Sony MDR-ED21LP Fontopia In-The-Ear Headphones
September 5th, 2009 by Home Audio 
10 Comments 
These super-light, ear-bud headphones weigh a mere five grams (.18 ounces.) They are the perfect headphone for those who relish lightweight, quality headphones. The silent cap confines the music to the listener’s ear and away from those in the immediate area, a plus for those using the headphones in the coffee shop or library. The earphones are also open-air, meaning they allow ambient noises to enter the ear; this translates to a safer headphones, as the listener will be aware of horns, whistles and shouts. These headphones are constructed of an anti-bacterial material for a cleaner listening experience. The MDR-ED21LP’s deliver a quality sound, even with their small size. The groove design and Bass Booster earpiece shape allows for a better fit; additionally, this system creates more bass response than conventional earpiece designs. The headphones use sixteen millimeter drive units for a deep bass and clear treble. Sony also uses neodymium magnets which provide more energy per ounce than other conventional magnets. The PET diaphragm gives the headphones a high rigidity for minimum distortion. Finally, Sony’s Acoustic Twin Turbo circuit achieves high sonic output by utilizying sound chamber and duct technology. The cord is one meter long (3.3 feet) for ample range of movement. The housing is a modern, hi-tech, black and silver metallic finish. The compact carrying pouch stores the ear-buds and cord when not needed; its small size fits nicely in a purse or back (more…)
Tags: Fontopia, Headphones, InTheEar, MDRED21LP, Sony
Posted under: Headphones
3.0 out of 5 stars
Good sound, doesn’t stay on ear while running
I bought these headphones primarily so I can run while listening to music. The headphones provided by Apple iPod’s jiggle too much and fall off while running.
5.0 out of 5 stars
Excellent Product .Great Price
I had the same headphones and accidently broke them on a trip.Couldn’t wait to get home to order the same ones.
3.0 out of 5 stars
Great sound…but uncomfortable.
For the price, these are a great set of in-the-ear headphones. The sound quality rivals much more expensive models.
5.0 out of 5 stars
What a Steal…15 bucks ?!
I just received this earbuds today and got right to it. Plug them into my laptop to listen to music and they were amazing.
5.0 out of 5 stars
Most reliable earbuds ever!
I have owned these in-the-ear headphones for over 10 years now, and they are the most reliable and maintenance-free ear-buds I’ve seen.
4.0 out of 5 stars
Great for the price
I bought about a year or 2 ago because of the reviews I read in Consumer Reports about them. Sure, you could spend a lot more and get even better, but I wasn’t about to go nuts…
5.0 out of 5 stars
Very good!
I needed headphones for running since the ones that came with my i pod touch are really bad and kept falling out.
5.0 out of 5 stars
All I wanted.
Headphones are great. Audio is OK, I am not a sound engineer to tell how good the sound is, but they fit my ears perfectly.
1.0 out of 5 stars
HORRIBLE! Lasted about 6 weeks!
At first I was pleased with these earbuds. They fit well in my ears (with a little turning & tweaking) and the sound was AMAZINGLY better than those Apple earbuds.
5.0 out of 5 stars
Sennheiser CX300’s vs. Sony MDR-ED21LP’s
It’s not surprising to see the Sennheiser CX300’s listed as #1 on Amazon’s list of best-selling earbud headphones.