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 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black

Product ID: 513515074

Details

Brand
Sennheiser
Colour
Black
Connectivity technology
Wired
Ear placement
Over Ear
Form factor
Over Ear
Headphone jack
1/4 inch TRS

🎧42mm airflow-optimized transducers

🎼8 Hz - 41.5 kHz frequency range

🔊300Ω ultra-light aluminum voice coil

Description

🎶 Elevate your audio game — hear what others miss!

NEXT LEVEL BASS IMPACT - Double the sound pressure at the lowest octaves means you *feel* the music, not just hear it.
BREATHABLE OPEN BACK COMFORT - Designed for marathon listening sessions with plush cushions and superior airflow to keep you cool.
STUDIO GRADE SOUND PRECISION - Experience every note with ultra-high fidelity and deep sub bass that puts you in the recording booth.
GERMAN ENGINEERING IRISH CRAFTSMANSHIP - Premium build quality ensures durability and timeless style with elegant bronze accents.
DETACHABLE CABLES VERSATILE CONNECTIVITY - Includes multiple cable options for seamless desktop or mobile use without compromise.

The Sennheiser HD 660S2 wired audiophile headphones deliver natural, relaxed high-fidelity sound with enhanced sub bass thanks to a 42mm airflow-optimized transducer and ultra-light 300-ohm aluminum voice coil. Featuring an open-back design for exceptional comfort and ventilation, these headphones cover an expansive frequency range of 8 Hz to 41.5 kHz. Crafted with German engineering and Irish manufacturing, they come with detachable cables and a vented magnet system to minimize distortion, making them ideal for professional-grade music listening and long sessions.

Specifications

ASIN	B0BRT1ZN7Q
Age Range Description	Adult
Antenna Location	music
Audio Driver Size	42 Millimetres
Audio Driver Type	Dynamic Driver
Best Sellers Rank	46,563 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 234 in Studio Headphones
Bluetooth Version	5.0
Box Contents	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
Brand Name	Sennheiser
Cable Features	Detachable
Colour	Black
Compatible Devices	Smartphone
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 (758)
Earpiece Shape	over_ear
Enclosure Material	Aluminium
External Testing Certification	nao aplicavel
Frequency Range	8Hz - 41,500Hz
Global Trade Identification Number	00810091270370, 04260752330374
Headphone Form Factor	Over Ear
Headphone Jack	1/4 inch TRS, 4.4 mm TRRRS
Headphones Ear Placement	Over Ear
Impedance	300 Ohms
Item Weight	0.3 Kilograms
Manufacturer	Sonova
Model Name	HD 660S2
Model Number	700240
Network Connectivity Technology	Wired
Noise Control	Sound Isolation
Number of Items	1
Product Features	stereo pairing
Series Number	700240
Specific Uses For Product	Music
Style Name	Headphones
Theme	Music
Unit Count	1.0 count
Water Resistance Level	Not Water Resistant
Wireless Technology Type	Bluetooth

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