When comparing AKG K391 NC vs Zagg iFrogz inTone Wireless, the Slant community recommends Zagg iFrogz inTone Wireless for most people. In the question“What are the best headphones?” Zagg iFrogz inTone Wireless is ranked 60th while AKG K391 NC is ranked 61st. The most important reason people chose Zagg iFrogz inTone Wireless is:
You get a decent playback time of 5 hours from the InTone Wireless, and should be more than enough for your short runs.
Specs
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Pros
Pro Good accessory bundle
The accessories included are all very useful. You get two 3.5mm headphone cables, a USB charging cable, silicone ear tips, a travel pouch and an airplane adapter.
Pro The headphone cable can be detached from the control module
You can easily replace the 3.5mm cable should it get damaged. You can detach the 3.5mm cable from the control module which is very convenient. Other noise cancelling modules have fixed cables, so you’ll have to replace the headphones should the cable get damaged.
Pro Integrated microphone
You can take calls with these headphones on. A microphone is integrated into the remote which makes answering calls fast and convenient.
Pro Decent active noise cancelling
A good amount of noise will be blocked from mixing in with your music. Loud, low-pitched sounds may still be clearly heard though
Pro Compact noise cancelling module
You aren’t likely to have issues using these on the go. Most active noise cancelling in-ear headphones have large control modules, while the K391NC has a fairly compact and light module. You can easily use these headphones while walking and comfortably enjoy active noise cancelling with your music.
Pro Fairly detailed and rich sound
The highs are quite detailed, yet do not get harsh. The mids are slightly forward, so vocals and instruments can easily be heard. The bass is not very powerful but is tight, so you’ll get decent punch from your music.
Pro Okay battery-life
You get a decent playback time of 5 hours from the InTone Wireless, and should be more than enough for your short runs.
Pro Magnetic in-line remote
You can easily control your music using the in-line remote. You can pause/play tracks, adjust volume as well as go to next or previous track. The in-line remote also has magnets, allowing you to mount the ear pieces to the remote to keep them in-place.
Pro Splash-resistant
These earphones won’t get damaged when splashed with liquid. These have an IPx2 rating, which makes them resistant to small splashes of liquid or sweat. Getting these drenched or submerging them may still cause damage though.
Pro Decent sound quality
The InTone Wireless delivers decent detail and okay mids. Vocals have good volume from these earphones, while you get okay levels of airiness and clarity from the treble and does not get harsh in any way. The bass is lacking though. You don’t get a lot of oomph from low-bass notes, so these are not the best earphones for bass lovers. Performance should be acceptable for general music use though.
Cons
Con Limited inline controls
The inline remote only allows you to play, pause, and skip tracks. You can’t control volume levels though.
Con May be too bass-light for your taste
If you love punchy bass, then these earphones may not be the ones for you. Bass reproduction is fairly week and you probably won’t get a satisfying oomph from bass hits.
Con Bluetooth only
These earphones do not have wired connectivity, so you'll need to charge them once the battery is out before they can be used.
Con They fall off the ears easily
The earpieces do not fit well inside the ears. Also, there are no rubber or foam coverings on the earpieces; just bare plastic. When you sweat, the earpieces are more likely to fall off.
