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high-quality headphones

 
External links in bold
Wired Headphones
with studio monitor headsets, the sound is going to be especially good. but they are not made for noisy environments. to counter that you need a noise-cancelling headset.
Sony MDR-ZX700 ZX Series Stereo Headphones, available from sony $119.99
5Hz-40kHz range (boy it sure sounds nice)! nice bass response! clean highs too. Wood-like detailing and clean, retro-modern design add a hint of 70s-era styling to these premium, on-ear ZX Series Closed supra-aural, Dynamic stereo headphones. 2W (2000mW) power handling capacity (takes a beating). Sensitivity 106 dB/mW. gold unimatch plug. 3.9' coiled cord. Gold-plated, straight stereo mini plug. Circum-Aural Earcup Design. folding design with supplied soft case. Go get these for your stereo and listen to the sound! Nice sound reproduction! nice bang/buck. 50mm drivers. most headphone's lower range is somewhere around 20-100Hz and the upper range around 10kHz-15kHz. that's 2.6 octave difference on the high end and at least 2 octave's difference on the low end for a total of 4.6 octaves extra range compared to regular off-the-shelf stuff!
Audio-Technica ATH-M40fs, available at sweetwater $80
Frequency response: 5Hz to 28KHz, comfortable to wear. Sweetwater has better headphones, but this is a nice price/performance point. If you are looking for more high-end or Audiophile headphones, these are also available from Sweetwater. TRS 1/4" jack.
Audio-Technica ATH-ANC7 Foldable Noise-cancelling Headphones with ANC Circuitry, Integrated Electronics, and 40mm Drivers, available at sweetwater $200
the best from sweetwater. 10Hz-25kHz. doesn't quite have the range of a studio monitor, but it's close. audio functions in passive mode, even without the battery. detachable 1.6m cable, uses AAA battery. has carrying case. other noise-cancelling headphones from sweetwater
Wireless Headphones
LTB LTB-WR51 Cinema 1 True 5.1 Surround Wireless Headphones, available at Radio Shack or shopzilla $270
Motorola S9 Stereo Music Bluetooth Headset, available from BestBuy $100, newegg $47-77
Take calls and listen to music without cords. very small, light headphones.
Insignia Stereo Bluetooth Headphones, available from BestBuy $50
listen to music without cords.
Stereo Bluetooth Headphones, available from nextag $30-249
listen to music without cords.
HP Bluetooth Stereo Headphones(GW470AA#ABA), available from $160-$60instantrebate
active noise-cancellation and SRS WOW audio enhancement. any PC with a 3.5mm audio jack.
Earbuds
Shure E500PTH earbuds, available at shure $500
venerable standard. the best sound quality around (based on studio monitor technology), could probably lay down in an airplane.
Shure E3c earbuds, available at shure $200
venerable standard. nearly the best around, but sticks straight out from your ear, so no laying down in an airplane. Shure has better models that don't stick out from your ear.