Is this model better or 660?

You have to understand that the Sony Z7M2 are 56 ohms so they are easy to drive. Now on the other hand the 660s are 150 ohms and need a little more power to drive them. Now the 660s2 are 300 ohms which need more power. I have the 660s and have no problems with them. I want to get the 660s2 but don't want to take a chance on buying them and I can't drive them with my setup. Hope this help you out. Have a great day.

Would these be great when used with a Steam Deck?

Thanks for your question. The HD 660S2 will go very well with Steam Deck. World Wide Stereo – since 1979 – and a proud authorized Sennheiser dealer.

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Sennheiser HD 660S 2 Open-Back Audiophile Headphones

Product ID: 507909782

Details

Brand
Sennheiser
Color
Black
Ear Placement
Over Ear
Form Factor
Over Ear
Impedance
300 ohm

⚡300 ohm impedance for pro-grade clarity

🎧42mm dynamic drivers

🔊8 Hz - 41.5 kHz frequency range

134227 som

Duties & taxes included

In stock

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Description

🎶 Elevate your audio game with the HD 660S 2 — where every detail matters.

ALL DAY COMFORT FIT - Breathable open-back design with plush cushions for fatigue-free listening marathons.
CRAFTED FOR DURABILITY - Premium German & Irish materials ensure elegance and long-lasting performance.
POWERFUL LOW END IMPACT - Feel every bass drum and piano low with clarity from 27.5 Hz to 60 Hz.
PRECISION TUNED DRIVERS - Ultra-light aluminum voice coils deliver crisp highs and deep, controlled bass.
AUDIOPHILE GRADE SOUNDSTAGE - Experience a spacious, natural sound that immerses you in every note.

The Sennheiser HD 660S 2 are open-back audiophile headphones featuring 42mm dynamic drivers and a wide 8 Hz to 41.5 kHz frequency range. With a 300 ohm impedance, they deliver professional-grade sound clarity, combining precise highs, rich mids, and powerful bass. Designed for long listening sessions, their breathable, plush ear cushions and premium build quality from Germany and Ireland ensure comfort and durability. Ideal for music lovers, gamers, and professionals seeking immersive, high-fidelity audio.

Specifications

ASIN	B0BRT1ZN7Q
Additional Features	stereo pairing
Age Range Description	Adult
Antenna Location	music
Audio Driver Size	42 millimeters
Audio Driver Type	Dynamic Driver
Best Sellers Rank	#9,450 in Electronics ( See Top 100 in Electronics ) #356 in Over-Ear Headphones
Bluetooth Version	5
Brand Name	Sennheiser
Built-In Media	HD 660S2 headphones, 6.3 mm cable (1.8 m), 4.4 mm cable (1.8 m), 6.3 mm to 3.5 mm adapter, Carry pouch
Cable Features	Detachable
Color	Black
Compatible Devices	Smartphone
Connectivity Technology	Wired
Control Method	Touch
Control Type	Media Control
Customer Package Type	Protective delivery packaging with a portable carry pouch
Customer Reviews	4.5 4.5 out of 5 stars (785)
Earpiece Shape	Oval
Enclosure Material	Aluminum
External Testing Certification	nao aplicavel
Frequency Range	8 Hz - 41.5 kHz
Global Trade Identification Number	00810091270370, 04260752330374
Headphone Folding Features	Over Ear
Headphone Jack	1/4 inch TRS, 4.4 mm TRRRS
Headphones Ear Placement	Over Ear
Impedance	300 ohm
Item Weight	0.3 kg
Manufacturer	Sonova
Model Name	HD 660S2
Model Number	700240
Noise Control	Sound Isolation
Number of Items	1
Series Number	700240
Specific Uses For Product	Music
Style Name	Headphones
Theme	Music
Unit Count	1 Count
Warranty Description	2 year manufacturer
Water Resistance Level	Not Water Resistant

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TrustScore 4.5 | 7,300+ reviews

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