Grado

Grado Labs is a popular open-air headphone manufacturing company that also produces phonograph cartridges. The company’s open-air headphones, supra-aural, high-fidelity headphones and other products have received rave reviews from many audio-related publications. Till date, the company holds around 48 patents for its exclusive products. Its headphones are primarily classified into categories which are different from each other on the basis of price, the most expensive of which is the Prestige Series. This range includes models such as iGrado, SR 60, SR 80, SR 125, SR 225 and SR 325i. Coming a close second is the Reference series which includes models such as RS1 and RS2. The Statement Series has a single offering, which is the GS1000.

Although the quality of Grado is way above the standard headphones available in the market, the company prefers to maintain a low profile without any "advertising" of its products. As such, it relies on word-of-mouth publicity. Grado also manufactures three models of headphones for Alessandro High-End Products, namely Alessandro Music Series One, Two and Pro. All headphones manufactured by Grado have typical attributes and technologies like vented diaphragm technology, dynamic transducers, open-air, an Impedance of 32 ohms and a Sensitivity level of 98 dB. Moreover, these headphones have a non-resonant air chamber; they use high-energy neodymium magnets for each ear cup. All the headphones, except Gradoi, are available in a single color, either black or white. The company has also enhanced its product line with amplifiers for headphones.