Koss Pro3AA Titanium comparison

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Product name	Koss Pro3AA Titanium	Koss Pro4AA Titanium	Koss PortaPro Headphones	Sennheiser HD280 Pro	Sennheiser HD497
Price	$42.62 to $43.59	$58.99 to $66.49	$27.79 to $49.99	$77.25 to $99.99	Check Prices
CNET editors' rating	3.5 stars Overall score: 7.7 (3.5 stars)	3.5 stars Overall score: 7.3 (3.5 stars)	4.0 stars Overall score: 8.3 (4.0 stars)	4.0 stars Overall score: 8.2 (4.0 stars)	3.5 stars Overall score: 7.8 (3.5 stars)
Average user rating	3.0 stars	3.5 stars	4.5 stars	4.0 stars	4.0 stars
Release date	May 15, 2003	May 15, 2003	January 01, 1984	November 01, 2001	January 15, 2002
The Bottom Line	This affordable model offers the detail and transparency of expensive high-end speakers.	These macho headphones can rock out like pro models.	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.	Sennheiser's versatile headphones sound great on DVDs and all kinds of music.	This affordable pro-style model sounds great at home and on the go.
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Response Bandwidth	15 - 20000 Hz	10 - 25000 Hz	15 - 25000 Hz	8 - 25000 Hz	24 - 22000 Hz
Localization	English	English	Info unavailable	English	English
Headphones Form Factor	Ear-cup	Ear-cup	Semi-open	Ear-cup	Ear-cup
Sound Output Mode	Stereo	Stereo	Stereo	Stereo	Stereo
Color	Info unavailable	Info unavailable	Info unavailable	Black	Silver
Connectivity Technology	Wired - None	Wired	Wired	Wired	Wired
Headphones Type	Headphones - Binaural	Headphones - Binaural	Headphones - Binaural	Headphones - Binaural	Headphones - Binaural
Product Type	Headphones - Wired - None	Headphones - Wired	Headphones - Wired	Headphones - Wired	Headphones - Wired
Recommended Use	Home audio system	Home audio system Professional audio system	Portable audio system	Home audio system Professional audio system	Home audio system Portable audio system
Product Description	Koss PRO 3AA - Headphones	Koss PRO 4AA - Headphones	Koss PortaPro Headphones	Sennheiser HD 280 - Headphones	Sennheiser HD 497 - Headphones
Manufacturer Warranty	Limited lifetime warranty	Limited lifetime warranty	Limited lifetime warranty	2 years warranty	2 years warranty
Remote Control	Info unavailable	None	None	None	None
Full specifications	Full specifications	Full specifications	Full specifications	Full specifications	Full specifications
Buying choices	Amazon.com Marketplace $43.59 In stock: Yes Buy.com $42.62 In stock: Yes Prices from 2 CNET Certified stores	Amazon.com $60.15 In stock: Yes Amazon.com Marketplace $66.49 In stock: Yes Buy.com $58.99 In stock: Yes Prices from 3 CNET Certified stores	Amazon.com $30.91 In stock: Yes TigerDirect.com $39.99 In stock: Yes Amazon.com Marketplace $27.79 In stock: Yes Prices from 5 CNET Certified stores	Beach Camera $99.00 In stock: Yes Buydig.com $99.00 In stock: Yes Newegg.com $99.95 In stock: Yes Prices from 11 CNET Certified stores	E-mail me when this product is available
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