Sennheiser HD 660S2 vs Sennheiser HD 620S

Updated Sep 2026 · Scored by the Let’s Compare Data Engine · How we score

For most buyers the Sennheiser HD 660S2 is the better pick — it scores 28/100 to the Sennheiser HD 620S's 23, 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

Sennheiser HD 660S2 leads overall

Sennheiser HD 660S2

Sennheiser HD 620S

Why it stands out

Comfort & Build Weight: 260 g (20% less)

Watch-outs

Compromises to know before you buy

Sennheiser HD 660S2

No microphone — you can't take calls.

Sennheiser HD 620S

No microphone — you can't take calls.

Winner by category for Sennheiser HD 660S2 vs Sennheiser HD 620S
Category	Sennheiser HD 660S2	Sennheiser HD 620S	Winner
Noise Cancelling	0	0	Tie
Wireless	15	15	Tie
Battery	0	0	Tie
Comfort & Build	60	40	Sennheiser HD 660S2
Connectivity	15	15	Tie

In-depth analysisAI

AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Sep 2026.

Sennheiser HD 660S2

The Sennheiser HD 660S2 is a reference headphone model known for its clear, detailed, and warm sound signature. The design includes rich black velour earpads, and the headphones are noted for being lightweight. It provides impressive vocal clarity in the midrange.

Best for vocal trackingBest for classical musicBest for rock

Pros

Features a fuller and warmer bass response than the original HD 660S
The sound is described as clear, crisp, and detailed without sounding overly analytical
Provides excellent detail and separation, with vocals prominently featured
Is noted for being comfortable for long listening sessions due to light weight and earpads

Cons

Can have a rather tight clamping force out of the box
May not be suitable for genres requiring extremely thunderous bass (e.g., EDM or rap)

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.

Sennheiser HD 660S2

Check Price on Amazon

Sennheiser HD 620S

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Physical Comparison

Weight, side by side

Sennheiser HD 660S2Sennheiser HD 620S

Sennheiser HD 620S is 66 g (25%) heavier than Sennheiser HD 660S2.

Review Videos

Hand-picked expert reviews for each product

Detailed Specifications

The full spec sheet, side by side

Wireless

Feature	Sennheiser HD 660S2	Sennheiser HD 620S
Wireless	No	No
Supported Codecs	N/A	N/A

Comfort & Build

Feature	Sennheiser HD 660S2	Sennheiser HD 620S
Weight	260 g20% less	326 g
Folding Design	No	No
Water Resistance	N/A	N/A
Dimensions	15 × 20 × 10 cm	N/A

Connectivity

Feature	Sennheiser HD 660S2	Sennheiser HD 620S
Wired Connection	6.35mm + 4.4mm balanced	N/A
Detachable Cable	Yes	Yes
Built-in Microphone	No	No

Specification Note

Specifications are compiled from official manufacturer data and other reliable internet sources. Some features may vary by region or model configuration.

Frequently Asked Questions

Common questions about Sennheiser HD 660S2 vs Sennheiser HD 620S comparison

Based on our overall comparison score, Sennheiser HD 660S2 rates higher at 24/100 versus 21/100 for Sennheiser HD 620S — a 3-point lead. Sennheiser HD 660S2 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.

Sennheiser HD 660S2 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 24/100 for Sennheiser HD 660S2 and 21/100 for Sennheiser HD 620S.

At launch, Sennheiser HD 620S was the more affordable option ($350) versus Sennheiser HD 660S2 ($599). Weigh that against the overall scores (24/100 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, Sennheiser HD 660S2 (24/100) 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.