Based on our overall comparison score, Audio-Technica ATH-M40x rates higher at 26/100 versus 21/100 for Sennheiser HD 620S — a 5-point lead. Audio-Technica ATH-M40x is the stronger overall pick, though the right choice still depends on which specs matter most to you; the full spec table above breaks down every difference.
Audio-Technica ATH-M40x vs Sennheiser HD 620S
Updated Sep 2026 · Scored by the Let’s Compare Data Engine · How we score
For most buyers the Audio-Technica ATH-M40x is the better pick — it scores 30/100 to the Sennheiser HD 620S's 21, leading on Comfort & Build. Choose the Sennheiser HD 620S instead if you want to spend less.
- Sound quality isn't scored yet (we have no measured audio data), so the score covers features, battery, noise cancelling and build.
Verdict
Our overall take, at a glance
Key takeaways
- Audio-Technica ATH-M40x leads Sennheiser HD 620S overall by 9 points (30 vs 21 out of 100).
- Audio-Technica ATH-M40x stands out on Comfort & Build Weight: 240 g (26% less).
Audio-Technica ATH-M40x leads overall
Audio-Technica ATH-M40x
30
Sennheiser HD 620S
21
Why it stands out
- Comfort & Build Weight: 240 g (26% less)
Watch-outs
Compromises to know before you buy
Audio-Technica ATH-M40x
- No microphone — you can't take calls.
Sennheiser HD 620S
- No microphone — you can't take calls.
In-depth analysisAI
AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Sep 2026.
Audio-Technica ATH-M40x
The Audio-Technica ATH-M40x is an over-ear, dynamic closed-back headphone designed primarily for studio monitoring and audio production. Introduced as part of a remastered M-Series lineup in 2014, it features 40mm drivers with neodymium magnets and copper-clad aluminum voice coils. Operating with a 35-ohm impedance and a frequency response of 15 to 24,000 Hz, it is tuned to provide a flatter, more accurate sound profile with minimal coloration.
Best for audio mixing and studio monitoring requiring accurate, uncolored frequency…Best for content creation and tracking where a lightweight, closed-back design is…
Pros
- Equipped with two different detachable cables (a 1.2-meter straight and a 3-meter coiled cable) for physical flexibility
- Tuned for a relatively flat frequency response, helping to deliver accurate and uncolored audio reproduction
- Weighs 240 grams, presenting a relatively lightweight option for long listening sessions
- Includes a screw-on 6.5mm adapter to ensure compatibility with professional audio equipment
Cons
- Includes only a basic soft pouch for storage, offering limited physical protection compared to a hardshell case
Sennheiser HD 620S
The Sennheiser HD 620S is a closed-back dynamic headphone designed for audiophiles who want the mid-range performance and tuning characteristic of the open-back HD 600 series but require passive isolation. It features a closed-cup acoustic design aimed at providing a spacious soundstage while physically blocking out external noise.
Best for Audiophile-grade critical listening in offices or shared living spaces where…Best for Fans of the classic Sennheiser sound signature who need isolation from ambient…
Pros
- Provides passive noise isolation to block external sound and prevent leakage
- Adapts the highly regarded Sennheiser HD 6X0 sound signature into a closed-back layout
- Durable build design intended for long-term reliability
Cons
- Inherent acoustic limitations of closed ear cups may result in a less natural soundstage compared to true open-back models
- Clamp force and physical headband design may cause pressure discomfort during extended listening sessions
Value for Money
Which is the better deal for the price
Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.
Audio-Technica ATH-M40x
Sennheiser HD 620S
Physical Comparison
Weight, side by side
Audio-Technica ATH-M40xSennheiser HD 620S
Sennheiser HD 620S is 86 g (36%) heavier than Audio-Technica ATH-M40x.
Review Videos
Hand-picked expert reviews for each product
Detailed Specifications
The full spec sheet, side by side
Frequently Asked Questions
Common questions about Audio-Technica ATH-M40x vs Sennheiser HD 620S comparison
Audio-Technica ATH-M40x and Sennheiser HD 620S are compared side by side above across every spec in the headphones category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 26/100 for Audio-Technica ATH-M40x and 21/100 for Sennheiser HD 620S.
At launch, Audio-Technica ATH-M40x was the more affordable option ($99) versus Sennheiser HD 620S ($350). Weigh that against the overall scores (26/100 vs 21/100) and the value-for-money meter above to judge whether the higher-rated model justifies its price for your needs. Current retail prices vary — check the retailer.
If you want the higher-rated headphones option overall, Audio-Technica ATH-M40x (26/100) edges out Sennheiser HD 620S (21/100). But if Sennheiser HD 620S is cheaper or stronger on the specific specs you care about, it can still be the better buy — use the spec table and strengths profile above to decide.
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