If you're doing serious recording then you need a decent pair of headphones that reproduce your music the way it should really sound.

These headphones are worth their weight in gold (or titanium)!

---

Product Description

Fresh Take on the Long-Time Industry Standard This full-size professional quality stereophone has long been the headphone of choice for broadcast and recording professionals whose careers demand reliable equipment and superior performance. As the first dynamic stereophone to deliver true full frequency high-fidelity performance the PRO4AA set the standard when it was introduced in its original form in 1970. In the late 1980s after long service it was retired and replaced by a newer model. Customers clamored for its return and by 1988 it was brought back by popular demand. Since then though we\'ve incorporated performance-enhancing technology and updated its style the essence of the PRO4AA remains unchanged and it continues to set the standard for performance and reliability today. The PRO4AA Titanium features dynamic elements for an exceptionally wide frequency response from 10-25 000 Hz. A 2 mil. titanium coating on its diaphragms increases the rigidity of the element minimizing mechanical distortion and ensuring exceedingly accurate sound reproduction. One-inch (25.4 mm) diameter oxygen-free copper voice coils improve signal transmission and conduction for cleaner clearer sound. For times when every note must be captured and no sound allowed to leak through closed PneumaliteTM cushions form a positive comfortable seal around the ears maximizing bass frequencies and isolating the listener from ambient noise. Designed for frequent use over extended periods the PRO4AA\'s durable steel and rubber headband is generously padded. Adjustable slide bars ensure a snug fit also critical for hearing every note and keeping unwanted sounds out. The heavy-duty single-entry eight-foot coiled cord affords ample flexibility of movement. A 3.5 mm (1/8\") plug and a 6.3 mm (¼\") screw-on type adapter both with gold-flashing are included. Whether you are a sound professional or simply love music the PRO4AA will deliver excellent isolation accurate sound

---

Product Details

• Amazon Sales Rank: #40169 in Consumer Electronics
• Brand: Koss
• Model: 145567
• Released on: 2005-11-29
• Original language: English
• Dimensions: 9.00" h x 5.00" w x 9.00" l, 2.20 pounds

Manufacturer's Description
Fresh Take on the Long-Time Industry Standard This full-size professional quality stereophone has long been the headphone of choice for broadcast and recording professionals whose careers demand reliable equipment and superior performance. As the first dynamic stereophone to deliver true full frequency high-fidelity performance the PRO4AA set the standard when it was introduced in its original form in 1970. In the late 1980s after long service it was retired and replaced by a newer model. Customers clamored for its return and by 1988 it was brought back by popular demand. Since then though we\'ve incorporated performance-enhancing technology and updated its style the essence of the PRO4AA remains unchanged and it continues to set the standard for performance and reliability today. The PRO4AA Titanium features dynamic elements for an exceptionally wide frequency response from 10-25 000 Hz. A 2 mil. titanium coating on its diaphragms increases the rigidity of the element minimizing mechanical distortion and ensuring exceedingly accurate sound reproduction. One-inch (25.4 mm) diameter oxygen-free copper voice coils improve signal transmission and conduction for cleaner clearer sound. For times when every note must be captured and no sound allowed to leak through closed PneumaliteTM cushions form a positive comfortable seal around the ears maximizing bass frequencies and isolating the listener from ambient noise. Designed for frequent use over extended periods the PRO4AA\'s durable steel and rubber headband is generously padded. Adjustable slide bars ensure a snug fit also critical for hearing every note and keeping unwanted sounds out. The heavy-duty single-entry eight-foot coiled cord affords ample flexibility of movement. A 3.5 mm (1/8\") plug and a 6.3 mm (¼\") screw-on type adapter both with gold-flashing are included. Whether you are a sound professional or simply love music the PRO4AA will deliver excellent isolation accurate sound

---

Customer Reviews

A real class act
You wont find a better quality headphone. They are big and they are heavy so you wont be using these jogging or cycling that's for sure. Grab a beer. Sink in to the armchair and forget the world for a while. No wonder the professionals have always used them. KOSS are a great company too.

Koss Pro4Aaa Headphones
Closed cup is great with the super-low bass response. Classic orchestral sounds give concert-hall feeling with a better than surround sound effect.

If you want high quality headphones this is the one to go. Bose is no match for this
The sound is amazing. I used to be able to hear the sound from my computer fans and harddrives. Now I hear nothing. I have not try it on the plane yet. But rather than paying 299 pound for Bose Quiet Comfort 2. This is absolutely a good alternative. Lifetime warranty. Means superior manufacturing quality than Bose. I have tried Bose QC2 but there is no comparison to this. Without the battery to produce noise cancellation Bose is like Ferrari running on Nissan Micra Engine. There is no sound! Congratulation to Bose on that. I would be more than happy to buy a set of ear plug which might only cost me 50pence rather than that.

Perfect for DJ and music aholic people. People with slight hearing difficulties(I'm not talking about deafness) will find that this headphones usefull too. Clear distinct sound.

I guess that's why Bose trick people with the generous offer of discount if buying together with their other sound system, plus installment, plus 30 days try at home crap. They know people cant be bothered to return it once bought because the return process is complicated and you have to pay for the postage, Which might be 50 quid plus if you happened to be tricked to accept the discount package with sound systems.

Good quality speaks for itself, no need discount, or home trial, or one year warranty or other crap. Good stuff last forever till we die unless we abuse it.

If any of you don't understand the meaning of quality you should buy Bose crap.