OneOdio Pro-10 vs 7Hz Salnotes Zero:2
Quick take: The 7Hz Salnotes Zero:2 costs $5 less.
Which one to buy
This is less a comparison of two headphones than of two formats at about the same price. The OneOdio Pro-10 is a closed-back over-ear with 50mm drivers, a 3.5mm jack on one cup and a 6.35mm jack on the other, a port to chain a second headphone, two cables and swiveling cups for one-ear monitoring. That makes it a practical tool for keyboards, interfaces, mixers and teaching. The 7Hz Salnotes Zero:2 is an in-ear with a detachable 2-pin cable, and owners widely treat it as a default budget pick around $25. Its warm bass shelf sits on an otherwise neutral, correct-sounding base.
For listening alone, the Zero:2's tuning is the more praised of the two. For plugging into studio gear, sharing audio with a student or using it at a desk all day, the Pro-10 does things an IEM can't. Each has its own known flaw: the Pro-10's pleather pads flake around year two, and the Zero:2 has a pattern of one channel dying within months.
OneOdio Pro-10
For when you need one cheap headphone for a keyboard, audio interface or mixer, want to share audio through the second jack, or prefer an over-ear for practice and podcasting.
7Hz Salnotes Zero:2
If you mainly want widely recommended sound for $25 from a phone or dongle, and like warm, punchy bass for EDM, hip-hop or the gym.
| Spec | OneOdio Pro-10 | 7Hz Salnotes Zero:2 |
|---|---|---|
| Approx. price | ~$30 | ~$25 |
| Rating | — | — |
| Type | Wired & Studio | Wired & Studio |
| Noise Cancelling | None | None |
| Battery (single charge) | — | — |
| Battery (with case) | — | — |
| Quick Charge | — | — |
| Codecs | — | — |
| Bluetooth | — | — |
| Multipoint | No | No |
| Driver Size | 50 mm | 10 mm |
| Weight | — | — |
| Water Resistance | — | — |
| Wireless Charging | No | No |
| Transparency Mode | No | No |
| Spatial Audio | No | No |
| App EQ | No | No |
Pros & cons
OneOdio Pro-10
- ✓3.5mm and 6.35mm inputs on the cups — no adapters for interfaces, amps, or mixers
- ✓Spare jack works as a share port to daisy-chain a second headphone
- ✓50mm drivers with punchy bass and a fun, mild-V tuning
- ✓Ships with both a coiled pro cable and a mobile cable with mic
- ✓90-degree swiveling cups for single-ear DJ monitoring
- ✓Plush padding and solid isolation for the price
- ✓32-ohm impedance runs from anything
- ✗Not actually neutral — bass boost and glossy treble make it a poor mixing reference
- ✗Clamping force is firm out of the box; big heads will feel it
- ✗Build is lightweight plastic that creaks and won't survive real road abuse
- ✗Cups get warm during long closed-back sessions
- ✗Manufacturer doesn't publish a weight spec
7Hz Salnotes Zero:2
- ✓Reference-grade 'neutral with bass boost' tuning rare at any price
- ✓Cleaner and more balanced than the Chu II per owners who have both
- ✓Low-distortion 10mm dynamic with PU+metal composite diaphragm
- ✓Detachable 0.78mm 2-pin cable, with 3.5mm or USB-C and mic options
- ✓Light, comfortable shells for long sessions
- ✓Runs adequately from any phone or laptop jack
- ✗Short nozzles make a good seal genuinely hard for some ears — tip-rolling likely
- ✗Plastic shells and basic cable look and feel their price
- ✗No carry case or accessories beyond ear tips
- ✗32-ohm impedance wants a touch more volume than sensitive rivals
- ✗Bright colorways aren't for everyone
OneOdio Pro-10 vs 7Hz Salnotes Zero:2: common questions
Is the Pro-10 or the Zero:2 better for recording or monitoring?▾
The Pro-10, for practical reasons: its 6.35mm jack plugs straight into mixers and interfaces, the cups swivel for one-ear monitoring, and the closed cups limit bleed when tracking vocals. Neither is a flat mixing reference, and the Pro-10's bass boost and soft treble mislead for mix decisions.
Does the Zero:2 or the Pro-10 sound better for music?▾
The Zero:2's tuning gets more praise. Its bass sits on a neutral, well-balanced base, while the Pro-10's V-shaped tuning is fun but soft on detail with a cheap sheen in the treble.