OneOdio Monitor 80

The Monitor 60 was decent value and a step forward for OneOdio, they continue in that direction offering their first open back headphones and an improved design from the popular pro series. The Monitor 80 continues using the great dual plug feature that allows adapter free listening and the ability to connect multiple headphones in a daisy chain.

Let's talk about the build, it improved but similar, the headphones are mostly plastic with metal reinforcement in the headband and adjustment still the feel solid and well made. the earcups do move a little too freely but this is normal, and they do provide good swivel to fit a variety of heads plastic creek is minimal and not noticed during music. These are lightweight and comfortable, because of the very open back music leak is expected so they should be used indoors.

Inside the box:
Monitor 80
EVA Case
User Manual
Cable 1: 3.5mm to 3.5mm cable (3m)
Cable 2: 3.5mm to 6.35mm coiled cable (1.5m-3.5m）

Sound:
It should be noted that while these are 250Ohms and benefit from an amplifier or combo they aren't super hard to dive. I used a variety of devices including the ifi Gryphon, the TRI TK-2, tube t7 and the SMSL SP200 plus some DAPs and Bluetooth DACs.
Bass: Bass here is good. It has good speed and comes across punchy Sub-Bass has good depth and mid-Bass is tight and warm. It definitely has a good, controlled Bass with the Sub rolling off just quickly as expected from an open. When compared to my Philips X2HR I prefer the Monitor 80 Bass slightly more.

Mids: it's a V-shaped headphone so recession is expected and normal but still vocals are warm, natural and pleasant in the lower mids, the upper mids do get slightly forward and bright but most recordings sounded good and Mids themselves had decent details and layering. When compared to my AKG M220 pro they seemed clearer and crisper but smoothed.

Treble: Highs present with good extension and clarity, although there is a fast roll off, they do have some sparkle and energy up in the top end. The treble itself is fairly neutral and details are good.

Soundstage: is wide as it is deep, it is does not super extend itself but manages a more natural field around the user. There is decent layering and separation here for a sub $100 monitor. While not as wide as the M220 it does best the X2HR in positioning.

My Conclusion:
While a good monitor for studio use, I think it works well as an enjoyable non fatiguing pair of headphones for someone beginning or on a budget, while not completely neutral in presentation they do work well for monitoring.