Disclaimer: This product is a review unit sent as part of a review tour. I want to thank In-Earz and BulldogXTRM for helping to setup the tour and allowing me to be a part of it. The review unit will be sent to the next participant and is not given as a free product. The thoughts and impressions provided below are my own.
About Me: I am an iem lover who enjoys testing and listening to great sounding iem's. I would describe myself as a basshead audiophile (if there can be such a thing). Lately, I have been listening to a lot of EDM and so my impressions of the Zens will be based on my listening to that genre through my iPhone X. RIP to my ibasso DX200.
About the Company: InEarz is a company that has been in the game since at least 2003 and are based in Florida, USA. They provide quality audio products in custom and universal form for musicians and audiophiles alike. Recently they have partnered with Stephen Ambrose of Asius and Adel technologies fame. As a result we have the formidable Zen 2 and Zen 4 in-ear monitors.
About the Product: The Zen 2 is a dual driver balanced armature earphone featuring Adel technology. Features and tech specs included below:
Features
Accessories: Both the Zen 2 and Zen 4 come in a nice small/medium box closed with a magnetic flap. Inside you are greeted with the InEarz Audio logo as well as the earphones themselves. Included is a canvas carrying case with a carabiner as well as a very nice round aluminum water-resistant (proof?) storage case. Having two storage options is a definite win in my book. Also included are sets of silicone and foam tips in the S, M, L variety. I found the tips to be of good quality and had no issue establishing a solid consistent seal even with my small ear canals. While more tips are always welcome I feel most will be able to find a good seal with the supplied tips. Also included are a leather cord-wrap system and cleaning tool. I would say accessories are on par for what you would expect at this price point.
Build Quality & Comfort: The build quality of both the Zen 2 and Zen 4 are identical. Both are exceptionally built and comfort is great for long-term listening. As someone with small ears I am always concerned about comfort. I am happy to report that there are no sharp edges or bulky profile here. The Zens have a slim profile and excellent comfort. The cable itself seems to be microphonic free and looks to be a typical ciem twisted cable. The cable is solid with a standard 2-pin connector. If you are a cable believer, the Zens can benefit from a cable upgrade but is by no means necessary. With the help of the included Adel module listener fatigue was non-existent. No complaints here. Solid all around.
Sound: Coming to the most important part of the review we have the sound. I spent my week and a half with my Zen 2 comparing it closely to the Zen 4 and Noble Sage as well as harkening back to my time with the Brainwavz B2, Noble Bell, and the Campfire Audio Comet. The Sage shares a similar price point to the Zen-4 at 599 usd and the Bell and the Comet come in at a similar price point to the Zen 2. After extensive comparisons between them all there are a few conclusions I have drawn.
Of the iems mentioned not one of them put a smile on my face the way the Zen 2 has done. I mentioned above that I am a basshead at my core. Yet my first love as an audiophile came with the arrival of my Brainwavz B2 way back in 2011-2012. The B2 introduced me to a level of clarity in my music that I am still chasing after today. I believe that the Zen 2 has provided a sound that I would describe as an upgraded B2. The Brainwavz were great but were nothing to write home about in regards to the bass. I also found that the mids were quite recessed if memory serves me. I feel that the Zen 2 give me that insane clarity I got with the B2 but without the super recessed mids and bass. Bass is not strong but it is present when called upon. Never did I feel like the bass was missing.
The clarity of the Zen 2 is unrivaled by the majority of gear I have tried and that includes gear topping 1,000 usd. Some of that no doubt comes from the fact that the Zen 2 leans towards the brighter end of the spectrum. Treble is well extended with significant amounts of sparkle and sibilance was only present when I listened to the occasional poorly produced track. Whereas I would occasionally find my Noble Bell or Campfire Audio Comet on the boring side the Zen 2 never let me off the edge of my seat. There is an energy to the Zen 2 that can be exciting. If you are a metal head who is not treble sensitive I could see the Zen 2 being very good for that genre as well as progressive rock. Instrument separation is another aspect where I feel that the Zen 2 truly shined. Listening to some of my more familiar and technical tracks it was good to catch some details that I had not noticed before. The soundstage on the Zen 2 was definitely above average and even though I would describe it as a bright and energetic earphone there was no ear fatigue for me (thanks Adel technology!)
Compared to the Noble Sage which shares its price point with Zen 2’s more expensive brother the Zen 4. The Sage is much warmer than the Zen 2 and produces a much thicker and fuller sound. Switching between the two quickly results in the Sage sounding a little muddy and bass heavy and the Zen 2 sounding thin and almost shrill. I read somewhere in the forums that source can be a factor here and I would second that. The Zen 2 would not play nice with a bright source. At this price it is often a matter of sound signature preference when comparing the two. If you are looking for a warmer earphone with a stronger bass presence I would go with the Noble Sage. If looking for a more clarity definitely consider the Zen 2 which is a solid option at this price point and good for most genres.
Compared to the Zen 4 the Zen 2 is once again the more neutral of the two earphones. Perceived clarity is most definitely greater on the Zen 2 but that could easily be due to its increased brightness. If the Zen 4 is neutral leaning towards warm I would describe the Zen 2 as bright leaning towards neutral.
Final Thoughts:
Overall, I would describe the Zen 2 as a bright earphone that leans slightly towards neutral. It is a solid all-rounder that will fit with almost any genre and competes very well with products like the Noble Sage in its price range and its clarity exceeds it. Great job In-Earz Audio!
About Me: I am an iem lover who enjoys testing and listening to great sounding iem's. I would describe myself as a basshead audiophile (if there can be such a thing). Lately, I have been listening to a lot of EDM and so my impressions of the Zens will be based on my listening to that genre through my iPhone X. RIP to my ibasso DX200.
About the Company: InEarz is a company that has been in the game since at least 2003 and are based in Florida, USA. They provide quality audio products in custom and universal form for musicians and audiophiles alike. Recently they have partnered with Stephen Ambrose of Asius and Adel technologies fame. As a result we have the formidable Zen 2 and Zen 4 in-ear monitors.
About the Product: The Zen 2 is a dual driver balanced armature earphone featuring Adel technology. Features and tech specs included below:
Features
- ADEL™ Technology
- 1 Low/Mid, 1 High Balanced Armatures
- Single Bore Design
- Impedance: 60 Ohm @ 1kHz
- Noise Isolation: -26dB (+/- 2dB)
- Input connecter: 1/8″ (3.5mm)Stereo Jack
- 3D printed hypoallergenic acrylic shells



Accessories: Both the Zen 2 and Zen 4 come in a nice small/medium box closed with a magnetic flap. Inside you are greeted with the InEarz Audio logo as well as the earphones themselves. Included is a canvas carrying case with a carabiner as well as a very nice round aluminum water-resistant (proof?) storage case. Having two storage options is a definite win in my book. Also included are sets of silicone and foam tips in the S, M, L variety. I found the tips to be of good quality and had no issue establishing a solid consistent seal even with my small ear canals. While more tips are always welcome I feel most will be able to find a good seal with the supplied tips. Also included are a leather cord-wrap system and cleaning tool. I would say accessories are on par for what you would expect at this price point.



Build Quality & Comfort: The build quality of both the Zen 2 and Zen 4 are identical. Both are exceptionally built and comfort is great for long-term listening. As someone with small ears I am always concerned about comfort. I am happy to report that there are no sharp edges or bulky profile here. The Zens have a slim profile and excellent comfort. The cable itself seems to be microphonic free and looks to be a typical ciem twisted cable. The cable is solid with a standard 2-pin connector. If you are a cable believer, the Zens can benefit from a cable upgrade but is by no means necessary. With the help of the included Adel module listener fatigue was non-existent. No complaints here. Solid all around.
Sound: Coming to the most important part of the review we have the sound. I spent my week and a half with my Zen 2 comparing it closely to the Zen 4 and Noble Sage as well as harkening back to my time with the Brainwavz B2, Noble Bell, and the Campfire Audio Comet. The Sage shares a similar price point to the Zen-4 at 599 usd and the Bell and the Comet come in at a similar price point to the Zen 2. After extensive comparisons between them all there are a few conclusions I have drawn.
Of the iems mentioned not one of them put a smile on my face the way the Zen 2 has done. I mentioned above that I am a basshead at my core. Yet my first love as an audiophile came with the arrival of my Brainwavz B2 way back in 2011-2012. The B2 introduced me to a level of clarity in my music that I am still chasing after today. I believe that the Zen 2 has provided a sound that I would describe as an upgraded B2. The Brainwavz were great but were nothing to write home about in regards to the bass. I also found that the mids were quite recessed if memory serves me. I feel that the Zen 2 give me that insane clarity I got with the B2 but without the super recessed mids and bass. Bass is not strong but it is present when called upon. Never did I feel like the bass was missing.
The clarity of the Zen 2 is unrivaled by the majority of gear I have tried and that includes gear topping 1,000 usd. Some of that no doubt comes from the fact that the Zen 2 leans towards the brighter end of the spectrum. Treble is well extended with significant amounts of sparkle and sibilance was only present when I listened to the occasional poorly produced track. Whereas I would occasionally find my Noble Bell or Campfire Audio Comet on the boring side the Zen 2 never let me off the edge of my seat. There is an energy to the Zen 2 that can be exciting. If you are a metal head who is not treble sensitive I could see the Zen 2 being very good for that genre as well as progressive rock. Instrument separation is another aspect where I feel that the Zen 2 truly shined. Listening to some of my more familiar and technical tracks it was good to catch some details that I had not noticed before. The soundstage on the Zen 2 was definitely above average and even though I would describe it as a bright and energetic earphone there was no ear fatigue for me (thanks Adel technology!)
Compared to the Noble Sage which shares its price point with Zen 2’s more expensive brother the Zen 4. The Sage is much warmer than the Zen 2 and produces a much thicker and fuller sound. Switching between the two quickly results in the Sage sounding a little muddy and bass heavy and the Zen 2 sounding thin and almost shrill. I read somewhere in the forums that source can be a factor here and I would second that. The Zen 2 would not play nice with a bright source. At this price it is often a matter of sound signature preference when comparing the two. If you are looking for a warmer earphone with a stronger bass presence I would go with the Noble Sage. If looking for a more clarity definitely consider the Zen 2 which is a solid option at this price point and good for most genres.
Compared to the Zen 4 the Zen 2 is once again the more neutral of the two earphones. Perceived clarity is most definitely greater on the Zen 2 but that could easily be due to its increased brightness. If the Zen 4 is neutral leaning towards warm I would describe the Zen 2 as bright leaning towards neutral.
Final Thoughts:
Overall, I would describe the Zen 2 as a bright earphone that leans slightly towards neutral. It is a solid all-rounder that will fit with almost any genre and competes very well with products like the Noble Sage in its price range and its clarity exceeds it. Great job In-Earz Audio!