Sennheiser HD590 on an airline flight?

Husk01: the Sennheiser DSP 360 is a small amplifier / digital signal processing unit. It has RCA inputs for CD players, etc., and a mini-jack for output to headphones. The "DSP" feature creates the sense of a nearly 360 wrap-around sound (this technology was originally developed for use in combat aircraft). Although the DSP 360 does not offer noise cancellation (which can be very enjoyable on long plane flights), I have found it to work well anyway. The DSP 360 retails for about $150, but I bought mine on sale for $49 from The Audio Advisor about a year ago.

The HD280pro would be better. Sealed, cheap and sound pretty good also.

I have the Sennheiser HD580's and do a lot of business travel where I have tried using these. Since a jet makes so much noise, if I turn it up to the point where my neighbor can hear, it is probably too loud for my own hearing. I am looking at switching to etymotic ear buds with a much higher level of noise isolation. http://www.headphone.com/layout.php?topicID=3&subTopicID=26

The noise, vibration and harshness developed by jets tire you more than you think; Etymotics are the headphones to use on business travel and they now make a lower-priced model, the ER-6.