User Experience

Seen above is the right half of the 1MORE EVO installed on an artificial ear mold that is similar enough to my own average-sized ears. I used the pre-installed size M silicone ear tips for this photo, which is what I also used for the rest of my testing. The fit was fine for me since the shells are still smaller than the average ear concha. These being IEMs, the ear tips go into the ear canal, providing further support and the necessary seal to make the most of these earphones. Passive isolation is fairly decent, but I would recommend both 1MORE and you consider aftermarket ear tips, such as the SpinFit CP100+ or final Type-E tips. These weigh ~5.5 g each, so they are not physically fatiguing. IPX4 spill resistance also makes these conducive for use in the gym or outdoors.

Battery life is a key metric for TWS earphones, and these promise 8 hours of use when fully charged, which is a best-case scenario at 50% volume and in AAC mode with ANC off. With LDAC and 70% volume, I got closer to 6.5–7 hours in the couple of weeks of testing. This drops to ~4–4.5 hours with ANC, which is a shame. Even 1MORE's best case rating is 5.5 hours with ANC, so you are certainly paying for the smaller battery inside these earphones. With the case, total battery life in my typical usage scenario was ~25 hours, so the case was indeed providing more than the expected three charge cycles. Still, knowing this would be closer to 15 hours with ANC, it is ultimately going to be a negative in my books despite the fast charging. No wonder 1MORE makes you jump through a few hoops for anything other than AAC connectivity, which is a shame since LDAC can make a tangible difference with streaming lossless files.

Audio Performance

Audio Hardware and Microphones

The 1MORE EVO happens to be my first multi-driver TWS experience, and it's a hybrid driver configuration to boot! There is a 10 mm dynamic driver with a diamond-like carbon diaphragm that aims to be stiffer and more responsive, and this driver handles the low and mid frequencies. The treble frequencies are handled by a new balanced armature driver placed closer to the nozzle, and now the shorter battery life makes more sense since the battery has to power two drivers in addition to all the tech inside. Indeed, 1MORE claims a longer frequency response of up to 40 kHz, and the earphones are still rated for an average impedance of 32 Ω. There is likely a Qualcomm chipset inside for both Bluetooth connectivity and the integrated DAC/amp, at least based on the entire feature set. Additionally, each side has three microphones 1MORE tries to boast about, but this is really the basic minimum for ANC TWS sets. The one at the bottom and directed towards your mouth picks up your voice for communication, with the other two tackling ANC itself. But 1MORE does say the EVO provides industry-leading noise cancellation of up to 42 dB as independently verified at an established laboratory, so that remains to be seen.

Once again, 1MORE has a pretty complete technological feature set. The mobile app works fairly well and has all the options I would like, as well as some I never thought of needing or using. The SoundID integration was nice to see, and there are several pre-programmed touch controls on the earphones. Some of these can be customized using the app, but the different ANC modes are only accesible via the app. I could not access them since the operating modes go through Off, ANC, and Transparency (ambient/hear-through). In addition, there is no easy way to tell which mode you are switching to since the only feedback is chime sounds rather than a voice recording as with most. Of course, it becomes fairly obvious once you keep earphones in. The smart playback feature utilizing the IR sensor can also be handy if you want the music or audio book paused when removing these, and playback can be set to resume when the earphones are re-inserted. I also wish the microphones were better at picking up my voice for calls, with 1MORE using two microphones in total and Qualcomm's clear voice capture (cVc) noise echo cancellation and noise suppression doing a decent job in a pinch, albeit certainly not as good as one as some other recently tested TWS earphones.

Frequency Measurement and Listening

I will mention that I have a general preference for a warm-neutral signature emphasizing a slightly elevated bass and smooth treble range with detailed mids and good tonal separation. I also generally prefer instrumental music over vocals, with favored genres including jazz and classical music.


Our current testing methodology begins with a calibrated IEC711 audio coupler/artificial ear the earphones can feed into to where there is decent isolation similar to real ears. The audio coupler feeds into a USB sound card, which in turn goes to a laptop that has ARTA and REW running and these TWS earphones connected to the laptop through Bluetooth. I begin with an impulse measurement to test for signal fidelity, calibrate the sound card and channel output, account for floor noise, and finally test the frequency response of each channel separately. Octave smoothing is at the 1/12th setting, which nets a good balance of detail and noise not being identified as useful data. Also, the default tuning was used for testing, and no app-based settings were chosen unless specifically mentioned. Each sample of interest is tested thrice with separate mounts to account for any fit issues, and an average is taken of the three individual measurements for statistical accuracy. I am also using the pinna mold fitted to the audio coupler for a separate test to compare how these fare when installed in an ear and cheek geometry and not just the audio coupler by itself. The raw data is then exported from REW and plotted in OriginPro for an easier comparison.


The IEC711 is such that you can't really compare these results with most other test setups, just within our own library of measurements. The raw dB numbers are also quite contingent on the set volume, gain levels, and sensitivity of the system. What is more useful information is how the left and right channels work across the rated frequency response in the 1MORE EVO, or the useful part of it. The left earbud was separately tested from the right one, and colored differently for contrast. I did my best to ensure an identical fit for both inside the IEC711 orifice, so note how the two channels measure nearly the same across the entire frequency response. These are averaged for each channel across multiple fits, which still makes for good channel matching. The small deviations are not really felt in person, and we see more of the same with the artificial pinna in place, with the expected resonance shift. This second test is also a good indicator of how good the fit was in an ear mold compared to the ideal case of the coupler orifice itself. Keep in mind that with TWS earphones, the fit, connectivity, and signal strength from the source are quite important.


As before, I will refer you to my frequency response measurement database VSG.squig.link to easily compare my measurements to my preferred target for a better idea of what I personally like, as well as other target curves at the bottom, inspect different segments, normalize based on SPL or at a chosen frequency, and easily compare other devices to each other. 1MORE talks about delivering "pure studio sound with incredible clarity, punchy bass, crispy vocals, unrivaled details, and a wide soundstage which are excellent even at low volumes." The tuning is done in collaboration with Luca Bignardi, a 4-time Grammy award-winning sound engineer. These IEMs also use 1MORE's proprietary QuietMax ANC, and these are all lofty marketing goals to meet.

Tell you what though, between the EVO, ColorBuds 2, and my ongoing experiences with the ComfoBuds Mini, 1MORE should perhaps contract someone more used to wireless earphones than a sound engineer who is likely not using these for anything other than getting a paycheck. All three stock tuning profiles have been divisive at best, although the EVO's tonality might be the least offensive of the lot. In fact, I can see a world where the mainstream audience might even like the warmer tuning, but calling it a pure studio sound with crispy vocals is a stretch. This is a W-shaped tuning, but predominantly because of the unexpected bump in the mids that emphasizes vocals and some instruments at the expense of others. The dynamic driver is doing its best in the lower frequencies, with a ~7 dB rise in bass and good extension all the way down. These also get quite loud at maximum volume, which can be misconstrued to be dynamic and engaging. In some ways, it still is, but contrast between trailing and leading edges for bass guitars and drums is lacking. Once you keep in mind this is a TWS set, things do feel much better by comparison.

The transition from the bass into the mids is smooth, and deeper male voices feel weirdly subdued because of the tuning. I will say you should certainly try SoundID, and make sure you have the profile that best matches your listening preferences. What the EVO gets right is having scalable drivers that behave well with EQ, and SoundID almost single-handedly changed my impressions of the set. So don't worry too much about that tuning just yet, which does match the factory response curve provided on the product manual, as EQ is once again king. Vocals are still forward-facing, especially with a good fit in the ear canals, but there is no sudden change in some vocals sounding louder and closer to your ears than others. This also helps with imaging as there is no haze with instruments and channel separation, making these conducive for orchestral music and binaural recordings. I would not say the soundstage is particularly wide as I have experienced a larger sense of space with other TWS sets—the ColorBuds2 itself isn't that much different in this regard.

SoundID is also handy in the upper mids, where 1MORE's sound engineers seemingly forgot how pinna gain works, with an SPL increase in the 1–3 kHz region that rivals the high point in the mids of the stock tuning. You may want to consider a third-party EQ program, such as Poweramp EQ or Wavelet, to further get things to your liking, but I don't expect the average TWS user to do so. However, if you do get the tuning to your preferences, the drivers will make for a highly impressive listening experience various TWS constraints considered. There is no sibilance or fatigue as you get to the treble, and instrument separation carries over as the balanced armature driver kicks in. You will mostly experience fundamental tones, though. There isn't much air to appreciate slowly decaying string instrument resonances. So classical music aficionados will want to consider this for some sets more than others, but this will be a set more people will use for general media consumption—movies, podcasts, and radio—than classical music anyway. The ANC implementation is very impressive, too—the tuning does not change much despite a significant amount of noise cancellation even when on the go on a windy day. There is still a sense of lower pressure in the ears, but it is not uncomfortable by any means. Transparency mode works as expected too, with the microphones boosting ambient sounds when you need to be aware of your surroundings in a jiffy and could not be bothered to remove the earphones.


Seen above are the frequency response measurements for three other ANC TWS sets: the 1MORE ColorBuds 2 as an obvious comparison, Audio-Technica ATH-ANC300TW, and Kinera YH802 that are more closely matched in pricing. I suppose any TWS set from Audio-Technica is going to be a cheat code for making the others look better, and the Kinera YH802 has close to decent tuning, but can be fatiguing in the upper mids. Both of these also have worse touch controls and ANC, so the 1MORE EVO bests them easily in those regards. The ColorBuds 2 is weird in that a mild ANC is always on, but notice how it manages to get some pinna gain in. None of the others have LDAC, and SoundID is a good distinguishing feature for the EVO too—remember that it didn't work well on the ColorBuds 2. So while the 1MORE EVO has worse battery life, it is actually the best overall set here.