Headphones · Side-by-side
HIFIMAN HE1000 Stealth vs OLLO Audio X1
The OLLO Audio X1 scores 0.4 higher and costs $570 less - on the data, it just wins.
See which one to buy
HIFIMAN
HE1000 Stealth
A years-old HIFIMAN flagship, cheaper than ever: Stealth Magnets, a nanometer diaphragm, a wide open soundstage, and a fun, bright tuning - mind the treble peaks and the large fit.
Higher score
OLLO Audio
X1
An open-back studio reference headphone with AI-assisted per-unit calibration (±1dB), modular design, real wood cups, and a flat tuning that works for both mixing and music.
Sound signature, overlaid
Each axis is positioned from the review body itself. The same word-frequency model anchors every review on the catalogue.
| Axis | HIFIMAN HE1000 Stealth | OLLO Audio X1 |
|---|---|---|
| Warm to Bright | leans bright | leans bright |
| Relaxed to Analytical | leans analytical | sits near neutral |
| Polite to Aggressive | leans aggressive | leans aggressive |
| Lean to Bass-heavy | sits near neutral | leans lean |
| Intimate to Wide stage | leans wide stage | leans wide stage |
Specs, side by side
Manufacturer figures unless a measured value is noted; an em-dash means we haven't recorded that spec yet.
| Spec | HIFIMAN HE1000 Stealth | OLLO Audio X1 |
|---|---|---|
| Driver | Planar magnetic | Dynamic |
| Impedance | 32 Ω | 32 Ω |
| Frequency response | 8 Hz – 65 kHz | — |
| Connector | Dual 3.5 mm | Dual 2.5 mm (locking) |
| Weight | 458 g | — |
| Sensitivity | 93 dB | 101 dB |
Pros & cons, side by side
HE1000 Stealth
Pros
- Excellent comfort despite 458g - the wide suspension band spreads the weight
- Spacious, deep, breathable three-material hybrid pads; user-replaceable
- Top-tier hand-polished, CNC-machined aluminium and real leather build
- Stealth Magnets + nanometer diaphragm + Window Shade grille
- Dual 3.5mm connectors; includes an extra balanced cable
- Wide, open, out-of-your-head soundstage with strong imaging
- Tight, well-textured bass with more weight than most HIFIMANs
- Fun, engaging, slightly bright reference tuning with natural timbre
Cons
- Genuinely large - may not fit smaller heads; cups can press the jaw
- Peaky, uneven treble with sharp spots - too much on hot recordings
- Revealing - unforgiving of poor recordings or cheap sources
- On the heavier side at 458g
- Less transparent and detailed than the pricier HE1000SE
- Upper-mid lift over a lower dip won't suit thick, forward-vocal lovers
X1
Pros
- USC II per-unit calibration to ±1dB tolerance
- Real wood machined earcups, no veneer
- Modular, repairable, service-friendly design
- Hybrid velour + perforated leather pads, user-replaceable
- Locking dual 2.5mm cable with forward-angled entry
- Sturdy hard carrying case included
- 32Ω / 101dB - works from any laptop or interface
- Realphones-compatible mix translation profiles
Cons
- Tight clamp force - takes adjustment if you're used to looser cans
- Soundstage is realistic, not impressively wide
- Tuning is intentionally flat - some will call it boring
- Packaging is minimal - not premium-feeling
- Pads are functional, not luxurious
- Not the cheapest at this price point
Which one to buy
Short version: the rubric leans OLLO Audio X1 - but what's upstream, what you listen for, and what your budget allows can each flip it. Here's the case for each.
The case for the HE1000 Stealth
HIFIMAN HE1000 Stealth
- Excellent comfort despite 458g - the wide suspension band spreads the weight
- Spacious, deep, breathable three-material hybrid pads; user-replaceable
- That $570 premium buys character and build, not a higher score
The case for the X1
OLLO Audio X1
- USC II per-unit calibration to ±1dB tolerance
- Real wood machined earcups, no veneer
- Cheaper by $570, and it gives up nothing on the score
- Higher score, plainly - Highly Recommended, 8.9/10, 0.4 clear of the HIFIMAN HE1000 Stealth
How they were tested head-to-head
Same chain for both - the HIFIMAN HE1000 Stealth and the OLLO Audio X1, driven from the same HIFIMAN Serenade amp/DAC (Himalaya Pro R2R), fed bit-perfect from the Hermes 12th digital transport over USB. The two were volume-matched at the output and swapped across the same set of reference recordings - acoustic, vocal-led, dense modern, and large-scale orchestral - so every session compared like for like. No demo-room verdicts, no half-remembered impressions from an earlier listen: this is a direct head-to-head, scored against the published headphones reference list at the matching price tier.
What the 0.4-point score gap actually means
A 0.4-point gap is roughly where most listeners pick the higher-scored piece blind on any reference track. The OLLO Audio X1 is the cleaner performer here - more resolution, tighter bass, or a more even tonal balance, depending on the category. The lower-scored piece is the budget or character pick, not the equal-but-different one.
What would flip the verdict
The OLLO Audio X1 wins on the rubric, but the HIFIMAN HE1000 Stealth becomes the right pick under three conditions. First, when system fit favours it - your amplifier, room, or source has a character that pairs better with this piece than with the higher scorer. Second, when one of the cons listed against the OLLO Audio X1 is a hard disqualifier in your context: drive requirements, ergonomics, connectivity, or footprint. Third, when budget is genuinely binding - the HIFIMAN HE1000 Stealth costs more than the higher-scored piece, which is unusual, and only earns it with a specific synergy. Outside those three, the higher score is the safer bet.
Common questions about this comparison
What's the real-world difference between the HIFIMAN HE1000 Stealth and the OLLO Audio X1?
The OLLO Audio X1 edges it where it's measured, 8.9 to 8.5. Their voicing is close - both sit in the same broad headphones character - so what separates them is the specifics each review calls out, not the overall tilt. Each review flags something different - the HE1000 Stealth's "Dual 3.5mm connectors; includes an extra balanced cable" against the X1's "Locking dual 2.5mm cable with forward-angled entry". Choose on that, not the score column.
Which should you buy, the HIFIMAN HE1000 Stealth or the OLLO Audio X1?
Most listeners pick the OLLO Audio X1 blind here - a 0.4-point gap is where the cleaner performer shows up on any reference track. The HIFIMAN HE1000 Stealth earns the nod only for a reason you can name: budget, a character you prefer, or a chain it pairs with better.
Is the HE1000 Stealth's $570 premium worth it?
Not on the numbers - $570 more for 0.4 less on the rubric. You're paying for what's specific to the HIFIMAN HE1000 Stealth - "Wide, open, out-of-your-head soundstage with strong imaging" - not for measured performance, so it's worth it only if that solves a problem the OLLO Audio X1 leaves open.
Where they rank
This page is the head-to-head - the buying guides put both of these up against the whole field.