Sony MDR IF240RK - headphones comparison

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Product name	Sony MDR IF240RK - headphones	Sennheiser RS120	Koss PortaPro Headphones	Sennheiser RS130	Pioneer SE-DIR800C
Price	$59.99	$57.99 to $119.95	$32.28 to $49.99	$112.97 to $179.99	$249.98 to $399.99
CNET editors' rating	stars Overall score: ( stars)	3.5 stars Overall score: 7.0 (3.5 stars)	4.0 stars Overall score: 8.3 (4.0 stars)	3.5 stars Overall score: 7.3 (3.5 stars)	4.0 stars Overall score: 8.3 (4.0 stars)
Average user rating		3.0 stars	4.0 stars	3.0 stars	3.5 stars
Release date		October 01, 2004	January 01, 1984		January 15, 2005
The Bottom Line		Sennheiser's affordable, comfortable wireless headphones sound almost as good as corded 'phones.	Koss hit a home run with the PortaPros. Love or hate the design, there's no denying the sound quality here: they're the ideal companion for mobile audiophiles and home theater enthusiasts.	The RS130s are Sennheiser's best wireless headphones to date.	The Pioneer SE-DIR800C noise-free wireless headphones are the first we've seen to feature Dolby Headphone processing--and they sound great.
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Response Bandwidth	18 - 22000 Hz	22 - 19500 Hz	15 - 25000 Hz	18 - 21000 Hz	12 - 22000 Hz
Headphones Form Factor	Ear-cup	Ear-cup	Semi-open	Ear-cup	Ear-cup
Sound Output Mode	Stereo	Stereo	Stereo	Stereo	Info unavailable
Signal-To-Noise Ratio	Info unavailable	65 dBA	Info unavailable	68 dBA	Info unavailable
Connectivity Technology	Wireless - Infrared - 880 nm	Wireless - Radio - 900MHz	Wired	Wireless - Radio - 863 - 865MHz - 926 - 928MHz	Wireless - Infrared
Headphones Type	Headphones - Binaural	Headphones - Binaural	Headphones - Binaural	Headphones - Binaural	Headphones - Binaural
Product Type	Headphones - Wireless - Infrared	Headphones - Wireless - Radio	Headphones - Wired	Headphones - Wireless - Radio	Headphones - Wireless - Infrared
Recommended Use	Home audio system	Home audio system	Portable audio system	TV Home audio system	Home audio system
Product Description	Sony MDR IF240RK - Headphones	Sennheiser RS 120 - Headphones	Koss PortaPro Headphones	Sennheiser RS 130 - Headphones	Pioneer SE DIR800C - Headphones
Manufacturer Warranty	Info unavailable	2 years warranty	Limited lifetime warranty	Info unavailable	Info unavailable
Remote Control	None	None	None	None	None
Full specifications	Full specifications	Full specifications	Full specifications	Full specifications	Full specifications
Buying choices	Sears $59.99 In stock: Yes Price from 1 authorized store	Amazon.com $57.99 In stock: Yes Newegg.com $57.99 In stock: Yes TigerDirect.com $74.99 In stock: Yes Prices from 9 CNET Certified stores	Amazon.com $32.28 In stock: Yes J&R Music and Computer World $39.99 In stock: Yes TigerDirect.com $39.99 In stock: Yes Prices from 5 CNET Certified stores	Amazon.com $114.08 In stock: Yes Amazon.com Marketplace $112.97 In stock: Yes SoundEarphones.com $159.95 In stock: Yes Prices from 4 CNET Certified stores	Amazon.com $249.99 In stock: Yes B&H Photo-Video $249.99 In stock: Yes Amazon.com Marketplace $254.10 In stock: Yes Prices from 4 CNET Certified stores
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