HP: Welcome to Head pie.

Mr.Mark Cerasuolo

HP:First of all tell us a little about yourself and the company, present and historical. 

For myself, I got into the audio industry formally in 1974, managing a stereo store in a Massachusetts college town.  Over the course of eight years in audio retail management I had intimate experience with about every major stereo brand as well as some less familiar ones, and got to meet many of the industry figures and pioneers behind the brands.  I worked with many dozens of brands, including AR, Advent, KLH, Yamaha, Pioneer, Sennheiser, Koss, ADS, Mitsubishi, Pioneer, Sansui, Dynaco, Onkyo, NAD, Tandberg, KEF, B&W, TEAC, Nakamichi—you name it, I sold it I think!  I also wrote the advertising for the various retail operations I managed, and after my first “factory” audio job—Technics in 1983—I went to work in a Boston-area advertising agency doing everything but audio.

That led to Bose Corporation in 1985, followed by corporate marketing positions at Marantz, JBL International, Harman/Kardon, and Carver.  Since leaving the last company in 1997 I’ve worked in the electrical and renewable energy industries. But I’ve always had a passion for audio products, especially ones that “punch above their weight” and are performance overachievers for their price.  I think that comes with having started selling audio to college students in my early days, where “best buy” status is all-important and the challenge is to match-up high-performance components at a very affordable price.

That idea is what led to The Sustainable Rhythm Project (SRP), my new company.  Working for well-know audio brand manufacturers, I always had an idea of what I’d like to do to make a given level of performance more accessible to a wider audience.  SRP was created to do exactly that: identify and even ultimately build audio products that bring elite audio performance to all listeners.  In my years of experience marketing major brands I learned that there is really no such thing as an “average” listener—everyone becomes a skilled listener once they are exposed to good audio, because everyone instinctively knows how voices and other everyday audible cues are supposed to sound.  And “good audio” need not be expensive.  From years of retailing I developed a strong sense of where the point of diminishing returns sets in—that price beyond which spending more money makes relatively little difference in the outcome.  SRP’s goal is to hit that point accurately every time, where performance meets the needs of skilled listeners and spending more won’t substantially change that.

CT-5 model.

HP:Please tell us about your current product line up.

Well, it’s as new as 1950!  That’s the year the renowned science-fiction writer Arthur C. Clarke invented the concept of noise-canceling electronics in the short story “Silence, Please.”  Everyone is familiar with Bose bringing the technology to market in 1988 with their Automatic Noise Canceling headsets.  That launch was one of the last projects I worked on at that company in fact, and I always loved the idea of using noise to cancel noise.  Bose developed that into a consumer line of course and a very successful one—look around you in the cabin of any passenger airliner today.  And a lot of other brands have joined in, to the point where fashion is now outpacing form and function.

That’s where SRP intends to make a difference.  We have two models of ANC headphones designed for active travelers, both designed to precisely hit that diminishing returns point and satisfy the listener.  The smaller one, Compact Traveler 5, is actually the most compact noise-canceling headphone I’ve found that achieves on-ear performance and comfort.  It’s what I always wanted for shorter trips with one carry-on, something that achieves full-size performance yet literally could fit into my pocket.   The larger Studio Traveler 5 outperforms comparable noise-canceling headphones at twice its price.

Both models are invested with 1. Precisely the technology and features needed for superior performance in their size (CT-5) and price (ST-5) range, and 2. Exactly the build quality needed to meet the demands of the busiest travelers.  So every cent that goes into the headphones is invested in these two areas, where it can make a difference.  The “retro” metallic screen for example wears unusually well and stands up to being jammed into seatbacks and stuffed briefcases.  I’ve tested that myself, having traveled with them for a long time now.  In fact I initially picked up a pair out of curiosity and thought “why not make them available to everyone?”

The “sustainable” part comes from our philosophy of choosing environmentally and socially responsible partners whenever possible to bring audio products of outstanding value to the market (as well as adhering to all industry standards and using low-impact minimalistic packaging and shipping materials).  On our partners, our headphones are precision-made by a small, high-tech family business in Taiwan and our main contact there is a fellow University of Massachusetts alumnus of mine, in fact—this is not some faceless supplier!  There’s no shortage of mainland China headphone companies, just take a look on Ali Baba at all the knock-offs out there.  SRP is unique with our source, which has built patented noise-canceling technology in the two models.  That’s why our ST-5 can deliver an outstanding 24dB of noise reduction, about 25% higher than the industry average for higher-end ANC headphones—yet sells for over 50% less.  You can’t achieve that just by copying someone, you have to be different in order to be better.  We do both, by design.

ST-5 model.

HP: You have several headphone products up and coming. Could you tell us a little about them.

Both have patented electronics technology on-board to get industry-leading noise-canceling performance at an unprecedented price.  One piece of feedback we get from the test market group is how comfortable they are.  We paid attention to that, using very high quality materials and incorporating ergonomic design.  I know from experience that a headphone you can wear for six hours or so in a cramped airliner and not even notice on your head is what you want when you travel, and these meet that objective.

HP: How would you describe the Sustainable Rhythm Project (SRP) sound signature?

I’d say the headphones are “enhanced neutral”—very open in the midrange without becoming harsh, wrapped with sufficient low-frequency “body” and high-frequency detailing that works well with diverse mobile devices.  That augmented midrange prioritization is very important.  In years of retailing high-quality audio products I noticed that the one performance that can never fool an accuracy test is the human voice, because that’s the one instrument with which every listener is intimately familiar throughout their entire lifetime.  Even people who play musical instruments can’t always tell exactly what they sound like because they are in that instruments near-field—in the case of horns, woodwinds, violins, strings and other instruments they are physically very closely connected to the instrument in fact, which induces resonances that further alter their sense of hearing.   But everyone is a qualified expert when it comes to determining the accuracy of a human voice.  If you get that right in a sound reproduction system the rest falls into place as the ear/brain system is satisfied as to the accuracy and clarity present.  So we pay extremely close attention to this area, going for ruthless fidelity in the vocal range.  It’s not so much a “signature” as a “core competency,” one that every system should have but few are optimized in that direction.

HP: Tell us a little about any future plans for your company.

We intend to really our presence as a high-end noise canceling headphone well below the high-end price range, and we think there is considerable potential in that category.  Beyond headphones, watch for the Free-Range speaker debut.  More details to come as we get closer, but we’re reviving some of the very advanced British work in optimized full-range designs and adapting them for the multimedia age and portable devices.  We also will be introducing some interesting audio niche products designed to help listeners integrated new and classic components, and will even get into some vintage components as part of that.  Re-purposing audio gear is yet another dimension in sustainability, after all.

HP: Anything else you`d like to add?

Yes, that SRP really is the culmination of two things:  First, some innovative ideas I would have loved to try at some of the iconic audio brands for which it was my privilege to work, but didn’t quite fit their particular style or strategy.  And second, everything I liked best from the over 100 audio brands I sold in my retail career.  If I roll that thinking up into a few radical products, this will be the result!

HP: Thank you for your time.

DITA - The Truth, special brass limited edition.

DITA do it again. These IEMs are simply gorgeous. 

Rudi0504 picked up a set while attending CanJam in Singapore.

Dita Audio + D.Bespoke + Patrick Chia brass edition. Limited to 20 sets worldwide.

Advanced AcousticWerks
AAW W500 AHMorph  unboxing
 - Rudi0504

I would like to share out the box 
AAW W500 AHMorph 
with adjustable Sound Signature.

I would like to say thank you to Rudy Yee Marketing Director from AAW Technology Pte Ltd Singapore for the review unit AAW W 500 Ahmorph.

Source :
Lotoo Paw Gold.
Iem :
AAW W500 Ahmorph.

Out the box Sound Quality.
Open and rich in Detail.
Very clear and sweet Mids.
Very good Bass Impact and very clean and fast bass response.
Separation :
Very good separation
Soundstage :
Very wide and has very good depth.

I will share more after burn in time.



Configuration: Proprietary 9mm Dynamic Driver + 4 x Balanced Armature Drivers
Hybrid System:
+TruXross 5 Way Passive Crossover - Physical Low Pass Filter on Dynamic Bass Driver + Electronic 4 Way Passive Crossover.
+Allocation: Dynamic Woofer|Low|Mid|High|Ultra-High 

Armature System:
+TruXross 4 Way Passive Crossover - Electronic 4 Way Passive Crossover.
+Allocation: Low|Mid|High|Ultra-High

+Triple Sound Bore Design+Frequency Range 18Hz-23000Hz
+Sensitivity 103.3dB SPL @ 1 mW
+Impedance: 15 ohm @ 1kHz
+THD <= 0.2% @ 1kHz
+26db+/- Ambient Noise Attenuation
+46" Null Audio Vitesse Cable(4 Braid Detachable)
+AAW Shock&Waterproof Carrying Case 
+Cleaning Brush & Cloth
+60 Day Refit Guarantee
+2 Year Limited Warranty
Continuously Adjustable Sound Signature by Re-allocation of Power between  Dynamic and Armature Drivers 
Complete disable of Dynamic Driver when dial fully tuned to Armature position(Clockwise) 

I would like to share one of my collections.
An article by Agung Haskara.

The limited edition Cypherus AX amp

Before we start, I want to share that my music preference is various genres of jazz and Latin songs starting from Miles Davis, Lisa Ekdahl, Tito Puente, to Quasimode
Songs tested are from the stated genre with file extension of DSD, FLAC 24, FLAC 16, and MP3 320 (to test the scalability of the amp).
DAPs used in this review is Calyx Cypherus Mod (will be reviewed later on), Iphone 4S, $1 DAP named Votre.
Brief introduction on this amp, this is made by Cypherus Audio X, a local audio equipment maker and modder and there will only be 20 of this amplifier (only less than half remain!). 
This is a discrete amplifier that uses handpicked set of triodes. Other amps that use this kind of system is the Aune B1 ($199), Cypher Labs Picollo ($400) and Cypherus Audio Amp LE is priced $200. Is this worth it? 

Let’s discuss

Build Quality
It is made with aluminum casing in the size of iPhone 4S and thickness of Calyx M. Solid and quite portable. Charging port lies in the back panel and the line in, headphone out stands in the front panel. Sadly, there is no gain switch on this amp, so you can only have the amp tuned for sensitive IEM, tuned for 300 Ohm headphone, or set to the highest for the most power hungry cans like AKG K1000. Too bad on this one but I prefer to use 300 Ohm and buy impedance adapter

Sound Quality
This is the real deal right?
Clean floor and background noise. Amazing in this price range. This amp is able to drive my Sennheiser HD 650. Sadly, the power is too much to handle for sensitive IEM. This can be helped by using impedance adapter to add the impedance.

Sound signature of this amp is neutral, no coloration, revealing, enhance the sound signature of paired cans & DAP. This amp will unleash the potential that your setup has.
This amp has high scalability. Warm and analogue sounding like Calyx Mod? It will become more analogue sounding. Have bright source? Will become brighter. Setup has piercing high that you almost give up or have a badly mastered/ recorded music? You have a bad news tongue emoticon
By using votre, iPhone 4S, Calyx Mod, scalability can be heared.
It’s not like a high-tamer like fiio amps, 3D effect maker like Cayin C5, or “music smoother” like portable tube amp.

This is like octane pills for your setup. Good setup will become better, not good setup will make the sound well..worse.

I can say that this one sounds like Picollo though the price is half the Picollo (and lend this amp and asked my friend on local meet and they say the same). This purely amplify the sound signature that your setup have. It’s a hit or miss.

Neutral, detail, clean floor and background noise, very revealing.
Not a “sound signature correction” amplifier, no rollable opamp (no opamp used), overpower gain for iem, too revealing, only built in small quantity.

if interested, feel free to contact
Cypherus Audio X
Herry Wijaya

Daniel finally received his COZOY Aegis in the mail.

See here for the giveaway we held.

As he noted to us, mail arrives quite slowly in his part of the world.

Now that it has finally arrived we can hold another giveaway! Yay!