Periodic Audio Beryllium ( Be ) IEM review.


Periodic Audio have not paid or sponsored me for this review.
The views and opinions in this piece are unbiased and my own.

Dan and the team at Periodic were kind enough to send me out three review samples and the Be’s are the second out of three reviews.

They are priced at $299 as of this publication.

Review equipment and software used:

Samsung Galaxy Note Ten+.
Audioquest Dragonfly Black V1.5.
Qobuz Studio.

Packaging and accessories:

These are the second pair of iem’s I have tried out from Periodic Audio and the thing that stood out immediately was the theme around their product and packaging. The name Periodic Audio is a play on words and is a nod to the periodic table. As you will learn with Periodic Audio’s products, they’re all named in relation to the materials used. I think this is a brilliant approach.
The boxes themselves when opened up display a graph. We all know by now at The Audiophile Cafe that I don’t do measurements. However I do appreciate this touch and this will be something other reviewers or customers will no doubt enjoy.
The IEM’s themselves come securely packaged in the cardboard cutout alongside a smart round tin that can be easily pocketed.
Inside said tin are the accessories which include a flight adaptor, a generous selection of ear tips including some high quality foam tips and a 1/4 inch stereo adaptor.


Mechanical Elements

Transducer Diaphragm: Beryllium

Transducer Surround: Bonded PEEK

Transducer Basket: Aluminum

Transducer Magnet: N48H Grade Neodymium

Enclosure Body: Polycarbonate

Protective Grille: 316 Stainless Steel

Bonding Compound: Cyanoacrylate Adhesive

Sealant Compound: Polyvinyl Acetate

Mounting Tips: Medical Grade Silicone and Urethanes

All components are finite element analyzed for stress, strain, and durability.

Frequency Response – 12 Hz to 45 kHz.
Impedance – 32 Ohms nominal.
Sensitivity – 100 dB SPL at 1mW in ear.
Power Handling – 200 mW continuous.
Peak – SPL123 dB.
THD – Less than 1% THD at 1mW.


Cable Length – 1.5 m.
Mass – 2.8 / 9.3 g (IEM/Set).
Operational Temperature – -20 to +50°C.
Operational Humidity – 0-95% Relative Humidity.
NRR – 31.3 dB (foam eartrip).
Overall Length – 21 mm.
Body Diameter – 12 mm.
Nozzle Diameter – 6 mm.


Melting Point – 1560 Kelvin.
Speed of Sound – 12890 meters per second.
Young’s Modulus – 287 Gigapascals.
Brinell Hardness – 1320 Megapascals.


As I stated in my first review of the Periodic Audio Ti’s, the brand is fast becoming a favourite of mine when it comes to design, style, quality, sound and comfort. The Be’s may only be my second pair from Periodic Audio but they are a deal closer. Two Similar yet very different IEM’s built to the highest quality. They are simply a nod to some of the finest craftsmanship I’ve come across in my time as an audiophile and reviewer.
Unlike the Ti’s the Be’s have Beryllium transducer diaphragms. And it shows. But we’ll get into that in a moment.
The cable again is something I would like to see being looked at in following models. But I won’t get into that again as I have mentioned this in a previous review.


The Berylliums are a very comfortable pair of in ears.
They are lightweight and a good fit. The foam tips supplied have an excellent seal and grip my ears with no discomfort.
I could wear these for up to two hours with no pain or fatigue.
I will note here that although they won’t offer as good a seal as the foam tips, the silicone tips are comfier and allow me to listen for a touch longer.

Soundstage & Imaging:

Here’s where the Berylliums show their vast difference to the Titaniums that I previously reviewed.

A wider soundstage with a depth that surprised me. The Be’s put me in the middle of a large arena or stadium with ease. I found the foam tips narrowed the soundstage a touch but not by any great margin.
Instrument separation is excellent.


I won’t lie, I was expecting the bass to be far less present in the Berylliums in comparison to the Titaniums. However, taking a peek at the spec sheet had me anticipating something interesting. The Ti’s are capable of 16hz on paper where the Be’s are capable of 12hz…
The Berylliums go lower yet without the force of the Ti’s.
It’s a more refined tight bass with far more accuracy but still managing to hit hard when required and go deeper than you expect them to.


A smooth airy midrange with ultra fine clarity making the Berylliums really REALLY good with vocals, sax, cello…
It’s not harsh or overwhelming, more a forward, perfectly tuned midrange that sounds oh so good.


Fast, accurate highs that bring out all those little details that a lot of in ears struggle to reproduce. At times I felt like I was sat right next to the drummer and could hear even the softest of brush strokes.
In a word, breathtaking.

Summery and recommendations:

The Berylliums get The Audiophile Cafe 5 star award for their astounding level of clarity and comfort with premium craftsmanship and a fantastic design.

Where the Titaniums brought me that hard hitting punch that brought my electronic music alive, The Berylliums make jazz, classical, folk and Spanish guitar an utter pleasure to listen to with clarity, depth and sparkle that captures you.
Precision and premium are the keywords of the day here.
Worth every dollar of their $299 price tag.

All my thanks and best wishes to all of my readers.
Please don’t forget to leave any thoughts in the comments.
If you would like to join the facebook group I’ll leave a link just below.

The Audiophile Cafe is sponsored by a small group of brands. Helping me to gradually bring better content to you.

Thank you to Airpulse for their ongoing support and sponsorship.

The Audiophile Cafe needs your help.

Some of you who follow me, the blog, page and group on social media will know that I recently started a fundraiser on facebook to attempt to raise funds to help me provide better content here on the blog.

If any of you wish to help please know that I am eternally grateful for anything that you donate. No matter how big or small.

I will state for the record that I will never ask my readers for a subscription to read this blog. Not now, not in the future.

I will leave a link at the end of this article for anyone who wishes to help out.

Thank you for your continuing views and support.
Without you there would be no blog!

All my best. Paul.

Periodic Audio Titanium ( Ti ) IEM review.


Periodic Audio have not paid or sponsored me for this review.
The views and opinions in this piece are unbiased and my own.

Dan and the team at Periodic were kind enough to send me out three review samples and the Ti’s are the first in three reviews.

They are priced at $199 as of this publication.

Review equipment and software used:

Samsung Galaxy Note Ten+.
Audioquest Dragonfly Black V1.5.
Spotify Premium.
Astell & Kern AK70.
iBasso DX80.

Packaging and accessories:

These are the first items I have tried out from Periodic Audio and the thing that stood out immediately was the theme around their product and packaging.
The boxes themselves when opened up display a graph. We all know by now at The Audiophile Cafe that I don’t do measurements. However I do appreciate this touch and this will be something other reviewers or customers will no doubt enjoy.
The IEM’s themselves come securely packaged in the cardboard cutout alongside a smart looking little tin.
Inside said tin are the accessories which include a flight adaptor, a generous selection of ear tips and 1/4 inch stereo adaptor.


Frequency Response – 16 Hz to 30 kHz
Impedance – 32 Ohms nominal
Sensitivity – 96 dB SPL at 1mW in ear
Power Handling – 200 mW continuous
Peak SPL – 117.5 dB
THD – Less than 1.5% THD at 1mW
Cable Length – 1.5 m
Mass – 2.8 / 9.3 g (IEM/Set)
Operational Temperature – -20 to +50° C
Operational Humidity – 0-95% Relative Humidity
NRR – 31.3 dB (foam eartrip)
Overall Length – 21 mm
Body Diameter – 12 mm
Nozzle Diameter – 6 mm
Melting Point – 1941 Kelvin
Speed of Sound – 5090 meters per second
Young’s Modulus – 116 Gigapascals
Brinell Hardness – 2770 Megapascals


Periodic Audio are another brand rapidly gaining my respect for sheer attention to detail and a premium level of craftsmanship.
I will note that I believe at this price point the cable could have been a little more substantial, however it is well made and does not impede on the quality of the product or reproduction of sound. I do though feel like I need to be very careful with it when I’m out and about or winding it up to pack away. Then again I am very picky about cables so this could be my ocd rearing it’s ugly head just a touch.
Otherwise they are a joy to behold and handle. Very lightweight and I like the subtle design that Periodic have gone with.
The tin that comes with them has a lovely foam lining and a buttery smooth thread in the lid to fasten it in place. I only wish they made the tin slightly larger to easily accommodate the IEM’s, adaptor and eartips.
But this is only a side thought on my part. I don’t tend to carry a lot of ear tips on me.


The Titanium’s are very lightweight and fit in the ear very comfortably.
The silicone and urethane tips are silky soft but stay in my ears well without being dislodged with any ease.
I managed to get a good 2 hours listening time out of them, experiencing no discomfort or fatigue.

Soundstage & Imaging:

I will start here by mentioning a fantastic little “tool” on Periodic Audio’s website named the “Select-A-Tron” ( I just love that name! ).
They have a section that takes information from you about your listening preferences and preferred sound then scores each IEM out of ten, identifying which model is best suited to your requirements by means of highest score. I also found this tool to work independently from price. In other words they’re not trying to fool you into buying their most expensive IEM’s.
This is a great touch and I think something other brands could learn from!

The Titanium’s do not boast the widest soundstage. If I were to try to put the “stage” into words I would liken it to somewhere in between a large nightclub and a concert hall.
Instrument separation is good but it’s not the best.
But this isn’t necessarily a bad thing once you figure out what these particular IEM’s are all about.
They are extremely easy to drive straight off your phone or audio players headphone jack.


Oh my! Periodic aren’t lying when they state that low of 16hz in the spec sheet. These babies go low in all the right ways! Death Metal, Ska, Dubstep, Drum N Bass, Trance and Techno all get the large sweeping one second and pounding the next moment bass that they rightfully deserve.
I have other IEM’s that deliver damn good bass extension and performance but the Titanium’s are in another league.
They’re not the most accurate IEM’s but they sure do deliver the kind of lows and thump every bass head yearns for. Beats fans should really, No, seriously give these IEM’s a whirl.


Midrange is good, airy and carries vocals forward with decent pace and precision. Which is needed to compliment the sheer weight of bass the Titanium’s bring with them.


Forward. Highs are crisp and clear. Slightly lacking in precision but by no means in speed.

Summary and recommendation:

So you’ve heard me point out a few times that these aren’t the most detailed IEM’s. They’re not and Periodic Audio hold no pretence about this in their description of the Titanium’s.
They’re not going to make that jazz or classical album sing. They won’t make your favourite guitarist sound like they’re in an otherwise utterly silent room right next to you. It’s not what the Titanium’s are about.

I am in no way slating on or being negative about this pair of in ears.
What I’ve told you so far is what I believe and what Periodic state that these aren’t suited to.

What the Titanium’s are and what they utterly excel in is all the bass and raw punch you desire and then some. And when you think you have enough, they offer you more! They are one of the most lively pair of IEM’s I’ve heard to date. They are exciting and bring my EDM collection alive in a way few IEM’s can!
They have enough clarity and pace to keep up with the speed and volume that this kind of music delivers. Something my other headphones and IEM’s struggle with.

Most of my readers will know I’m an ex EDM DJ and these days that I’m a bit of a metal head.
Most of my headphones and IEM’s are better suited to my usual listening collection of Jazz, Classical, Spanish Guitar and so on. But when I brush off my old 12”’s from when I played in the clubs or dig out a favourite DJ/Producer set, whether it be Carl Cox, Sven Vath, Orbital, Altern-8 or LTJ-Bukem I only have a few IEM’s or headphones that I can turn to. The Titanium’s just got added to that small list and worked their way up to the top 3 of that EDM/Metal list.
They truly kick you where it counts. Close your eyes and you’re in your favourite nightclub. Your favourite set will pound and pound you like you want it to.
In a sentence? Raw, untamed and relentless in their delivery.

So if you’re a metal head, DJ, raver or bass junkie and looking for a pair of affordable IEM’s that will give you that bass delivery you’re looking for, look no further!!!
As an over all IEM they’re good so please don’t dismiss them entirely.
If you have the opportunity to give them a listen I strongly suggest that you do.

Add a headphone amplifier into the mix and brace yourself. But that’s another topic for another review. Coming very soon…

Thank you to Dan and the team at Periodic Audio for sending me out these very fine review samples.

As always, Thank you to my readers for taking the time in your day to read another publication from the Audiophile Cafe.
Stay well. Stay Safe. Make your favourite brew and go listen to some great music!
All my very best regards. Paul 🙂

The Audiophile Cafe Blog is now supported by a small group of sponsors so I can work to bring you better quality content as time goes on.

Thank you to the following in enabling me to bring better quality content and reviews to my readers.

Custom Cans.

Dekoni Audio Ear-pads Review.



Dekoni Audio have not paid or sponsored me for this review.
The views and opinions in this publication are unbiased and my own.

Dylan & Josh at Dekoni Audio kindly sent these samples out and they retail at $49.99 For the Sennheiser HD600 Choice Leather and $59.99 For the HifiMan HE400 Elite Velour.

Review equipment and software used:

MacBook Air running Spotify Premium.
Burson Audio Conductor 3X Performance.
Sennheiser HD600 with Custom Cans balanced cable.
HifiMan HE400 with Custom Cans balanced cable.

Packaging and Accessories:

The Dekoni ear pads come in simple but sturdy boxes.
The boxes have solid magnetic lids that snap into place and stay there.
No accessories are included and the ear pads come with the appropriate fittings already installed.



The Choice Leather pads are made from a luxurious soft and supple synthetic leather.

The Elite Velour are made from a premium feeling velour that is very soft but firm to the touch.

Both pairs have high quality stitching and the materials used are high grade. Both in appearance and texture.



Both sets of ear pads come with the required mounting plates already fitted so that fitting them is a breeze.
The HD600 pads just snap in with a firm careful push.
The HE400 pads are a little fiddly but still snap into place pretty easily once you’ve figured it out. And that’s it, you’re good to go.


I found both the velour and synthetic leather pads extremely comfy.
Both sets are deeper than the stock ear pads so give an extra level of padding and comfort, however didn’t increase the clamping force on either pair of headphones, if anything giving some relief. I wore both pairs for just over 3 hours with my glasses on with each and suffered no discomfort or fatigue. I found the Choice Leather to be particularly comfortable and had no issues with hot sticky ears.


The HE400 Elite Velour pads opened up the soundstage without losing any bass response. Highs are still accurate, however maybe a little dialled back. But we’re talking by a very small hardly noticeable level. Imaging is untouched.

The HD600 Choice Leather pads also opened up the soundstage and help to improve isolation with a good seal.
Bass is still punchy and accurate with added depth. Mids and highs are still crisp and precise. Highs are maybe a touch rolled off, but again only by a nearly noticeable amount.

In general I found both sets of pads tightened up the sound with a more open soundstage. Improving isolation and seal adding more depth of bass without losing any clarity. With just a very slight roll off in the higher frequencies.

Recommendation and summary:

I’ve tried other replacement pads in the past from other brands at around a similar price point.

In my experience I would say that Dekoni Audio have the edge in quality control and use of premium materials.

When I look at comfort, build quality and improvement in sound I believe they are worth their respective price tags.
I also look at the bigger picture here and like the improvements they add to two already fantastic pairs of headphones nudging them higher in my appreciation for them.

I would recommend Dekoni Audio ear pads to anyone who is looking for higher levels of comfort with the added bonus off a slight increase in sound quality.

I would like to thank Dylan and Josh at Dekoni Audio for sending out these review samples and being patient waiting for me to publish this review.

And of course thank you to my readers for taking time out of your day to have a read.
Please, if you like what you see, pass word to your friends.
Stay safe, Take care and see you all again very soon.

All my best. Paul.

RHA T20 Wireless IEM’s.

Disclaimer: I have not been paid or sponsored by RHA for this review.
The views in this publication are unbiased and my own.

Lorna and RHA kindly sent these IEM’s in for review and they currently sell for £199.95.


Review equipment and software used:

Samsung Galaxy Note 10 Plus.
Audioquest Dragonfly Black V1.5.
Spotify Premium.
Single ended output.

Astell & Kern AK70.
Balanced and single ended outputs.

iBasso Pelican PB2 balanced portable headphone amplifier.

Custom Forza AudioWorks balanced hybrid mmcx cable.

Packaging and accessories:

Where do I start? The RHA T20’s come boxed up in a lovely well presented package seen more in higher end products.
The box is packed with lots of accessories including some very premium “Attachments” which I will list below.

3 pairs of stainless steel tuning filters. Each pair has a different sound characteristic. These are screwed into and presented on a stainless steel holder which has a colour coded guide that clearly informs you which filter is which.
The holder itself is very well made with no sharp edges and a smooth black finish.

1 stainless steel card holding 10 pairs of ear tips.
6 pairs of dual density silicone ear tips. ( S, M & L )
2 pairs of dual flange silicone ear tips. ( S & L )
2 pairs of Comply Foam Comfort Tsx-400 ear tips. ( M )

Again this is very well made and presented and there are a good selection of tips to choose from as you can see.
This is also supplied in a smooth black finish.

1 single ended ( unbalanced ) OFC mmcx audio cable terminated in a 3.5mm jack.
Although the cable is shielded in rubber it feels and looks high end.
Made well and doesn’t feel delicate or fragile in any way.

1 SecureFlex Bluetooth Neckband with mmcx connectors.

1 USB A to USB type C charging cable.

1 Clothing clip.

1 Neoprene carrying pouch.

1 pair of T20 In-ear monitors.


RHA DualCoil drivers.
Swappable tuning filters.
12 hour SecureFlex Bluetooth neckband with High-Fidelity AptX.
3.5mm OFC unbalanced audio cable for wired High-Resolution listening.
Comfortable and ergonomic design for optimal noise cancelling.
Included assortment of accessories as seen above.
Detachable stainless steel housings.


The T20’s astonished me the moment I unboxed them.
For a sub £300 pair of IEM’s they ooze premium craftsmanship.
The IEM’s alone are made of a high grade stainless steel and finished in a smooth satin black.
Although they have stainless steel housings they’re not heavy. But we’ll get into that more when we speak about comfort.
The tuning filters are a great touch, really well made and are easy to screw and unscrew into place. The holder for the spare tuning filters is made of a high grade stainless steel and again finished in a really nice satin black. It has markings that are colour coded to the filters so you know which filter has what sound characteristics.
The ear tips supplied are of a high quality, extensive and yet again are housed in a stainless steel card in that superb satin black.
The unbalanced 3.5mm audio cable supplied has a rubber shielding but is of a thick, strong quality. The mmcx connectors are snappy and secure and the 3.5mm jack and Y-Splitter are again made of high grade materials.
This is my first pair of IEM’s with a neckband and it was an initial concern as I’ve never been keen on the design. However I was pleasantly impressed with both the build and the stable Bluetooth connection. It’s flexible but doesn’t give me any concerns of weak points or poor quality switches. The band is a soft silicone/rubber material but I have no worries of it wearing away any time soon.
The supplied carry case is made from neoprene and is just the right size and shape to house the T20’s, all three cables, the ear tips in their card and the tuning filters and holder without putting any strain on any of the items. I was even able to place a custom made FAW balanced cable with pigtail adaptor in the case securely along with everything else and it’s still a good fit.

You really couldn’t ask for more from a premium pair of IEM’s at this price point, and that’s before we get to the sound quality!

Getting set up:

RHA have made a Bluetooth neckband that is easy to pair with both Android & iOS.
There is no dedicated app which at first I was a bit disappointed about, however after using and listening to these IEM’s heavily for a few weeks I believe it would just complicate matters and the built in “EQ” settings on Spotify or other streaming apps are more than sufficient to make any tweaks if required.
So just pair the neckband and start listening.
On a side note, before fiddling around with EQ’s, try out the different tuning filters first. In my opinion they are the only tweak you’ll need to think about aside from finding the right ear tips for you.


I’ll cut to the chase here.
These are by far not my most expensive pair of IEM’s.
However they have rapidly become my “Go-To” in ears.
I get a near perfect fit in my ear canal , both cables supplied are comfy over the tops of my ears and don’t dig in or rub.
Of the ear tips I’ve so far tried they are all made of premium silicone and foam and are silky smooth in my ears.
Although the housings are made from stainless steel they don’t feel heavy, hard or cold. Against most of my lighter plastic IEM’s these are comfier by a mile.
Also, the housings are relatively small as you’ll see in some of the comparison images.
The neck band is light and soft and after a short while I can almost forget it’s there, similar to a necklace you constantly wear and get used to.
I’ve worn the T20’s in their various iterations and can say that I can happily wear them for well into three hours without any discomfort.


The RHA T20’s don’t have built in active noise cancelling, however they create a very good seal with the correct ear tips fitted. So they passively cancel noise very well.

When speaking to my wife over the phone and FaceTime we found the mic to be clear. Background noise can be heard but at ambient levels.


Soundstage isn’t narrow but I wouldn’t go as far as to say it was wide either. I imagine myself in a decent sized studio as I find the soundstage “focused”, almost like listening to a pair of near field monitors.

Imaging is exceedingly good with great instrument separation and positioning. I can make out each instrument with no fatigue or noise.

Noise floor is really low so I can listen to the T20’s at lower volumes and get fantastic results which is something most of my other IEM’s struggle with. Get a good seal and paired with the low noise floor and you’re golden!


Deep, rich, low, clinically precise bass.
I really can’t put it any better. It’s not often that I hear a pair of IEM’s or headphones for that matter that go low and deep while keeping control and sounding accurate.
The T20’s maintain good separation and pace even at the low end of the spectrum.


Luxurious, airy, smooth, extended.
The T20’s boast a lovely midrange that isn’t over extended or harsh.
I don’t like a lot of midrange but I’m beginning to find with certain IEM’s or headphones that I like a fair bit of midrange if it’s delivered perfectly. Yeh I’m a touch OCD about these things sometimes. And oh do the T20’s deliver!


Razor sharp, accurate, fast and agile.
The highs take point. Every high hat hit, even the softest brush,
Percussion instruments, strings and brass all come at you with a fast and accurate energy that is quite simply the tip of the sword of the T20’s sonic abilities.

Wired VS Wireless:

I didn’t notice much of a difference between wired or wireless use of the T20’s.
Obviously using them wirelessly you’re limited in power output. However saying that, the SecureFlex neckband delivers a solid connection and sound. I don’t find the need to crank the volume right up when using it.
As an extra I tried these IEM’s out with one of my custom balanced cables on both my AK70 and powered from my iBasso Pelican PB2 balanced amplifier and I heard a significant tightening up and boost in all areas of their sound quality.

Recommendations and summery:

Go out and buy these now! Whether you’re a veteran and have a fortune to throw around or you’re new to high end audio and are looking for a nice pair of entry level IEM’s.

RHA have knocked it out of the ball park.
The T20’s have astonished me with their level of craftsmanship, tuning, design and bang for your buck.
I expected them to be good and sound decent.
I did not expect them to blow me away the way in which they have.
Until something else comes along, out of all the IEM’s I have owned or sampled in this price range the T20’s have taken the top spot in my sub £300 list of favourites.

I have tried and I mean tried really hard to find something about the T20’s to dislike or be annoyed at. And I can’t.
There is no pros & cons list to see here.

At £199.95, quite simply, they are a steal.

Thank you Lorna & RHA for sending me out such a magnificent product and for your patience.
This was my first experience with an RHA product and I will most definitely be returning to them in the future!

As always, thanks for reading folks.