- quality materials;
- comfortable secure fit;
- good sound insulation;
- the neutral, balanced sound throughout the range.
- lack of ventilation;
- demanding on the power of the sound source;
- distortion at high volume.
Despite the abundance of professional headphones, the KOSS line includes the PRO3AA model, which has been an inconsistently high demand for three years. Let’s see what is unusual about this model.
Design, comfort, and appearance
KOSS PRO3AA stands out from the general concept of KOSS headphones in this price range (about 30 to 33 dollars). In this model, everything is done as if the designers had a desire to wishful thinking.
The cups are made in the color of aluminum, and the leatherette on the ear cushions resembles natural leather.
Nevertheless, we must pay tribute to the manufacturer, all finishing materials are very high quality and pleasant to the touch, which is important for headphones of this class. The steel headband plate is covered with soft plastic, which significantly increases the wearing comfort of the KOSS PRO3AA, and the ear cushions not only reduce the noise level but also increase the wearing comfort of the KOSS PRO3AA. There is also a definite disadvantage – the lack of good heat exchanger (ventilation). Ears overheat very quickly and, after just a couple of hours, they want to be removed.
Sound quality, features, nuances
An ultra-light induction coil with a neodymium magnet acts as a modulation of the audio signal. The response speed of such a system is 0.0001 seconds, which makes it possible to react almost instantly to changes in signal modulation. A 35 mm diameter membrane covered with a titanium layer for better resonance is used as a sound emitter. All this allows the KOSS PRO3AA to operate in the frequency range from 15 to 20,000 Hz. Moreover, it is not just to build a full-fledged sound range, but to change it almost instantly in accordance with the incoming signal. The sound range is evenly distributed among all keys. The KOSS PRO3AA does not have a pronounced specificity of emphasizing a certain type of frequencies, which makes these headphones versatile.
KOSS PRO3AA is not suitable for all types of audio playback devices. The impedance of the model, 60 ohms, will allow you to listen to music only from a device that is capable of delivering a sufficiently powerful output level and using an external EQ. This is especially true if you intend to listen to tracks of a certain style.
If you listen to club music with a lot of bass sounding, drum solos, then you will be somewhat frustrated by the sound of the KOSS PRO3AA. The thing is that in the range from 20 to 100 Hz when the volume rises above 80%, the membrane begins to resonate and rattle, and the sound picture will be very unsatisfactory.
If you like to listen to symphonic, instrumental music, vocals, then KOSS PRO3AA will help you to fully reveal the sound of these works or performers. The point here is again in the membrane of the headphones. The 35mm diameter works best in the midrange, which allows the music to be reproduced as accurately as possible. As for the high frequencies, especially the solo parts of guitars in rock compositions or the sound of violins in classical music, there is also no reason to call them unnatural. Everything is very balanced and at the same time realistic.
But a minus in sound is born when you make the KOSS PRO3AA play complex pieces with a lot of sounds. The KOSS PRO3AA simply cannot cope with the task assigned to them. Both low frequencies and high frequencies will be cut off, only the midrange will remain intact, but they will sound very unnatural and even out of tune.
KOSS PRO3AA are suitable only for a narrow direction of music styles, and if the music track is not overloaded with various singles and sources of all kinds of sounds.
If we put aside some of the disadvantages in comfort and sound, then you can understand why the KOSS PRO3AA is popular and in demand. Although, to be honest, there are more attractive models on the market for the same money.
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