Koss QZ/900 Headphones

The QZ/900, the addition of the line and calmly Koss adds a new level of performance and comfort. The electronics inside each package QZ/900 Koss is designed to control noise outside of a microphone in a manner appropriate to each ear cup. After this input can be considered as noise, Koss QZ/900 circuit a sound wave, the 180 degrees out of phase with the input signal. The result is what engineers term "Ground Zero" on the eardrum. Ie, sincess most of the mouth of the diversion of a plane at low frequency, mower, blower, or even the sound of an office can be drastically reduced. Once the QZ/900 reduction of external noise, The sound of Koss has the stage. Bass rich and sparkling high-stereo all want. In fact, the ability to suppress the noise is so good and that QZ/900ROUVER less to increase the volume of eamplificatore piccolo in portable electronic devices. This means indicates more efficiency, and the distortion Leartes the excitement of live performance. The QZ/900 works with or without active noise cancellation circuit. A cable is a practice in line volume control and a standard AAA battery provides approximately 50 hours of active noise-demolition.

Koss PortaPro Headphones Review

With so many funky headphone designs the market today, it is increasingly difficult to choose one to buy. Instead, show the latest snazzy set of cans, you must return to the days around the PortaPros Koss. These headphones are the ultimate in retro chic and guaranteed to add comments, but not the feeling that the beautiful symphony of sound flooding your ears. For € 50, it is difficult, another giocorivali sonidoy the quality of the progettazionee.

The first thing you notice is the PortaPros seems slightly from 1980. E ', because they are - Koss released these exact headphones in 1984 and has become so popular that Koss has not changed in 23 years. These headphones to the same design both internally and externally. The ear cups are connected to the head by a thin strip of steel that fits that with two sliders, and loosen the tension. A voltafino elPortaPros actually very comfortable - they are the pen andthe extra cushion on the ear pads prevent slippage of the helmet. The comfort is a step, which Koss calls their "comfort zone". This feature has three mechanical settings that allow you to power the headset on your head. The disadvantage is that there is no way to head into the lock and the slider to adjust capellidi in and out of them. SESA also this problem if you want the helmet is still around his neck - The band immediately reinforced and practice, they suffocate.

On the positive side, even PortaPros CAP and clip together for relatively convenient storage. The design of the PortaPros is broken or lost. Not everyone in the design, but in reality, the way the headphones look for love. Sugar lumièrely extended material ricordinirs a time to recall, when Marty McFly and Tron palabrald said Lobotes and discuss with a 23-year gewidmet following?

It appears from the A-la-to, the real reason PortaPros remain classics (and underestimated), it is because of their fantastic sound quality. Also, remember that this was decades before studio-quality sound is the isolation of headphones for the consumer in the market, so that certainly does not block the most noise ambientaleant. He also began to losses in the third sound of our brand on the tape bar for your iPod, but we are not überrascht to hear for the planning, not just be sure to make your highly neighbors. But beyond that we have very few complaints.

In our audio test, we compared PortaPros with another set of folding cartons, Sennheiser PX100miniheadphones. We have good things to say about the PX100, but was finally satisfied with the absence of the high range. But we blew PortaPros simply on their ability to achieve and maintain a highHEN quality Bandn.Estamos pumped more songs in a wide range of genres through the headphones and each a focus in the midrange sound with detailed resolution in the high and very thick, stirring têtebas. Our MP3 "fatalistically palmistry" by Why? much better with the sounds and PortaPros clear distinction between the individual instrument of balance, while maintaining the realism of the sound. According to Koss, the sound output is for the iron-boron magnets neodymium rare earth structures "Which ofrecenunFrequenzbereich 15-25,000 Hz, which coincidentally Manufacturers jargon, but the truth is that the sub - $ 50 range, the headphones are the Koss PortaProsà struggle.

If all this were not enough, a couple that Koss offers a "no questions domandezioni lifetime warranty on PortaPros. If something happens to them during normal use, Koss will send you a new pair of shipping ($ 6.00). Now it's music to our ears.