Current Line of Headphones
All Grado headphones operate using Grado's vented diaphragm technology, dynamic transducers, open-air, "circled" 40mm driver-oriented supra-aural earcups, and Grado's GS and PS which deploys a larger earcup), an Impedance of 32 ohms, and a Sensitivity level of 98 dB. All Grado headphones have a non-resonant air chamber (with the SR325i having an aluminum version, and the Reference and Statement headphones having wooden versions each), and all Grado headphones use high-energy neodymium magnets for each earcup. All Grado headphones are available only in one color with the exception of the iGrado, available in either white or black. The iGrado use the same drivers as the SR60, but are assembled in China to reduce cost.
The improvements made for early 2009 include upgraded driver designs, enhanced ventilated diaphragms, eight-conductor cable design, and refinements to cup housing, just to name a few. Each product before the PS1000 carries the "i" designation which means "improved" with the exception of the SR325, which carries the "is" designation. Below is a table of Grado's current headphone line-up:
| Headphone Model | Headphone Class | Driver-matched dB | Construction | Earpads | Termination | US MSRP |
|---|---|---|---|---|---|---|
| iGrado | Prestige | 0.1 | Plastic | Comfort Pads | 1/8" (3.5 mm) plug | $49 |
| SR60i | Prestige | 0.1 | Plastic | Comfort Pads | 1/8" (3.5 mm) plug with 1/4" adaptor | $79 |
| SR80i | Prestige | 0.1 | Plastic | Comfort Pads | 1/8" (3.5 mm) plug with 1/4" adaptor | $99 |
| SR125i | Prestige | 0.1 | Plastic | Comfort Pads | 1/4" (6.5 mm) plug | $150 |
| SR225i | Prestige | 0.05 | Plastic | Bowls | 1/4" (6.5 mm) plug | $200 |
| SR325is | Prestige | 0.05 | Aluminum alloy/ Plastic inner sleeve | Bowls | 1/4" (6.5 mm) plug | $295 |
| RS2i | Reference | 0.05 | Hand-Crafted Mahogany | Bowls | 1/4" (6.5 mm) plug | $495 |
| RS1i | Reference | 0.05 | Hand-Crafted Mahogany | Bowls | 1/4" (6.5 mm) plug | $695 |
| GS1000i | Statement | 0.05 | Hand-Crafted Mahogany | Circumaural Bowls | 1/4" (6.5 mm) plug | $995 |
| PS500 | Professional | 0.05 | Hand-Crafted Mahogany/Aluminum | Bowls | 1/4" (6.5 mm) plug | $595 |
| PS1000 | Professional | 0.05 | Hand-Crafted Mahogany/Aluminum | Circumaural Bowls | 1/4" (6.5 mm) plug | $1695 |
In addition to the currently available headphones listed on this table, Grado sells a Headphone Amplifier called the RA1. It utilizes AC, or DC power supplied by two 9 volt batteries (depending on model). It has two RCA connectors and a 1/4" (6.5 mm) jack, enclosed in a solid mahogany box.
Grado also manufactures an alternate headphone line for Alessandro Music Products; a maker of higher-end guitar components. Known as The Alessandro Music Series, these models have roughly the same external appearance with those from Grado, but feature a slightly different printed text and lack the identifying "button" of many lower-end Grado models. The series has said to have been designed for the musician market, and encompasses the entry-level MS-1 (or Music Series 1) with plastic driver housing, the MS2 with aluminum cup and plastic driver housing, and the "professional grade" MS-Pro, which features a mahogany driver housing similar to that of the RS-1.
Read more about this topic: Grado Labs
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