Comparison and Difference Between
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Brand and Model Specifications
Information about the brand, model release date.
| Manufacturer | Sennheiser | Sennheiser |
| Model | CX 100 | HD 660S |
| Photo |  |  |
| Release Date | 2019 | 2017 |
| What Hi-Fi? Rating | - | - |
| Amazon Rating | ||
| Price |
General Specifications
Type, design and features.
| Headphone Type | In-ear (earbuds) | Over-ear (circumaural) |
| Earcup Design | n/a | Open-back |
| Noise Options | Noise-isolating | None |
| Transducer Technology | Dynamic | Dynamic |
| Microphone | No | No |
| Connectivity | Wired | Wired |
| Cable Length | ~1.2 m ~3.94 ft ~155 in | ~3 m ~9.84 ft ~387.5 in |
| Detachable Cable | No | Yes |
| Battery Life | - | - |
| Battery Quick Charge | - | - |
| Water Protection | No | No |
| Inputs | 3.5 mm | |
| Controls | No | No |
| Foldable | Yes | No |
Technical Specs
Tech specifications of the headphones.
| Frequency Response [Hz] | 17 - 20,000 | 9 – 41,500 |
| Impedance [Ohms] | 28 | 150 |
| Maximum Input Power [mW] | - | - |
| Maximum SPL | 119 | 104 |
| Distortion | <0.5% | < 0,04% |
| Driver Diameter | - | 44.1 mm |
Dimensions and Weight
Physical characteristics of the speakers (without stands).
| Length | ~0.5 in ~12.7 mm ~1.27 cm | ~7.7 in ~195.58 mm ~19.56 cm |
| Width | ~0.5 in ~12.7 mm ~1.27 cm | ~7.1 in ~180.34 mm ~18.03 cm |
| Height | ~0.5 in ~12.7 mm ~1.27 cm | ~3.6 in ~91.44 mm ~9.14 cm |
| Weight | ~0.02 lb ~9.07 g ~0.01 kg | ~0.6 lb ~272.16 g ~0.27 kg |
Packaging Info
Package dimensions and weight.
| Shipping Length | ~9.2 in ~233.68 mm ~23.37 cm | ~12.6 in ~320.04 mm ~32 cm |
| Shipping Width | ~7.5 in ~190.5 mm ~19.05 cm | ~10.1 in ~180.34 mm ~18.03 cm |
| Shipping Height | ~5.8 in ~147.32 mm ~14.73 cm | ~4.2 in ~106.68 mm ~10.67 cm |
| Shipping Weight | ~0.2 lb ~90.72 g ~0.09 kg | ~3.4 lb ~1542.21 g ~1.54 kg |
Colors and Accessories
List of available colors and optional accessories.
| Colors |
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| Replacable Earpads | Yes | Yes |
| What's in the Box |
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Price and Warranty
Satisfaction is (not) guaranteed.
| Warranty | 2 Years | 2 Years |
| Amazon Price |
Disclaimers
Small print and stuff...
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