Sennheiser HD 620S

$119.98

$119.98 ~~$399.95~~

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Sennheiser HD 620S

$119.98

$119.98 ~~$399.95~~

Product description

Product reviews

Shipping & Return

by Crutchfield's Jeff Miller

Closed-back wired headphones with an open, vivid sound

It's always a big deal when Sennheiser releases a headphone in their legendary wired "HD 600" series — but the arrival of this closed-back HD 620S really caught my attention. Sennheiser designed them to perform more like open-backs, with a wider soundstage, airier highs, and controlled bass response. But the closed earcups allowed me to audition them in the office, without disturbing my work neighbors.

I'll get into my listening impressions a little further down, but fans of the open-backs in this series can expect some familiarities — like superb detail retrieval and precise imaging. But as far as the overall sonic presentation, these headphones are more akin to the HD 560S. The width of the soundstage extends much further than the more intimate, immediate sound you get from, say, the HD 660S2.

Angled, well-engineered drivers

This cutaway view shows the steel frame surrounding the drivers, angled to direct sound properly to your ear and extend the soundstage.

Sennheiser's dynamic drivers are made up of high-grade 38mm soft diaphragms, ultra-lightweight aluminum voice coils, and an advanced damping system. The steel frame protecting the drivers also acts as a baffle to curb internal reflections and unwanted resonances.

They've angled the 42mm drivers to control how the sound hits your ears, both with direction and timing. It spreads the soundstage well outside the head to the left and right. Within that wide presentation, there's strong separation, placement, and detail. Vocals typically occupy the center — more between the ears — while other instruments stretch from side-to-side, all the way to the extremes.

Sturdy design with a snug, nicely padded fit

The HD 620S headphones offer a snug, secure fit that keeps the drivers properly aligned with your ears. With the steel frame and robust plastic earcups, they feel heavier than other 600-series headphones. But I found the weight was distributed well. And the generous padding — especially where the headband met the crown of my head — kept them from causing fatigue. For the ear pads, Sennheiser went with soft, synthetic leather instead of their traditional velour.

My listening impressions

At 150 ohms, these headphones are more efficient than the 300-ohm HD 660S2s, but still require extra power to perform their best. I primarily listened through a stack of desktop iFi Audio gear (consisting of older versions of their ZEN DAC 3 and ZEN CAN), but I also had good results on the go with the portable iFi GO Bar.

Sennheiser tuned them for a noticeable emphasis on the highs and lows, with a midrange that's more laid back. This can present itself in different ways when it comes to vocals. Singers with deep or chesty vocals come across like they're further away, back in the mix. Meanwhile, transients really jump out, bringing some of the micro details to the forefront in a way that you don't often hear.

The Beyonce duet with Miley Cyrus "II Most Wanted" played in 24-bit/44.1 kHz on a Qobuz playlist of new releases. I feel like I've heard this song 100 times driving my kids to school, but never like this. Acoustic guitar chord changes and violin flicks and strums all had a vivid presence that leant some urgency, but at times could drown out the two singers — even with both belting their most powerfully.

On a few non-vocal tracks, that extra snap, sparkle, and punch seem to dance around the large soundstage. Trent Reznor's crunchy, percussive "Brutalizer" off The Challengers original soundtrack was a highlight. It has a synthy, atmospheric vibe with lots of movement and panning left-to-right. And it becomes all the more kinetic and vibrant when you can better pinpoint and localize the sound placement.

Product highlights:

over-the-ear wired headphones for focused listening
closed-back design offers bass reinforcement and better noise isolation
part of Sennheiser's legendary HD600 series
- designed to deliver a wider, more "open" sound presentation than most closed-back headphones
- drivers made at Sennheiser's "audiophile center of excellence" facility in Ireland
we recommend a separate headphone amplifier for proper power and the best possible sound

Driver design:

42mm dynamic drivers angled to deliver a wide, spacious sound
tuned with an emphasis on naturally detailed highs and strong, controlled bass
38mm soft diaphragms framed with a steel baffle for even airflow
vented magnet design for tightly controlled diaphragm movement
ultra-light aluminum voice coils ensure precise impulse control and fast transient response

General info and specs:

robust design with textured, molded plastic frame and steel-reinforced sliders and earcups
snug, well-cushioned fit with soft headband padding
- artificial leather ear pads with internal ventilation and generous cushioning
detachable 5.9-foot unbalanced cable with 3.5mm mini plug
includes 1/4" plug adapter
frequency response: 6-30,000 Hz
sensitivity: 105 dB
impedance: 150 ohms
weight: 11.4 oz. (without cable)
warranty: 2 years
MFR # 700401
Item # 143HD620S

Fit Factors^SM

Snug fit
Soft padding (headband)
Good for focused listening

What's in the box:

Sennheiser HD 620S owner's manual

Over-ear headphones (black)
70" Audio cable (attached)(2.5mm plug on one end and straight 3.5mm plug on other end)
Screw-on 3.5mm-to-6.3mm adapter
Carrying pouch
Safety Guide

Sennheiser HD 620S

Sennheiser HD 620S

About the Sennheiser HD 620S

Closed-back wired headphones with an open, vivid sound

Angled, well-engineered drivers

Sturdy design with a snug, nicely padded fit

My listening impressions

Product highlights:

Driver design:

General info and specs:

Fit Factors^SM

What's in the box:

Featured video:

Sennheiser HD 620S

Sennheiser HD 620S

About the Sennheiser HD 620S

Product highlights:

Driver design:

General info and specs:

Fit FactorsSM

What's in the box:

Featured video:

Fit Factors^SM