Quick Thoughts: Ion by Soranik

Editor’s Note: Our thoughts are based on pre-production, prototype units of the Soranik Ion and may not necessarily be fully indicative of the state of the final production models. Pictures were generously provided by Soranik.

In the grand scheme of things, the financial requirements for becoming a custom IEM manufacturer are not all that stringent. You need some acrylic (or silicone), curing apparatuses, some cutting and polishing tools, a low-power field microscope, basic knowledge of circuit design, and some elbow grease — it’s no wonder several home-brew companies have popped up the past few years.

While these companies don’t necessarily have the marketing clout of, say, a Westone or Shure, they often have the charm of a singular purpose and philosophy, along with an assiduous moxie. If there is one major thing we here at CYMBACAVUM really care about when it comes to companies putting out new products, it’s effort. A product needn’t be “groundbreaking” or paradigm-shifting; what matters is that the company develop their products in a systematic,  thoughtful manner, applying scientific principle and craftsman art to a new offering.

Soranik is such a company. It’s small, it’s new, and it’s looking to gain some recognition, with one unique feature — it’s from Vietnam. Few Vietnamese companies populate the world of head-fi; Sunrise Audio comes to mind as the one major OEM/ODM with aspirations to maintain its own brand, but none have arisen from the bottom-up until now. Thus, it’s no wonder that young, cosmopolitan guys are at the helm of Soranik — Hieu Tran, the head designer, grew up in Vietnam but studied in the United Kingdom at the University of Warwick for an advanced degree in statistics and applied mathematics. It was during this time that he developed his interest in IEMs and tinkering with circuits.

However, the sonic inspiration for Soranik is not English, but Japanese. A lifelong fan of anime and admirer of the kaizen spirit of the Japanese, Tran (and his partners) developed a penchant for Keita Suyama’s FitEar IEMs and wished to localize a similar kind of sound in Vietnam. They began a few years ago, in a quasi-stealth mode, creating custom in-ears on a by-request basis. But Tran noticed that most people preferred the convenience of a universal, and being an owner of a TO GO! 334 himself, embarked on designing what he considered to be an augmented version. The result is the Ion, the first model Soranik is offering to customers beyond the familiar circles of the Vietnamese audio and musician community.

The Soranik Ion is inspired by FitEar but is a completely new earphone from the ground up.
The Soranik Ion is inspired by FitEar but is a completely new earphone from the ground up.

On first glance at the Ion, the FitEar inspiration is striking. It uses large, keyed two-pin connectors in the same way and the default colorway is near-opaque black, just like the TO GO! series from FitEar. The nozzle exit is clear, and the milled titanium tubes can be clearly seen. The build quality is good — not quite as precise as that of FitEar’s, but decent all-around. Tran spent years doing remolds for his friends before being confident enough to begin designing his own universal mold. Don’t mistake the Ion for a bizarro-esque imitation of the TO GO! 334, however —- the guts of the Ion are completely different and engineered from the ground-up to be its own beast. Soranik is rightly proud of the sweat and tears poured into the conception of the Ion, as it is the culmination of about two full years of research and experimentation from Tran.

The array of accessories for the Ion is standard-fare for a premium, custom-derived IEM: waterproof Pelican case, removable cables, and a wipe cloth.
The array of accessories for the Ion is standard-fare for a premium, custom-derived IEM: waterproof Pelican case, removable cables, and a wipe cloth.

Undoubtedly, many people will end up listening to the Ion in the months to come. They’ll share impressions on the positioning of the vocals, the slam of the bass, yada yada yada. What they won’t often mention, is how laborious the R&D process was for Tran. He tried just about everything, going through multiple different prototypes and developing his own titanium tube milling process. Ready-made titanium tubes, he felt, were too thick and made the music sound coarse. Apparently, the thickness and smoothness of the tubing affect more than the size constraints of an IEM; sonic resonances are measurably and subjectively affected as well. Local CNC contractors didn’t have the skill or patience to process low-volume, high technical requirement orders like his. So he learned to mill titanium on his own.

His main goal, though, was to improve the molasses-like bass of the 334 while preserving its vocal richness. And like a good engineer, he attempted to rectify these shortcomings with precise control of acoustic low-pass filters and judicious, minimal use of passive components.

The FitEar-style two-pin connector sockets are hand-molded.
The FitEar-style two-pin connector sockets are hand-molded.

He first sent CYMBACAVUM a prototype in September last year — a dual-woofered, dual titanium tube behemoth. They were really tip dependent (though Taylor Swift always sounded awesome with them), ranging from caramel vocals in a deep fit to energetic highs in a shallow one, and while they shared common traits with the 334, the soundstage presentation was very different. The prototype Ion had a wider, flatter soundstage, and was less smooth sounding. Fit was also a little awkward, as the nozzle exits were a bit long, causing the prototype to hang loosely off the ears. We suggested that Soranik rework the Ion prototype — mainly for purposes of ergonomics.

Fast forward six months, and the new Ion is completely different. Not only is it now much more comfortable, the sound signature is reworked. Tran collected feedback from us and others to create a different, crowd-pleaser type of signature — a good deal of bass, but well done and without strangulating impact/stuffiness. It still maintains good clarity, but with a kind of fuzzy warmth that many people like, and with the treble being smooth enough such that extremely compressed music (e.g. K-Pop) doesn’t sound horrible, all while preserving good treble extension.

The bespoke titanium tubes are a self-spun R&D project for Soranik.
The bespoke titanium tubes are a self-spun R&D project for Soranik.

Variance in sound signature due to depth of insertion is now not as variable (but is an unavoidable feature of sound physics), and coupled with the vastly improved fit, the Ion is comfortable as can be. We love the performance-style braided cables as well — these type of cables are sorely lacking in FitEar’s staple of 000/001/002/003/004/005 cables.

The Ion is a labor of love from Soranik, built with the kind of effort we here at CYMBACAVUM can really appreciate; we can’t wait to see what others have to say about it!

For more information, please visit Soranik’s Facebook page.

Celsus Sound: Trailblazing Wireless Freedom

Editor’s Note: Another incredibly late article — apologies to everyone all around! We’re extremely limited on time!

Last year, I had the good fortune of meeting with Jason Lim, co-founder and former CEO of Nuforce. Since leaving Nuforce (the company is now a subsidiary of Optoma), Mr. Lim has been busy. He founded Heap Venture, a holding company with a multi-pronged approach to home and personal audio. Aside from NuPrime, a direct vestige of Nuforce’s home audio products, Lim embarked on a completely new audio category with Celsus Sound. The bold, ambitious stated mission and purpose of Celsus Sound is the production of superior portable audio products for discerning music lovers, setting quality above all else. As the pilot brand of Heap Venture, Celsus Sound is focused on the premium market and it has attempted to do so with the Companion One. For example, solely in terms of build, the Companion One is milled from a single ingot of aluminum, with top and bottom covers cut from Corning Gorilla Glass.

The Companion One is the first of a new wave of wireless portable DAC devices.
The Companion One is the first of a new wave of wireless portable DAC devices.

The main trick up the sleeve of Celsus Sound, however, doesn’t involve the outer appearance of its products, but rather the inner guts. When it came out in the middle of last year, the Companion One was the world’s first portable DAC device to wirelessly stream high-resolution audio (up to 24-bit, 192 kHz) over wireless networks. While other devices have since attempted to bridge the gap, the Companion One came first, and it’s what we’ll quickly highlight here.


In order to do high-resolution, 24/192 PCM streaming over a typical 802.11 network, the Companion One had to utilize newly developed hardware from SaviAudio. The Taiwanese design startup (and hi-fi focused subsidiary of the larger, fabless ASIC firm Savitech), whose previous offerings were mostly for the budget-minded, developed a wireless streaming module dedicated to high-end audio. A naked demonstration of its capabilities are shown below:

Thus, this wireless streaming module, together with a 32/384 and DSD-cable USB receiver (SaviAudio is mostly known for its USB receiver modules) form the streaming digital heart of the Companion One. In turn, digital-to-analog conversion duties are handled by the now-ubiquitous ES9018K2M two-channel chip from ESSTech, kept pace by dual low-jitter oscillators (one for 44.1 kHz multiples and the other for 48 kHz multiples). The result is a very respectable >115 dB(A) SNR under a 10 kΩ load.

As for the analog end, the Companion One employs the OPA1612 for I/V conversion and the AD8397, doubling in duties for both voltage gain and current buffering. Celsus claims that the unit’s signal path and headphone amplifier circuit have been “painstakingly optimized for maximal headphone performance. ” The result is actually pretty impressive, pumping out detailed but liquid audio.

The Companion One, paired with Celsus Sound's Gramo One earbuds.
The Companion One, paired with Celsus Sound‘s Gramo One earbuds.

The Good: Mobile Device Connectivity

Setting up audio streaming via USB is as easy as plug and play, whether it be from my main mobile companion the Apple iPhone 6, or from any Android device. The sound quality, as mentioned, is great. I did experience a snafu during the latter stages of my loaner experience where an accidental press of a weird combination of keys tripped off the USB functionality, but the majority of the time, pairing mobile devices with the Companion One has been a breeze, and Celsus Sound provides Lightning, 40-Pin, micro-USB, and regular USB cables for connecting your devices — keyed for easy recognition, and no CCK or extra dongles necessary.

The Bad: How Minimal is too Minimal?

I can appreciate a nice minimal design aesthetic. The Companion One might resemble an oversized smartphone and these days smartphones don’t have many buttons to them, but this thing is still a DAC and the Companion One is just a toggle or two shy of a good user experience. Why use a button for selecting between wi-fi and USB, or between infrastructure and access point mode, when a toggle is far more intuitive?

Celsus Sound Companion One

The Ugly: Wireless Streaming

Alright, let me hit you with the bad news. The really bad news. The wireless streaming function has problems.

And when I write, “problems,” I mean the kind that will occasionally stutter your audio, color it with clicks, and lag hard enough to make a gamer break down in tears. Whether it is thru access point mode or client mode, via iOS AirPlay or Android DLNA, the latency from input action to device reaction is about 2-3 seconds. So that means that watching a YouTube video on your smartphone will not have synchronized audio, and skipping tracks as well as changing volume on iTunes is a waiting game.

Furthermore, streaming over Windows is not straightforward, unless you’re running iTunes’ AirPlay function, rather than DLNA via Windows Media Player. However, even AirPlay via Windows has issues, as volume will reset every single time you restart the program — the Companion One doesn’t seem to store volume data in memory for some reason (even though it does so through wired USB playback). If you’re using a sensitive earphone, don’t have them in your ears when you press play, lest you expect to be blasted with ear ringing SPLs.

So yes, to say that Celsus Sound has some kinks to work out with the streaming aspect of the Companion One‘s functionality is to be kind. At the same time, Celsus is not the only company with lag problems; even the insanely expensive Astell&Kern AK320 and AK380 have had issues with lag upon playback with its AK Connect app, though the problem isn’t as severe.

For all its issues, the Companion One does get the distinction of being the first device to pull off this wireless streaming capability — perhaps it is Celsus‘ way of navigating blue oceans, but I have to applaud Jason Lim for taking a risk and releasing products that few others are considering.

Celsus Sound Companion One

I mean the kind that will occasionally stutter your audio, color it with clicks, and lag hard enough to make a gamer break down in tears.

So let’s get on with the good news. The Companion One is 100% firmware upgradable, and all of these problems are solvable via software updates. The hardware is fine. The software isn’t — yet, especially when you’re a small company attempting an ambitious endeavor to stream both via AirDrop and DLNA on both desktop and mobile devices. The bottom line is that the Companion One, as cool as it is, is not quite ready for wireless primetime.

If you must get the Celsus Sound Companion One, get it first as a traditional portable DAC/amp. It works seamlessly with iOS and Android, as well as OSX. There are driver issues with Windows. There are more serious and crippling issues with wireless streaming. But it works well as a DAC, and the wireless capability will come along soon enough.

LIFE Acoustics & Kickstarter

Editor’s Note: We tend to publish in bursts. That’s just the way it works when none of us on the writing roster does this for a living — we write when we can, and all of us do it essentially on a volunteer basis. Not having much activity in between these bursts doesn’t mean we’re not working behind the scenes. After all, CYMBACAVUM is not purely a review platform; we seek not only to identify folks doing good work within the audio community, but also to push for ever better standards of performance. We may never be the first to “review” something, but we always strive to be the most insightful.
Continue reading LIFE Acoustics & Kickstarter

The Biz: E-Earphone’s CIEM Store in Akihabara, Tokyo

Founded by an Osakan man with a full head of hair and a hope to spread the spirit of porta-fi to the masses, E-Earphone is one of Japan’s premier personal audio store chains, with storefronts in both Tokyo and Osaka metropolises.

Its aisles upon aisles of headphones and earphones are famed to the enthusiast community, and when the CIEM specialty store opened its doors last August, Nathan of OHM Image and Headfonia went to take a look (link). This glowing report of toys abound convinced me that it had to be a must-see stop while I was on vacation in Tokyo last month. Continue reading The Biz: E-Earphone’s CIEM Store in Akihabara, Tokyo

Gojira! Or, how the DUNU DN-2000J changed my mind about hybrid IEMs

911? Meet Godzilla. Continue reading Gojira! Or, how the DUNU DN-2000J changed my mind about hybrid IEMs

Quick Thoughts: Sony’s Hybrid Evolution, from A to Z

Editor’s Note: This thing was supposed to come out months and months ago; it somehow slipped through the cracks. Better late than never, though.

Sony has been making a big push with its hybrid earphone models.

Last year, they released the first generation of their hybrid series in the XBA-H1, XBA-H2, and XBA-H3. Continue reading Quick Thoughts: Sony’s Hybrid Evolution, from A to Z

Etymotic MK5: Isolator, Reborn.

If you’ve been in this portable audio hobby for any length of time, then you’re aware of Etymotic Research. The Ilinois company, founded by Dr. Mead Killion, is legendary. Its flagship ER4 models (of which there are three variants) are a true mainstay in any portable listener’s collection. It has been tested and verified both by professionals and hobbyists alike to be amongst the most accurate sounding in-ears, decades running. Continue reading Etymotic MK5: Isolator, Reborn.