OneOdio A70 Bluetooth OverEar Headset Review

The OneOdio Fusion A70 are headphones that can be used via Bluetooth or cable. In addition, a cable can play two audio sources simultaneously, one through the 3.5mm connection and the other through the 6.35mm connection. The headphones are also quite comfortable, and the sound quality is good for 40 dollar headphones.

Good build quality for this priceCups can be small for large ears
50 hours of battery life
Super comfortable

The OneOdio Fusion A70 are Bluetooth headphones that also work for DJs and musicians. They allow you to have two simultaneous sound inputs, one with a 3.5 mm cable and a 6.35 mm cable (both included). Let’s see them.

For starters, they come pretty well stocked with accessories. In the package we can find:

  • OneOdio A70 Headphones
  • Carrying case
  • Micro USB charging cable
  • 3.5mm to 3.5mm 1.5 meter cable
  • 2.8 meter 3.5mm to 6.35mm cable
  • Manual


OneOdio A70 Bluetooth OverEar Headset
ReleasedJanuary 13, 2019
Weight246 grams
Dimension6.7 x 5.6 x 4.1 inches
TypeWireless OverEar
ColorsBlack, Silver, Red, Gold
Driver40mm dynamic drivers
Foldable DesignYes
MicrophoneHands-free microphone, 3.5mm jack
Music ControlsYes
Frequency Response20Hz-20kHz
Sensitivity110 ± 3dB dB / mW
BluetoothBluetooth 5.0
Battery Type650 mAh Lithium Polymer
Battery LifeUp to 70 hours
Connector TypeUSB charging cable
CompatibilityWindows, Playstation, XBOX


The headphones are mainly made of plastic, although they do have metallic internals like the headband. Still, the plastics are pretty good, and the build quality is outstanding. Nothing creaks or makes noise when wearing them, and the adjustment mechanisms move well and feel robust.

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The headphones have a certain angle at the joints that makes them better adapt to the shape of the head. The fit is perfect, although visually, they can be a bit more cumbersome than other designs. For example, these OneOdio A70s are bulkier than typical Bose QC35 headphones.

As for connections, in the left cup, we have the 6.35 mm auxiliary audio input and the micro USB connector to charge the headphones. Of course, a USB-C connector is better option to use the mobile cable and not have to carry another extra cable if we leave home.

We have the 3.5 mm minijack connection in the right cup and three buttons: the power button and the volume button. The volume buttons also move the song forward or backward if we hold them down for a few seconds.

The A70s are available in four color combinations:

  • Completely black (the one I have)
  • Black with red accents
  • Black with gold accents
  • Silver with brown details


The headphones feature Bluetooth 5.0 for wireless connectivity. The connection is very stable; the range is excellent. You can go to the kitchen with them and continue listening to the computer in the room via Bluetooth, something that few headphones can achieve. The supported codecs are typical SBC and AAC.

As for latency, they hold up pretty well. In videos, the sound and image synchronized well. In video games, they are usable without any problem; if you concentrate a lot, you may notice a slight lag in fast games (FPS), but minimal does not bother.

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As we have already said, the headphones also have 3.5mm and 6.35mm connections as auxiliary inputs. Both can be used at the same time so we can listen to two sources at the same time, something that can be very useful for DJs or musicians.

In addition, if we use the headphones via Bluetooth, we can also use the 6.35 mm connection to output sound to other headphones. This comes in handy for travel. For example, from a computer, we can broadcast the movie’s sound to the A70 via Bluetooth and connect other headphones to the A70 via cable.

So two people with two headphones can listen to the movie in sync. Yes, this works, but due to the terminals of the connections, I do not have any headphones that work well at home.

The 2 cables, one with 3.5 mm terminations and one of 6.35 mm, but of those 3.5 mm terminations, two have a non-standard coupling that serves to block the connection in the A70, and that the cable does not come out.

Audio Quality

The OneOdio A70s mount 40mm dynamic drivers and have an impedance of 32Ω. And, although the cups cover the entire ear, its passive noise cancellation is inferior to other similar headphones.

The general EQ is relatively balanced in terms of sound, although the bass turned up, nothing excessive.

The focus of the headphones is on the bass; even so, they are not too exaggerated. Of course, in particular songs, they can get a bit messy with other frequencies. They also don’t sound thunderous anyway and hold up pretty well in all genres of music.

The low mids have a lot of punch too. Although the upper mids are somewhat weaker, and some voices may lack a bit of prominence. Still, the voices sound quite direct and natural. Instrument separation isn’t great, but they don’t tend to blur with complex melodies, either. Of course, they could have a little more clarity.

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The treble is somewhat worse. They don’t go too high and fail to help produce a more open sound. When they reach the frequency, they do not sound bad at all, but a little more brightness is missing. Overall, the A70s are relatively flat with a bit of punch in the lows, and the mids hold up well. 

The headphones have a single microphone that features cVc 8.0 technology to filter out background noise and provide clearer sound hands-free intelligently. The result is a decent headset in quiet environments, but if we have a lot of background noise, the result is mediocre.


The cup pads are pretty large, and the whole ear fits inside them. Of course, prominent people or people with generous ears may not fit in the whole.

The headphones are comfortable, and you can spend several hours with them without being disturbed. Of course, in very long sessions, more than 3 or 4 hours, the headband area starts to bother a bit. It is not a problem either because it is a minimal annoyance after many hours of use.


The A70s have an internal 650 mAh battery with which they achieve a range, according to the manufacturer, of 70 hours.

Of course, we can use the headphones without battery via cable, and the microphone will still work.


The OneOdio A70 headphones are comfortable, can be connected in many ways, and have excellent battery life. The sound quality is not the most impressive of the headphones. The truth is that you can’t ask for much more than the $40 they cost.

But, in addition, they have the characteristic, practically unique in this price range, of having two sound inputs via cable.

And the ability to output sound to other headphones seems very useful for travel; the downside is that it does not work well (connection compatibility) with the headphones I have at home.

In short, the OneOdio A70s has an excellent value for money, and since they are so comfortable. A perfect option in the price range of 40 dollars.

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