OneOdio a70 Bluetooth Over-Ear Headphones Review: Wonderful Comfort And Captivating Bass!

OneOdio A70 Bluetooth Over Ear Headphones, Studio Headphones

OneOdio A70 Bluetooth Over Ear Headphones, Studio Headphones







What We Dig

  • Comfortable Fit
  • Crisp Highs, Deep Bass
  • Clear Phone Calls

What To Think About

  • May Be Too Small For Larger Heads
  • Mids Are Congested
  • Outdated Micro USB Charging Port


The OneOdio a70 is a cheap and comfortable pair of wireless/wired headphones with crisp highs, deep bass, and good battery life for the money. They also look pretty good.

Disclaimer: The OneOdio a70 was sent to us by OneOdio in exchange for an honest review. Thanks to them for the opportunity!


Play Time (Battery): 72 hour

Speaker: 40mm

Impedance: 32 Ohms

Sensitivity: 110dB +- 3dB

Transmission Frequency: 2402MHz-2480MHz

Frequency Response: 20Hz-20KHz

Rating Power: 30mW

Plug Type: 3.5mm/6.35mm stereo

Cable Length: 1.5m-2.8m coiled cable


The $50 OneOdio A70 Bluetooth Over-Ear Headphones is the second headphone I’m reviewing from OneOdio, a company that markets value-priced headphones to the DJ and home audio markets. The first one I checked out, the Pro-50 Studio, was comfortable and had decent sound for the price. So when they asked me to look at one of their wireless models, I was intrigued by the opportunity to see how their Bluetooth headphones would match up.

Upon taking the A70 out of the box, I was somewhat impressed at the assortment of stuff you get for $50. The headphones come folded nicely inside a vinyl drawstring carrying pouch, with two aux cables (one short and one long), a USB charging cable, and a user guide.

The shorter cable is of the 3.5mm to 3.5mm variety for mobile use, and the longer one is a 3.5mm to 1/4’ coiled cable, which does double duty as a 1/4” cord and a 3.5mm cord, depending on what side of the headphone you use it on.

By the way, this is probably a good time to mention that the A70 has two jacks for wired use, a 3.5mm on one side and a 1/4” jack on the other. That means you can flip the coiled cable around and use it on either jack, letting you plug the headphones into equipment with either size jack. That means you don’t need an adapter. That’s a pretty cool feature, especially since I’m constantly losing them.

As far as design goes, the A70 looks pretty slick. It reminds me of the ever-popular Audio-Technica ATH-M50, but it doesn’t feel quite as durable in hand. It doesn’t look flimsy by any stretch, but it just feels a lot lighter due to the mostly plastic construction, and the joints are a lot looser. There is some metal reinforcing the sliders, but that’s about it.

That said, the ATH-M50 cost about three times what the a70 costs (four times for the wireless model), and Audio-Technica does have cheaper headphones that match up better build quality-wise.

Regardless, I think they would hold up to everyday use, but I would be wary just tossing them in a bag. However, if you put them in your bag, the good thing is that they fold up nicely and don’t take up a lot of room when stored in their pouch.

The folding earcups will also serve you well if you decide to use them for DJaying, as you can fold them up to hear what’s going on around you.

As far as wearing comfort goes, I found the a70 to be very comfortable with a light yet firm clamp and soft protein leather earpads. The headband is also wrapped in a soft protein leather-wrapped padding.

Those with larger heads may have an issue with fit since the slider arms are little on the short side. When I put the a70 on, the cups just reached my ears, so keep that in mind if you have a big head as I do.

Operation-wise, I found the a70 to work quite well. The volume and power/playback buttons were placed conveniently on the bottom of the right earcup, and when I turned the headphone on, it quickly went into Bluetooth pairing mode.

Once I got my phone into pairing mode, the a70 was quickly discovered and paired in a few seconds. Unfortunately, the only BT audio codec available is default SBC, which is a little bit of a letdown. I usually like to see at least one higher bitrate option like AAC.

Play/Pause was simple to initiate with a quick press on the center control button, and a long press on the volume buttons would jump between tracks.

As far as phone calls were concerned, the a70 handled them well. When taking a call, I could hear the person on the other end clearly, and they were able to hear me clearly as well.

What We Like

– Comes with a nice drawstring carrying pouch

– Can Daisy-Chain a second pair of headphones for both wired and wireless signal

– Foldable for easy transport

– Two cables and two different sized aux ports (3.5mm and 1/4”) can plug into both sizes of headphone jack without an adapter.

– Comfortable fit with protein leather-covered memory foam pads and headband

– Twist-lock connection for 3.5mm Aux Cord cable

– Detailed Highs and Rich Bass for the price point

– Phone calls come through loud and clear

– Good battery life

What To Think About

– May be too small for larger heads

– Still uses an outdated Micro USB charging port

– Mids are recessed and a little thick

– No BT audio codecs besides SBC

Listening To The OneOdio a70 Bluetooth Over-Ear Headphones

When I found out the a70 only had the SBC audio codec for Bluetooth, I thought the sound would be something of a mess, but when I played some test tracks, I was surprised at how enjoyable it was for the price.

I found the Tonal Balance surprisingly good, with the Treble and Bass tastefully elevated for an exciting listening experience. With most budget headphones, the bass is extended to ridiculous levels turning the headphones into bass cannons, but not so with the a70.

Here the bass was elevated, but just enough to add some fun to the sound, which I liked. They also boosted the Treble just a bit to add some sparkle and detail, which was nice.

However, the mids are where I was let down, as they were pretty thick and recessed. Also, when I listened to vocal tracks, the singer most often sounded a little congested, which put me off a little. That said, vocals were still intelligible, and basically, the higher a singer’s voice, the clearer it was.

As far as instrumentals were concerned, strings were pretty rich, as were the bass instruments. Unfortunately, drums and other midrange-centric instruments were a little washed out, which took away from the depth of the sound overall.

For me, the tuning acquitted itself well with Electronica music, as the deep, relatively controlled bass and somewhat detailed highs made it sound engaging.

For example, when listening to “Agua” from Bomba Estereo, I liked the punchiness of the bass that drove the rhythm and the airiness of the highs. It made the song sound full and expansive, which was nice.

When I tried the wired connection, the midrange opened up a little and was less congested, but the bass was also more forward, which became a little too much for me. However, those who like a lot of bass may appreciate this.

The Wrap Up

Listen, at the end of the day, the a70 is not an audiophile headphone, and you will not get the resolution and soundstage you would expect from that type of product. These are not headphones for critical listening. What you will get is a fun-sounding headphone that’s comfortable to wear, easy to use, and looks pretty darn good. If you need a cheap pair of Bluetooth headphones with deep bass, then the a70 is worth looking at.

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