Sennheiser PX 100 Collapsible Headphones

The Sennheiser PX 100 Headphones use dynamic supra-aural mini headphones and a slim, lightweight design to provide convenience and superior sound to the traveler or outdoor user. Sennheiser's duoful diaphragms with spiral embossing provide high-resolution sound, while the twin damping technology creates crisp, fast bass response, helped by 80ppi polyurethane and special perforated elements. The ear cups can be turned 90 degrees and closed up, then put into a rugged carrying case that can fit into a shirt pocket. The included headband padding helps provide the perfect, snug fit for your head.

Technical Details:
Collapsible open-air headphones
Warm natural sound for all types of music
High energy driver system for max performance
Rugged collapsible headphone with case
Super lightweight design



Customer feedback:

1. I was looking for phones that would pack plenty of punch without sacrificing any of the qualities of their full-grown, ostentatious siblings. Anyone who's even moderately serious about headphones knows that the smallest improvements come at a price. In the case of these phones, the cost is easily justified. I've compared them with several portables in the $5-10 range along with some full-sized models weighing in at $50-100. Conclusion: these are worthy of being your "front-line," and perhaps only, pair of phones. They're up to the task of distinguishing each of the instruments in a jazz rhythm section or reproducing the spacious quality of an entire string section. The treble is distinct and "alive"; the bass is, if anything, more than I require (and the PX 200's are supposedly the bass-heavy models). Comfort? They feel the same as any $2 pair of portable headphones--until the music begins, at which point "wearability" is not even an issue.

2. The PX100s are small, unobstrusive phones. They're suited to portable music players (portable CD and MP3 players), as they are relatively efficient and drive well for the most part. They are small and thin, so you won't look like a complete geek or goofball wearing them in public, and they fold up cleanly and could easily fit in a shirt or pant pocket. They also include a carrying case. The build feels flimsy, but they are actually far more durable than one would imagine. The cord is thin, so beware snagging it too sharply, and short (these are not for use with a home system). They are also extremely comfortable, with a large "sweet spot" and light weight.

Sennheiser IE 8 Premium Audiophile Noise Isolating Headphone

The Sennheiser IE 8's audio performance warrants a standing ovation. Rediscover your music collection and tailor it to your aural tastes with a tunable bass frequency response. The customized sonic signature is complemented by a unique fit thanks to the included ear adapters, ensuring perfect fit, guaranteed. This fit isolates the user from their environment, offering passive noise attenuation and the best sound experience. The compact design of the IE 8 works with any attire in any situation. The IE 8 stores quickly and safely in the included carrying case.

Technical Details :
* High-fidelity noise-isolating ear-canal phones with unique sound tuning functionality and interchangeable cable.
* Dynamic speaker systems with powerful neodymium magnets ensure outstanding sonic accuracy and clarity.
* Excellent attenuation of noise (95%, up to 26 dB).
* Extremely durable housing and rugged interchangeable cable.
* Sleek ergonomic design and various sizes (S, M, L) of eartips for a perfect, customized fit.



CUSTOMER FEEDBACK
I have to say that this is a terrific product. The cabling is of very high quality and is replaceable in the event that the cable gets snagged or torn. Sennheiser tries to give the customer a wide variety of eartips, but my package came with one or two tips in which there was only one tip of a particular design and size. To date, Sennheiser did not have extras of the large double flanged earpieces. The Sennheiser staff were very nice to deal with. They sent some replacements,but they did not have any of the double-flanged pieces that are unique to the IE-8.

PROS :
- Incredible and authoritative audio quality.
- Comfortable fit.
- Multitude of ear tips.
CONS :
- Expensive.

Sennheiser HD800 Premier Headphone

The Sennheiser HD-800 is the headphone that has been specifically engineered in replicating the basic acoustic conditions of natural hearing.The HD-800 is the ultimate headphone to deliver nature.
The impression of spatial listening is created by a minute time lapse with which one and the same sound wave arrives at the inner ear. Ideally, the sound waves produced by a hi-fi sound system reach the listener at an angle of 60 degrees. The sound waves do not reach the ear straight on, but through a slightly angled sound front. This causes some of the sound impulses to reach the nerve ends of the inner ear earlier than others. The resulting time lapse is a matter of split seconds, but it is exactly this phenomenon that gives the impression of spatial listening.

Technical Details
* Natural hearing experience - realistic and natural sound field with minimal resonance.
* Biggest transducers ever used in headphones up to today - new innovative dynamic transducer design.
* Uncovered ear cups for acoustic and stylistic reasons.
* Metal headband with inner damping element.
* Specially tuned symmetrical, impedance matching cable with low capacitance.

Technical Specifications
# Frequency Response: 6–51,000 Hz (-10 dB); 14–44,100 Hz (-3 dB)
# Nominal impedance: 300 Ohms
# Sound pressure level at 1 kHz: 102 dB (1 Vrms)
# Max. nominal long-term input power: 500 mW in acc. with EN 60-268-7
# Harmonic distortion: <_ 0.02% (1 kHz, 1 Vrms)
# Contact pressure: approx. 3.4 N ± 0.3 N
# Weight (without cable): approx. 330 g
# Jack plug: ¼" (6.3 mm) stereo
# Connecting cable: silver-plated, oxygen-free (OFC) copper cable, symmetrical, Kevlar reinforced, 3 m
# Operating temperature: –10 °C to +55 °C



The transducer is designed in the shape of a ring. Basically, the larger the surface of the transducer the purer the sound—particularly when it comes to the low notes. A large surface area, however, also generates disruptive spurious oscillation at higher frequencies, so-called eigenmodes. This is primarily due to the fact that conventional-sized transducers do not have a satisfactory way of controlling high-frequency oscillations. The ringed shape of the new transducer effectively solves this dilemma: Its broad area oscillates in an extremely controlled way due to the large coil and the two supporting surfaces. This results in a previously unheard-of degree of freedom from distortion and thus the greatest purity and brilliance of sound.
The ring-shaped transducer utilized in the HD 800 greatly enhances the control of the oscillating surface. This results in a more voluminous sound wave and thus far greater clarity. In a conventional transducer, unwanted spurious oscillation can occur due to eigenmodes. Even improvements such as increasingly sophisticated Duofol laminations are unable to completely negate these physical limitations.
The symmetrical cords are designed with twin-core, high-performance, Teflon-insulated connections on each side. They are additionally covered with high-quality material for better shielding from oscillations caused by ambient noise. The jacks are exclusively produced for the HD 800 in Switzerland and feature gold-plated bunches. Gold has the highly positive property of having a very low transfer resistance, thus guaranteeing excellent contact without interference.
The headband consists of a sandwich design in which a metal layer is covered with several layers of plastic. The high-tech plastic possesses incredible attenuation characteristics and ensures that oscillations are not transmitted to the headphone mountings.The headphones of the HD 800 are only mounted on one side, to make sure they fit optimally over the ear. The relocation of their point of balance towards the back of the head also enhances comfort for the wearer.