OneOdio A70 Review – Easy Plug
OneOdio is a Hong Kong based manufacturer of very attractively priced headphones and earphones who sent me a sample of their A70 Bluetooth & Wired closedback overears for my review. They are currently on offer at $ 39.95.
In this Article
At-a-glance Card
| PROs | CONs |
| Multiple connectivity options and accessories | Very slow bass transients |
| Very good battery life | Limited resolving capabilities |
| Comfortable | Limited technicalities |
| Good isolation | Get a bit too warm on prolonged auditions |
| Inexpensive | |
| Viable entry-level “bass-head” presentation |
Connectivity
A70 offer a an extensive array of connectivity options that make it easy to employ them in so many different scenarios.
Starting with wired connectivity, there’s a 6.35mm connector on the left shell, and another, 3.5mm connector on the right one. In the box two cables are supplied, a 6.35-3.5mm 2.8m “coiled” cable, and a 3.5-3.5mm 1.5m “straight” one. All of this is exclusively single ended, by the way.
You can use the coiled cable “they way you like”, depending on your source HP port: if your source has a 3.5mm port, you’ll plug the 3.5mm end on there, and the 6.35mm end onto A70’s left shell. Alternatively, if you want to connect to your desktop amp – typically featuring a 6.35mm port – you’ll simply flip the cable around, plug its 6.35mm terminal onto the amp, and the 3.5mm terminal onto A70’s right shell this time. Either way, same result, same operation.
If you’re walking around, chances are the 2.8m cable is too long. So you can pull the 3.5-3.5 1.5m straight one and use that to plug A70 onto your DAP.
Oh by the way, the 3.5mm connector on the right A70 shell has a twist-lock mechanism. Nice feature, especially in a mobile scenario.
Bluetooth connectivity is very straightforward: A70 goes on pairing mode when you switch it on. Go look for it on the phone or dap, choose it, and you’re done. Warning: plugging the 6.35mm cable on disables bluetooth (logically).
And lastly: should you happen to own two A70s you may configure them as a “tandem”, and share musing with a friend: pair either via bluetooth, then run the long cable plugging the 6.35 end on one A70 and the 3.5mm end on the other. Done!
Battery
The A70 comes with a 950mAh battery offering up to 50h playtime. Of course the effective autonomy may vary a bit depending on condition, volume etc, but that’s not soo important I think, as pretty much any audio-dedicated mobile source will run out of juice much sooner 🙂
It will take 2 – 3 hours to recharge the internal battery. A USB cable is provided in the box. No charger though.
Build and comfort
The entire A70 structure is made of ABS and appears reasonably solid. The headband has an internal sheet metal reinforcement. Both headband cushion and earpad stuffings are quite soft, and covered in faux-leather.
Actionating on the headband to calibrate its width almost always requires taking the A70 off, so that could have been designed better, but for the rest once worn A70 feel more than reasonably comfortable thanks to good haptics, well calibrated clamping force and a limited weight (220g, without the cable).
Passive isolation is very good too. On the flip side, airflow also is minimal so some heat does build up in case of prolonged audition sessions.
When not in use A70 can be flipped and folded onto themselves in a very compact configuration. A soft carry pouch is also supplied.
Sound
Timbre is bodied, soft edged. Tonality is warm, on an obviously V-shaped presentation.
Bass is what plays the principal role on A70, coming accross full, flourished and expansive, especially the mid-bass, which often steals too much off the scene and bloats / veils on the mids, shaping the entire presentation “warm&bassy”.
Mids are recessed but per se not bad. When no big influence comes from the bass they show a certain body and articulation. Trebles are quite nice, not particularly sparkly nor extended but they do help brightening the scene quite often, although some thin metal nuance is present on some fringes.
Soundstage is quite intimate. Imaging and layering are negatively impacted by the bloated bass and the drivers’ general lack of resolving power.
Specifications (declared)
| Driver(s) | 40mm dynamic driver |
| Connector | 3.5mm and 6.35mm single ended connectors |
| Cable | 1 x 2.8m 6.35-3.5mm coiled single ended cable, 1 x 1.5m 3.5-3.5mm single ended cable |
| Sensitivity | 110 dB |
| Impedance | 32 Ohm |
| Frequency Range | 20 – 20000 Hz |
| Battery | 950mAh, 50h playtime |
| MSRP at this post time | $ 61,95 ($ 39,95 ongoing special deal) |
Conclusions
A70 are an inexpensive pair of comfortable closedbacks offering a plethora of connectivity possibilities granting their user really uncommon usage flexibility and convenience.
Soundwise they offer a sub-audiophile-grade output quality, which nevertheless may be appreciated by whoever likes warm bass-focused easy-going / fun presentations.
You can find (and buy) them at the manufacturer’s website – here.
Our generic standard disclaimer.
