, each equipped with PoE (Power over Ethernet) that can go to other Dante capable DEQX devices, such as the Premate 8, the LS200 (a 2 channel DSP processor), and a their new amplifiers shown below.

View attachment 473417View attachment 473418

This is DEQX's new Class O amplifier. I asked ... "Class O? Never heard of it". Answer: that's because they invented it. "O" stands for "Open Loop", so it is an open loop Class D. An amplifier designer I was with thought that it was crazy to design an open loop amplifier. But me, I have no opinion. I have no interest in amplifiers - to me, if they do the job, and don't go unstable, they are fine. Can someone tell me what's wrong with open loop amplifiers? Genuine question - I don't know the answer, and I am not here to promote or defend them.

As you can see, it's a tiny little thing. See the Dante network port for an idea of its size. There is no power supply, it receives power from PoE. The outputs labelled Ch1 and Ch2 are speaker level outputs. It makes 30W RMS, but is capable of 300W for 300ms. This design means that it is severely limited with compatibility, and MUST be used with a Dante and PoE.

I dunno man, I like the idea of a linear-phase Dolby decoder, but this thing is really niche. Almost as if some engineer went wild with a minimalist concept without a marketing guy (sometimes you need them) putting the brakes on that idea. They are selling it as an AV preamp with the flexibility of choosing as many amplifier output modules as you need. I didn't ask about price, but it better come in at less than AUD$1000. Because I can think of some other Class D amps without the same limitations of compatibility that I would rather own. I mean, there is a reason why all other AVR's have XLR outputs instead of Dante/PoE outputs. You don't get the flexibility of up to 64 Dante endpoints, but i'm not sure the average HT needs that many endpoints. Maybe they aren't targeting the domestic market.

View attachment 473419

This is Glenn Dickins, the DSP guru at DEQX. He is one of the fathers of linear-phase, a big proponent of FIR, helped develop Dolby Atmos, and has multiple DSP related patents. We exchanged phone numbers, and he sent me this message:

View attachment 473420

The Youtube link goes to an AES presentation by Francis Rumsey about spatial audio, and the rest of what he said ... I had to do some serious Googling before I understood what he was talking about. As a doctor, I have to explain technical terms to non-technical people, and it is vital they understand. Engineers mostly talk to each other. Maybe they might have to speak to marketing or accounting. So the flurry of jargon was too much for my brain to process even though I have a better understanding of DSP and signal processing than most hobbyists.

He agreed to do a Q&A session for ASR, so I will think of some questions and send them to him. If you guys have questions, feel free to post them in this thread or DM me. He had some opinions which were different to my understanding of DSP (for e.g. he thinks that 8192 taps per channel at 48kHz is enough - "show me a system that needs more than a 6Hz bin size"). I am in no position to disagree with him (he is a Professor, I am a hobbyist!), so the best I can say is that I have not yet been persuaded. "Disagreement" is too strong a word, I am not qualified to disagree.

To be honest DEXQ can really make or break SQ in a room no matter what equipment you have, I have experienced before and after measurement implementations in a room and DEXQ measures does sound better with better detailed information compared to unmeasured. The technical spiel on why you should go active I get it, the technical background and the patents that these guys have licensed I get the expertise, then we have the 3 way active with all Purifi drivers and SB Acoustic tweeters so we are not talking about low spec drivers! It’s either the music content they were using at the time I walked into that demonstration just left me wanting….. totally disappointed! There were other rooms that had passive drivers, and much more pleasing. Then the Summit Serious from JBL, those bookshelf speakers physically defy the science and the size tells you it should not sound like this but they just punch through any expectations I had on a bookshelf…..go figure!
 
It’s either the music content they were using at the time I walked into that demonstration just left me wanting….. totally disappointed!

I avoided commenting on the sound of the DEQX room. But I agree with you, this year's demonstration wasn't as good as last year's, or even the year before. What is typical of the speaker they usually bring along is exceptional clarity and tonal correctness. This year, it was tonally correct, but somehow the clarity and immediacy was not there.
 
I avoided commenting on the sound of the DEQX room. But I agree with you, this year's demonstration wasn't as good as last year's, or even the year before. What is typical of the speaker they usually bring along is exceptional clarity and tonal correctness. This year, it was tonally correct, but somehow the clarity and immediacy was not there.

One of the best memerable DEQX was used as a Preamp into a Magtech driving a set of Magnaplanar 1.7r. Bill Mclean partnered with DEQX that year in one of the rooms sure pushed me into the area that DSP correction was the way to go and almost got into it during that demo. I walked passed that room a few hours later and the room was packed, the music content they were playing was Leon Cohen Hallalujah live and even outside in the corridor it sounded like it was done live in that room! super impressive!

Have to say I wont mentioned the brand but one year I bitterly complained about a room that echo its rubbish sound "transistor AM radio " SQ that was distorted and grated my ears! when i walked in its expensive valve gear that i could never afford commanding an expensive JBL horns and drivers; forgot the model also in the $100K that i couldnt afford. I said to a few SNAers at the show that theres something wrong with the gear as the distortion wasnt tolerable, some of the comments came back surprises me just how diverse we are on SQ. But this is why I go to shows like this and make an effort every year, you review equipment that youll never see on demo and experience whats possible, looking ar forum discussions and magazine pictures can never replaced being there with your ears listening to whats on demo... The home theatre set up were some of the impressive demos around, certainly demonstrates whats possible and can be possible in a home environment.
 
I'm not sure which year you are referring to, but there was ONE year where a certain horn loudspeaker brand brought along some of their most expensive speakers and put it in the hands of a complete numbskull demonstrator who paired it with valve amps and then proceeded to blast the hell out of it. That room was so loud that it was unlistenable. Nobody could stand the ear splitting SPL's and obvious distortion so they all got the hell out. I gave them some polite feedback about turning down the volume, which they did for a few minutes while I was there. But when I walked past them later in the day, the volume was back up.

Anyway, very few of the demonstrators this year made such rookie mistakes. More of them brought some form of room treatment along, and a few were even using DSP.

My suggestion to the organizers (if they are reading this) is to quarantine the HT guys to one wing of the hotel. This year, the victim of the HT crowd was the Estelon / Devialet / Wilson room. Poor bastards.
 
This was on again over the weekend at the same location they use every year. Previous show reports: 2024, 2023.

I have to say that the standard of the show improves every year. Earlier shows suffered from overcrowding and general poor sound due to demonstrators bringing wrong speakers for the rooms (either too big or too small). There was also a lot of sound leakage from HT demonstrators. This year the show has expanded, occupied more floor space, and the HT guys were shoved into a corner of the show where their explosions couldn't bother the rest of us. So the overall organization of the show is much better - kudos to the guys behind the scenes. Excellent work!

Some negatives though: the food options were awful and expensive, the coffee was insipid. It's the hotel's fault and not the organizers. Also, this year there was a huge protest in the city with thousands of protestors and counter-protestors, and hundreds of police which stopped a lot of people from attending on Sunday. Good for us who managed to get there, not so good for those who were stuck when public transport was brought to a standstill.

Anyway, on with the show report. I had more time this year, and I chatted with other show goers and made sure to visit the rooms they rated highly.

View attachment 473385

My highlight of the show was the Alsyvox / Aries Cerat room. They were showing the baby Alsyvox speakers - the Tintorettos. These are 3 way planar ribbons. I have read a lot about Alsyvox on WBF, and those guys think it is amazing. I have to agree. They really do everything - throw a wide and stable image with a lot of depth, excellent separation of instruments, excellent reproduction of timbre. But what was really more impressive was the tactility of the sound - you can actually feel the sound in the way that you can feel a real instrument in the room. Complex and loud orchestral music is a good test - if you can still hear separate instruments with their timbres preserved and no smearing when the orchestra is going full tilt, it is doing very well. These things did reproduce Shostakovich very well, but there was some smearing in the midbass. I could also tell that they must be quite directional because the tonality shifted quite a bit off-axis. They aren't laser focused like some other panels, but they were probably about 45deg. My guess.

I grabbed as many friends as I could and visited the room over and over. They were all impressed. One of my friends is the Australian distributor for Klippel and a speaker manufacturer - a hard nosed objectivist if you've ever met one. I told him what I thought of the sound, and I asked him what is producing that tactility (he heard it too). He thought that you might see it in the CSD. "Being planars, the CSD would be very impressive. There will be no box resonances and it should be very clean". But the tactility? He did not know. My theory is that these things probably radiate like line arrays which means that most of the time we are sitting in the acoustic nearfield where the sound does not decay according to the inverse square law. But in the end it's all speculation - until we see some measurements of this thing, we just don't know. The demonstrator wasn't very knowledgeable in that regard, he was more interested in telling me about amplifier and speaker cable pairings, but he did promise me he would obtain measurements from Alsyvox if I email him. I am not likely to email him because of the stupendous price of these speakers - AUD$145k (USD$95k). But it might almost be worth it because I have never heard a speaker that does tactility and timbre like these speakers do.

View attachment 473388

Directly opposite the Alsyvox room was my other highlight - the YG Acoustics room driven by Vitus amplifiers. These were the Sonja 3.2 speakers and retail for AUD$179k (USD$117k). Another stupendously priced loudspeaker. I know from my own measurements of a cheaper YG model that those things had a flat frequency response at listening position which means they likely had a rising frequency response at 1m. The owner of that system spent a lot of money on a professional acoustician who treated his room, so IMO his system sounded much better than this one (yes Sam, if you are reading this, that's you!). The construction of these Sonjas is impressive - all aluminium and the finish was impeccable. This system had a very sharp attack and the dynamics were very good. It has the same tactility as the Alsyvox but the tone was on the brighter side. The room supplied by the hotel was identical, but this room had more issues than the Alsyvox room - probably because the speaker excited the room differently. The sound wasn't bad, I could easily live with this system. Unfortunately, it costs more than the system next door and it was less convincing.

View attachment 473397

This was the Wilson-Benesch / Halcro room. WB was demonstrating the Discovery 3zero speaker, and Halcro showed off their Eclipse monoblocks capable of 300W RMS sustained and 2.1kW peak. This room was highly rated by subjectivists at the show for its clean sound, and I had to agree. Those shiny things you see at the bottom is a woofer. This thing is configured as a 2 way with isobaric woofers. It misses out on the bottom octave and it badly needed a subwoofer. There were no sonic flaws that I could detect. The demonstrators were smart enough not to load the room with listening chairs. 6 seats, one sweet spot, and that's it. Everyone else had to wait. If you managed to claim that sweet spot (as I did) you would be rewarded with sound almost as good as you would get at home. It sounded a little lean, but it was neutral and the imaging was quite good given the limitations of the room.

I asked the demonstrator a rather naughty question - "The predecessor of this amplifier was rated by Stereophile as the best amplifier in the world, with 1 part per billion of distortion. What improvements have been made from that? You can't hear distortion that low, why buy this amplifier (AUD$140k/USD$93k) when the superseded model is selling for such a heavy discount?". He went on about oscilloscopes tell you one thing, but you need to design amplifiers with your ears, and these sound better, etc. IOW he tried to feed me a bunch of marketing. That's ok, he didn't work for Halcro, he was the distributor. I would be disappointed if an engineer said that, but a distributor is a businessman, not an engineer.

I have to remember to check this audio shows for more often! I missed this report.

Wow Kieth, this was really awesome! You really put in a lot of work here and I really appreciate the photos and the level of detail you went into with your impressions.

I’m fascinated that you were so taken with the Aslyvox speakers because I have been somewhat infatuated by those… but I’ve never heard them. I have seen the boys on WBF talking about them, but I’ve also seen plenty of other user reports both from shows and elsewhere raving about them. I also love how they look for a panel speaker.

I find it interesting that you were taken by the particular “tactile” sound because that for me is where panel speakers have not satisfied me. I find they sound boxless, but also a little bit ghostly, like I’m staring through a porthole to music happening in a different room.
I find this most pronounced with electrostatic speakers, with ribbon speakers (eg big Maggies) having a bit more meat to the sound, but still not to the extent of many box speakers. I tend to associate tactile impressions of instruments and voices - by which I mean, a sense of density and thereness, where it feels like you’re in the presence of an instrument actually moving air in the room - with good horn speakers, most of all. I’ve long been sort of obsessed with this aspect of loudspeaker performance, but I’ve never had the type of room that could accommodate horns. However among regular dynamic speakers, I have found Thiel speakers excel in this area, which is why I have kept going back to them for many years.

Anyway, from previous descriptions, including yours, the Aslyvox is often described as combining the classic attributes of a panel speaker but with great tactile/density and dynamics…. which to me sounds close to a holy Grail speaker. Which is why I’ve always wanted to hear them.

You might be interested in the recent review of THESE ASLYVOX SPEAKERS in the Absolute Sound.

Apparently, it started from TAS reviewers at an audio show a while back telling each other “ you have to hear this” and being dragged into the Aslyvox room. I think it’s quite interesting to read the report of somebody who actually got to live with those speakers for a while. (as well as going into the technical detail details.). I personally seem to get a good sense of the sound from Robert Harley’s descriptions, in which he seems to note some of the characteristics you mentioned.

Some quotes:

It doesn’t take a “golden ear” or even any previous exposure to high-quality audio to instantly appreciate that the Caravaggio doesn’t sound like a box speaker. It has a vivid and lifelike realism in timbre, imaging, transient speed, resolution, physical energy, and in dynamics that make it sound that much closer to live music. The instant the music starts, there’s a sudden frisson of excitement as this remarkable loudspeaker brings the music to life.

This gestalt reaction is the result of a host of specific performance attributes that I shall try to parse and describe. The first is that the Caravaggio presents a kind of physicality to the sound, not just in the usual terms of bottom-end weight and heft, but in the tangibility and presence of instrumental and vocal images, both texturally and spatially. The impression of an instrument or vocalist existing in your listening room—right there—is spooky.

—————

I know a lot of people around here don’t give any credence to subjective reviews or descriptions, but I do. And when I see lots of people starting to converge in their descriptions of a loudspeaker… especially if they’re describing characteristics that I am very enthusiastic about… that often gets my butt out, searching for a way to hear them. Very often I’m very glad I made the effort. I hope you get to hear those speakers again too.

(I got to listen to some YG speakers at my pal’s house and like you, even after they were finally dialled in I didn’t find them a bit tilted up. But they were quite vivid.)
 
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