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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🎶 Elevate your audio game—hear it, feel it, own the moment.

FEEL EVERY BEAT - Double the sound pressure at the lowest octaves means you don’t just hear the bass—you feel it, like you’re in the studio.
COMFORT THAT LASTS - Open-back design and plush ear cushions ensure breathable comfort for marathon listening sessions without fatigue.
CRAFTED FOR EXCELLENCE - Designed in Germany, made in Ireland, with a wide 8 Hz - 41.5 kHz frequency range and detachable cables for versatile, premium use.
STUDIO GRADE SOUND PRECISION - Experience crystal-clear highs and deep sub-bass with a 300-ohm aluminum voice coil engineered for impeccable impulse response.
BREATHE EASY WITH AIRFLOW TECH - Optimized 42mm transducers and vented magnet system minimize distortion and keep your sound fresh and natural.

The Sennheiser HD 660S2 wired audiophile headphones deliver natural, high-fidelity sound with enhanced sub-bass impact thanks to a 300-ohm ultra-light aluminum voice coil and airflow-optimized 42mm transducers. Featuring a vented magnet system for minimal distortion, an open-back breathable design, and plush ear cushions, these headphones offer exceptional comfort for extended use. Designed in Germany and made in Ireland, they cover a wide frequency range (8 Hz - 41.5 kHz) and include detachable cables for flexible connectivity.

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TrustScore 4.5 | 7,300+ reviews

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Age range (description)	Adult
Material	Aluminium
Specific uses for product	Music
Recommended uses for product	music
Compatible devices	Smartphone
Theme	Music
Control type	Media Control
Cable feature	Detachable
Water resistance level	Not Water Resistant
Frequency range	8 Hz - 41.5 kHz
Package type	Protective delivery packaging with a portable carry pouch
Unit count	1.0 Count
Style	Headphones
Product Dimensions	7.62 x 17.78 x 17.78 cm; 621 g
Item model number	700240
Connector	3.5mm Jack
Speaker Amplification Type	Passive
Material Type	Aluminium
Size	M
Power Source	Corded Electric
Item Weight	621 g

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

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