Category Archives: Headphone

The Hottest Reviews/Editorials – Oppo HA-2 & PM-2, Nexus 9, Samsung Galaxy A5, HTC One M9, Samsung Galaxy S6 & S6 Edge, Lumia 535, Acer Aspire 11& Iconia 8, Sony SBH80 & 50 more

If you have been busy over the last 10 days, don’t worry. Below are the reviews and special editorial pieces that have been published on Gavin’s Gadgets.

And stay tuned for more reviews over the next few weeks including HTC One M9, Samsung Galaxy S6 Edge 128gb, Official Samsung Galaxy Note 4 S Charger Kit, Oppo PM-2 Headphones, HTC Desire 820, Nokia Lumia 830 and the next episode of “Gav & Dave’s Tech Podcast”.

Tablets/Notebooks

Samsung Galaxy Tab S 10.5 Tablet review
Samsung Galaxy NotePro 12.2 – 9 Part Review
Acer V15 Nitro Windows 8.1 laptop review
Acer C720 Chromebook review
Acer Aspire Switch 11 review
Nvidia Shield Tablet – 7 Part review
Acer Iconia 8 Android Tablet review

Smartphones

Samsung Galaxy S6 and S6 Edge – Hands On
Yotaphone 2 – 4 Part review
Samsung Galaxy A5 review
Samsung Note Edge – 14 Part Review
Samsung Note 4 – 17 Part Review
BlackBerry Passport 10 Part Mammoth review
Apple iPhone 6 Plus – 24 Part Review
Amazon Fire Phone – 2 Part review
LG G3 review – 31 Part Review
HTC Desire Eye – 13 Part Review
HTC One M8 – 11 Part review
Acer S55 review – 6 Part Review
Honor Holly – 4 Part review
Honor 6 – 12 Part Review
Microsoft Lumia 535 review
Nokia Lumia 1520 – 6 Part review

Wearables/Virtual Reality Headsets/Fitness Trackers

Samsung Gear VR – Virtual Reality Headset – Review
FitBit Charge HR review
Acer Liquid Heap Smartband review
Samsung Gear S – 9 Part Review
LG G Watch R – review

Audio Reviews

Oppo PM-2 Headphones – First Impressions after 100 hours
V-Moda Crossfade M100 headphone review
Plantronics BackBeat Pro bluetooth headphones review
Fiio RC-HD1 Headphone cable review
Sennheiser HD518 Headphone review
Philips Fidelio M1BT Headphone review
AKG K845 Bluetooth Headphone review
Sony SBH80 Bluetooth headphones review
Sony XBA-H1 Headphone Review
Logitech UE Headphones – 3 part Master review
Audio Technica ATH-AD900x Headphone review

Oppo HA -2 Portable Amplifier and DAC review
Cayin C5 Portable Headphone amplifier review
Fiio E12 – master review
HiFiMeDIY Sabre Android USB DAC review
Little Dot MKIV Tube Headphone Amplifier review

The Internet of Things

Belkin WeMo Smart light Bulb starter kit review
Mipow Playbulb Rainbow review
Mipow Playbulb review

Editorials

Technology working in Harmony
HTC One M9 Camera vs Samsung Note 4
The Myths of High End Audio Blown Apart – Plus Photos of a £100,000 system

Oppo PM-2 Headphones – Something Special & Different

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I am currently burning in the Oppo PM-2 Headphones before writing my review. “Burning in” is the audio term for the number of hours required of playing music through the headphones before they sound awesome. Some headphones need 20 hours, some 100 hours, but the Oppo PM-2 need a minimum of 200 hours. The easiest way is to leave them plugged in playing music for a week and a half non stop.

The Oppo PM-2 Headphones are part of a range of 3 headphones by Oppo. They sell a more luxurious PM-1 and their new recently released PM-3. All of these headphones are different to your normal headphones as they feature “Planar Magnetic” technology.

Oppo uses their proprietary planar magnetic technology which uses a unique 7-layer diaphragm, double-sided spiralling coils, and an FEM-optimised magnet system.

Oppo explain this technology as follows –

“The OPPO PM-2 utilises a planar magnetic driver that sets it apart from the majority of headphones on the market. Sound is generated by a very thin and light diaphragm whose entire surface area is evenly driven. The diaphragm is driven in a symmetric pull-push manner, and the magnetic system and conductor patterns have been optimised for maximum sensitivity and consistency. This allows the diaphragm to generate very stable and linear piston-like vibrations, ensuring phase coherence and high resolution performance with minimal distortion.

Unique to OPPO planar magnetic headphones is the use of a double-sided diaphragm, which allows us to place twice as many conductors within the magnetic field and eliminate any passive return zones where the conductors do not work. This results in the use of 100% of our conductor length, which in turn results in greater efficiency. In addition, our flat conductor pattern eliminates inductance-related intermodulation distortion, common with dynamic headphones, and the OPPO PM-2’s purely resistive impedance means that sound quality is unaffected by a headphone amplifier’s output impedance.

The OPPO PM-2 combines high sensitivity with low weight, allowing it to be used freely with portable devices without requiring additional amplification. Its circumaural, open back design provides the best in sound quality and comfort, and the overall rugged construction ensures that the headphones can withstand mechanical and environmental stress.

These aspects of the OPPO PM-2’s design combine to provide a transparent, highly dynamic sound that exhibits well-balanced tonal qualities with very little distortion, resulting in a listening experience that is both free of fatigue and capable of communicating every nuance of your favorite music.”

Let’s be honest, who can wait 200 hours without having a brief audition. Well, I managed to hold off until 100 hours had passed. And the verdict, well you will just have to wait until next week, but suffice to say the sound reproduction is something really special.

For more information on these are the PM-1 and PM-2 – http://www.oppodigital.co.uk/ecommerce/product/PM-2-Planar-Magnetic-Headphones.aspx

Looking to buy a Phone, Smartwatch, Headphones, Smart Devices and more – read the review first – all the top devices reviewed

Tablets/Laptops/Chromebooks

Samsung Galaxy Tab S 10.5 Tablet review
Samsung Galaxy NotePro 12.2 – 9 Part Review
Sony Xperia Z Tablet – 12 Part Review
Nvidia Shield Tablet –  7 Part review
Acer V15 Nitro Windows 8.1 laptop review
Acer C720 Chromebook review

Amazon Devices

Amazon Fire Phone –  2 Part review

Apple Phones

Apple iPhone 6 Plus – 24 Part Review

BlackBerry Phones

BlackBerry Passport 10 Part Mammoth review

Android Phones

Yotaphone 2 –  4 Part review

Samsung Note Edge – 14 Part Review
Samsung Note 4 – 17 Part Review
Samsung Galaxy Alpha –  2 Part review
Samsung Galaxy K Zoom – 26 Part Review
Samsung Galaxy S5 – 17 Part Review
Samsung Note 3 – 16 Part review
Samsung Galaxy S4 Zoom – 18 Part Review
Samsung Note 2 – 8 Part review

LG G3 review – 31 Part Review
LG G Flex – 3 Part Review

HTC Desire Eye – 13 Part Review
HTC One M8 – 11 Part review
HTC One M7 – 20 Part Review

Acer S55 review – 6 Part Review

Honor Holly –  4 Part review
Honor 6 – 12 Part Review
Huawei Ascend P6 Review

Sony Xperia Z1 Compact review
Sony Z Ultra views and Camera Samples
Sony Xperia Z1 – 10 Part Review

Motorola Moto X – 4 Part review
Motorola Moto G – 8 Part review

Windows Phone

Nokia Lumia 1520 – 6 Part review
Nokia Lumia 820 – 5 Part review
Nokia Lumia 1020 – 10 Part review
Nokia Lumia 925 – 9 Part review
Nokia Lumia 620 – 7 Part review

Fitness, Watches and Wearables

FitBit Charge HR review

Acer Liquid Heap Smartband review

LG G Watch R – review
LG G Watch – 9 Part Review

Samsung Gear S – 9 Part Review
Samsung Gear Neo Impressions
Samsung Gear Fit review
Samsung Gear 5 Part review

Pebble Smartwatch review

Headphones, Speakers and Amps/DACS

V-Moda Crossfade M100 headphone review
Plantronics BackBeat Pro bluetooth headphones review
Fiio RC-HD1 Headphone cable review
Sennheiser HD518 Headphone review
Philips Fidelio M1BT Headphone review
AKG K845 Bluetooth Headphone review
Sony SBH80 Bluetooth headphones review
Sony XBA-H1 Headphone Review
Logitech UE Headphones – 3 part Master review
Audio Technica ATH-AD900x Headphone review

Oppo HA-2 Portable Amplifier and DAC review
Cayin C5 Portable Headphone amplifier review
Fiio E12 – master review
HiFiMeDIY Sabre Android USB DAC review
Little Dot MKIV Tube Headphone Amplifier review

App Enabled Accessories

Belkin WeMo Smart light Bulb starter kit review

Mipow Playbulb Rainbow review
Mipow Playbulb review

Imperihome Pro review
Netatmo Urban Weather station – 5 Part review

Camera Lenses

Shoulderpod S1 smartphone rig review
Sony QX10 and QX100 – 13 Part master review

If you are buying anything on Amazon, please use the link below. This will help support Gavin’s Gadgets with all the running costs and more and won’t be any different in cost. Thanks in advance.

GavGadgets@Amazon

V-Moda Crossfade M-100 Headphone Review

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Today, I am going to review the V-Moda Crossfade M100. These are an award-winning M-Class “modern audiophile” sound signature tuned by over 200 affectionados, with several patents. When these first arrived, I thought I had been sent the wrong pair of headphones due to the size of the box being far too small. But that is the marvel of these headphones. They fold so tightly into themselves that they can fit into that tiny football looking hard case.

Before I carry on lets check out the official specifications –

– Immersive 3D Soundstage: Evokes the experience of a live performance
– Clean Deep Bass: Feel and hear the precise vibrations of your music without bloated boom or a muddy mid-range
– Ultra Wide Clarity & Vivid Midrange: Hear lifelike vocals, crystal clear cymbals and crispy hi-hats
– 50mm Dual-Diaphragm Driver (Patent Pending): Inner and outer rings separate the bass from bleeding into the mids and highs
– Analog Noise Isolation – Naturally cut out the distractions of jet engines, crying babies and crowd noise
– No Batteries or Artificial Processing: Powerful, pure sound without the pollution of two extra digital-to-analog conversions of battery powered headphones
– Minimal sound leakage: Immersive sound for you without bothering others view details
– Consistent Driver Quality: Quality tested at 6 frequencies to maintain stricter consistency than the competition, often by an order of magnitude
– Virtually Indestructible STEELFLEX Headband
– Steel Frame and Interchangeable Aircraft Grade Metal Shields
– Exoskeleton Form-Fitting Case
– Tested Beyond Military-Level Quality MIL-STD-810G Test Standards
– Kevlar Reinforced Cable/Plug Bend: Cables and 45-degree plug can bend over 1 million times (100x industry standard)
– Headband Bend: Steelflex can bend 10+ times flat
– Environmental: High and low temperatures, humidity, salt spray and UV e
– Optional Custom Shield Kits: Laser engrave your logo or change your shield color
-Optional Cables & Ear Cushions: Choose from a variety of color and feature
– Cliqfold™ Hinge: Swiss-like hinge mechanism precisely folds the headphones into the impossibly small exoskeleton case (patent pending)
– Exoskeleton V-STRAP: Organize included cables and 1/4″ adapter via the V-STRAP system inside the exoskeleton case, with extra room left over for your USB Flash Drive & Fader earplugs
– Carabiner Clip: Safely secure your headphones on the outside of your bag for quick access
– Type: Over-Ear Circumaural
– Frequency Response: 5 – 30,000 Hz
– Sensitivity: 103 dB @ 1kHz 1mW
– Microphone Sensitivity: -42dB @ 1kHz
– Impedance: 32 Ω
– Weight: 280g
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When you use these for the first time, the first thing you notice is the level of bass attack, it’s so much richer than other headphones but totally in control. Firm bass. Fast too. The other frequencies are not ruined either. The dynamics and musicality of these cans is exceptional. If you go to Amazon.com there are over 700 5 star reviews out of 880 reviews written. Another 100 are 4 stars reviews. These headphones will do wonders for your music. They also sound great straight out of your smartphone but if you use an external amp you will explore the hidden depths of these headphones. These are a closed back design meaning your music is for your ears only. But it their ability to work well with mobile devices that stands out. I have reviewed the AKG K845 headphones which have a natural sound via Bluetooth and sound even better when used in wired mode, but only when used with an additional amplifier. When used this way the AKG’s sound better than the V-moda as they have a more natural wider musicality. The AKG’s sound close to open back headphones hence their advantage when powered properly.

Anyway shortly after wearing these for about 30 mins my ears started to really hurt. The discomfort was unbearable. The ear cups were not large enough for my ears and I have not got large ears. I did some research and found others had experienced the same discomfort as myself, but also realised V-Moda sold larger ear cups. I ordered these and these make a world of difference. Slight larger and deeper my ears are enclosed in comfort. In my mind these should be the standard size, but then others have used the smaller ear cushions with no issues whatsoever. The photos show the headphones fitted with the larger ear cushions.

In the football looking case was the headphones and 3 different types of cables. There are more cable options available to order for these headphones too. Some with music controls on, others with the ability to allow another person to connect their headphones in to the cable as well. But it is the ability to collapse down in to such a small size makes these ideal as a portable headphone.

In terms of musicality, once you have heard these, you will not want to look back. These fantastic to use with your smartphone and are easy to power so that in terms of overall quality and reproduction, you get great music across a vast selection of genres. Bass lines are strong but the mids and treble are just as prominent. In fact, the upper frequencies are handled really well. In terms of music genres, these rock out just as strongly as they do with a soft classical piece.

Highly recommended and portable.

Link to V-Moda Crossfade M100 at Amazon

Sennheiser HD518 Headphone Review

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Today, I am going to look at the Sennheiser HD518 headphones.

The official specifications of the Sennheiser HD518 are –

-Type – Full-Size Circumaural, ‘Around-the-ear’ Headphone
– Frequency Response – 14 – 26,000 Hz
– Acoustic Design – Open-Backed For Excellent, Natural And True-To-Life Sound Reproduction
– Impedance – 50 Ohms
– Cable length – 3 m OFC Single-Sided, Exchangeable
– Connector Plugs – 6.3 mm Plug, With 3.5 mm Adaptor
– Sound Pressure Level – 108 dB

Over the Christmas and Black Friday period in 2014, Amazon had these headphones reduced from their typical selling price of £120 to a more reasonable £49.99. These are Open Back headphones which means you can hear everything around you and everyone can hear your music too and clearly! But if you are listening in private in a quiet room these headphones are fantastic.

Comfort. When I put these headphones on I thought wow, these are so comfortable. They feel like slippers for your ears and over the last few months have become even softer around my ears. These are the most comfortable pair of headphones I have ever worn. I am able to wear these for hours and hours and being open back, their is no ear sound pressure, something you can get with a closed back design. These are even more comfortable than the Sennheiser HD600 that I owned previously.

Sound Quality. With any pair of headphones, I leave them initially connected and playing for around 100 hours to burn them in. The sound stage on these headphones is outstanding due to their open-back design. They have very crisp highs, naturally clear mids and very deep controlled bass. But it is their natural feeling of an expansive sound stage and musicality that makes these such a superb performer. Live concerts just feel like you are right there listening to the performance. Female vocals are wonderful. Personally I think these headphones are leaning towards a warmer sound.

Compatibility with smartphones. The HD518 can be used with a smartphone but will never sound their best as at 50ohms impedance they need additional amplification. Most smartphone headphone amps will simply run out of steam to power these properly.

My preference with these headphones are listening to jazz, blues and classical and any live recording. These headphones are not great for portability or listening in crowded noisy spaces but if you can get around all of that, find a private quiet space, you will not be disappointed.

Link to Sennheiser HD5xx series at Amazon

Fiio RC-HD1 Cable – Review

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The Fiio RC-HD1 features a special PCOCC-A high purity OCC copper wire construction,high purity wire creates excellent conductivity, four segment straight copper plated gold 2.5mm / 3.5mm connections and outstanding tension resistance. It is a replacement cable for the Sennheiser HD518, HD558 and HD598.

Specifications –

– Length: 120cm
– Sheath material: TPE
– Shielding layer: PCOCC-A
– Insulating layer: PFA
– Conductor: PCOCC-A
– Outermost diameter: 2.4mm×2 (Parallel structure)
– Plug: 2.5mm / 3.5mm

Not all cables are created equal. Whether you believe this cable is worth £30 is up to you to decide, but I have been extremely happy with it. The Sennheiser HD5xx range comes with a 3 metre cable terminated with a 6.3mm plug which does not fit any portable gear or smartphones. It does come with an adapter to convert the 6.3mm plug down to 3.5mm but then you have this huge component sticking out of your headphone socket, which also will create a lot of strain of the headphone jack.

The Fiio cable is a replacement speaker cable for the HD5xx range of headphones. For a start it is only 120cm long and terminated with a 3.5mm plug.

In addition it upgrades the quality of the sound experienced through the HD5xx headphones. In use I found my music to provide clearer treble and midrange. tighter bass and a wider sound stage. It is also a lot easier to use my HD518 headphones with a shorter cable length.

For those that haven’t heard of Fiio they make a number of budget audio components that offer huge bang for your bucks.

Link to Fiio RC-HD1 at Amazon

Plantronics BackBeat Pro Bluetooth Headphone Review

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First lets check out the specifications. It is worth reading these in detail as these headphones are smart –

– Wireless Range – Up to 100 meters/330 feet from phone or tablet with Class 1 Bluetooth
– Multi-Point – Simultaneously connect two Bluetooth devices (2H2S)
– In the box – BackBeat PRO headphones, 3.5mm audio cable (Apple), USB charge cable, travel sleeve
– Bluetooth Profiles – Bluetooth v4.0 + EDR – A2DP for audio streaming, AVRCP for music controls, Hands-free v1.6 for wideband, and Headset v1.2
– Battery Power – Up to 24 hours of listening time from rechargeable battery | Up to 21 days standby time | Up to 180 days in DeepSleep mode
– Battery Type- Rechargeable, non-replaceable lithium-ion
– Charge Time -Up to 3 hours
– Weight – 340 grams
– Noise-cancellation Controllable Active Noise Cancelling (ANC) plus Digital Signal Processing (DSP) and dual microphones
– Voice Alerts – Spoken alerts in 14 language options, which vary by region (US and UK English, Cantonese, Danish, EU-French, German, Italian, Japanese, Korean, Mandarin, Norwegian, Russian, EU-Spanish and Swedish)
– OpenMic™ feature lets you hear your surroundings
– Automatic music play/pause when headphones are put on/removed

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These are my reference bluetooth headphones for a number of reasons. First they sound freaking awesome with APT-X support too. These are bass monsters, deep sub level bass but surprisingly they don’t ruin the mid or trebles too much. . They are great fun to use and listen too and make most music entertaining to listen too. BUT they are not for audio purists. I believe it’s always good to have a fun pair of headphones. Despite their exaggerated bass, the still command speed, attack and an overall decent presentation.

They are very comfortable to wear and if you can manage 24 hours of non stop music then these are just the ticket. Since owning these I have updated the firmware and changed the language from US to UK English. When connected to your PC you also have the options to turn off some of the voice actions. When you place these over your ears, the female voice confirms when phone 1 and phone 2 is connected and the level of the battery. Plantronics have an app you can download that amongst some of its features also confirms how many hours are left in the headphones battery. Remember, 24 hours playback with only 3 hours to recharge. Switching between connected devices works effortlessly.

Then there is the auto off and on feature. Take the headphones off your head. The music is paused. Place them back on your head, and the music starts again.

From the headphones itself, you can take calls etc, play/pause music, skip forward or backwards and adjust the volume. The headphones also feature noise reduction to eliminate outside noise. This can be turned on or off. There is also a mic button on the headphones. If somebody starts talking to you, you will not be able to hear them. But pressing the mic button, pushes the sound to the rear and you can now hear properly and conduct a conversation. The headphones comes with a black soft cushion sleeve and a wired cable for times when the batteries run dry. But with 24 hours playback that’s unlikely to happen! Plus 3 hours to recharge them only.

Seriously Plantronics have thought of everything with these bluetooth headphones. So long as you don’t mind the extra bass then these are recommended. As I mentioned at the start, these are my reference bluetooth headphones. Cutting the chord has never been so much fun.

Link to Plantronics BackBeat Pro at Amazon

Headphones, DACs and Amplifiers – All My Reviews

Below are all the reviews I have written covering headphones, amps and DACs. I have owned many more headphones not reviewed including Sony MDR-1R, JVC HA-FXZ200, Audio Technica ATH-AD900x, Bose AE2i, Sennheiser HD558, Beyerdynamic DT880 600 ohm, Denon AH-C751s, Sony MDR-EX91, Sennheiser HD415, Fischer Audio FA-011, REO, Sennheiser HD600, Fischer Audio FA-003, Sennheiser PX-200 IIi , Brainwavz B2 and Sennheiser HD202ii, so if you would like to know more about these please ask in the comments.

Previous Amps owned and not reviewed include Sony PHA-1, Fiio E7/E9/E17/E12, Fiio E5, Fiio E11 and Musical Fidelity V-DAC/V-PSU so again if you would like to know more about these please ask a question using the comments section below.

Coming in less than 7 days Sennheiser HD518, V-Mode Crossfade M100 and Plantronics BackBeat Pro

Headphones, Speakers and Amps/DACS

Philips Fidelio M1BT Headphone review
AKG K845 Bluetooth Headphone review
Sony SBH80 Bluetooth headphones review
Sony XBA-H1 Headphone Review
Logitech UE Headphones – 3 part Master review
Audio Technica ATH-AD900x Headphone review

Cayin C5 Portable Headphone amplifier review
Fiio E12 – master review
HiFiMeDIY Sabre Android USB DAC review
Little Dot MKIV  Tube Headphone Amplifier review

If you are buying anything on Amazon, please use the link below. This will help support Gavin’s Gadgets with all the running costs and more and won’t be any different in cost. Thanks in advance.

GavGadgets@Amazon

Cayin C5 -Portable Headphone Amplifier – Review

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The Cayin C5 is a portable headphone amplifier that has a lovely sound signature and is capable powering many headphones. It is made from a brushed aluminium alloy. It has a battery level indicator. But what provides it sound is the use of dedicated high performance audio op amp OPA134 and LME49600. In addition Japanese original ALPS volume potentiometer is used too. The Cayin C5 is handy as it can be used as a mobile power source to charge other mobile devices. If you like more bass in your music it has a high and low end bass switch. It also has shielding to prevent interference affecting the music.

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Technical Parameters:

– Rated output power: 800mW + 800mW (32 ohm load) SNR: ≥101dB (A-weighted)
– Life time: about 12 hours (32ohm load)
– Frequency response: 20Hz-100kHz (+- 1dB)
– Sensitivity: ≤500mV (gain H) Charge limit voltage: 12.6V
– Charging time: about 4 hours (off state, the use of DC5V / 2A charger)
– Total Harmonic Distortion: ≤0.02% (1kHz)
– Lithium battery capacity: 1000mAh / 11.1V
– Size: 136x63x15mm Weight: about 185g

So in English what does all the above mean. This amplifier has nearly 1 Watt of power at 32 ohms driving your headphones. With that much power the volume can obviously go very high but it more about the control of musicality that this amp brings to your music. The amp creates a huge 3D sound stage, which lets the mids shine out. Bass is controlled with excellence depth and dynamics. The treble is fantastic too, never too bright but very concise. The Cayin C5 is also capable of driving IEMs through to full size headphones.

This is one musical beast of an amp and seriously good value for money at it price. It is available from Amazon via EA Audio. This is where I bought mine from and using EA Audio too.

Link to Cayin C5 at Amazon via EA Audio

HiFiMeDIY Sabre Android USB DAC – Review

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Today I am going to be reviewing the HiFiMEDIY Sabre Android USB DAC. This will form part of another 2 reviews, one covering the Cayin C5 portable headphone amp (live tomorrow) and another post blowing apart the myths on high end audio fidelity.

The HSAUD has DIY in its title for a reason. It has high end components inside, but housed in a cheap DIY plastic box thing to reduce the price down as low as possible. The Sabre ES9023 dac chip that is located inside this plastic box is found in more expensive DAC’s costing hundreds and even thousands of pounds.

Specifications –

-Sabre DAC Technology, Sabre ES9023 dac chip
– Connects directly to microUSB connector on Android phones
– Works with some phones only! USB OTG support required and Android 4.2+
– No external power needed. Dac draws minimal power (30mA)
– Output using a 3.5mm headphone jack

As android phone vary so much in terms of their internal specifications there is a warning about which android phones will work with this DAC. HiFiMe has tested it and confirmed it works with the following models include: Samsung Galaxy Note 2 running newest software update, Samsung Galaxy Mega running Android 4.2.2, Samsung galaxy S3 with newest software Samsung Galaxy S4 with Android 4.2.2 LG Optimus G Pro 4.1.2+ Possibly works with most Android phones running android 4.2.2 Does not seem to work with Cyanogenmod software. I have tested it with the Samsung Note 4, Honor 6 and Yotaphone. All work with this device using an app called USB Audio Player Pro.

So what is special about the DAC used. The Sabre ES9023 dac chip allows the sound to go straight out of the DAC chip and into your headphones or amplifier. It is not needed that the sound signal go through a capacitor to remove a DC voltage, there is no DC voltage to remove! This omits the need of a colouring cap which adds costs and reduces sound quality. – Jitter Eliminator! The ES9023 utilised patented HyperstreamTM architecture and Time Domain Jitter Eliminator. – 112db DNR USB (receiver) PCM2706: – Accepts up to 48Khz/16bit Output levels: Open 2.2Vrms 4.7Kohm 2.1Vrms 1.8Kohm 1.9Vrms 510ohm 1.5Vrms 330ohm 1.3Vrms 30ohm 1Vrms Note: Normally amplifier inputs are from 10K to 100K ohm. Normal headphones are from 32 ohm to 300ohm. Sound alien to you.

Don’t panic. This DAC is an upgrade to what your phone is using. It helps alot to have mp3 or similar at 320mp3 bitrate. The higher the bitrate the better and FLAC files help again. If you play mp3 or FLAC files straight from your android phone into the HiFiMeDIY DAC without using a proper app like USB Audio Player Pro, then there is no point even bothering to go down this route.

What is the difference using this method. You lose the convenience of just plugging your headphones into your phone and listening to anything via any app. You need the music stored on your phone and use a dedicated app. You gain huge improvements in everything to do with your music. It is like cobwebs are blown off the tracks. It really will make that much of a difference unless the actual recording is crap. Crap in and crap out.

The other beauty of this DAC is it can power many portable type headphones without the need of a portable headphone amplifier.

All in all I highly recommend this USB DAC.