|
|
发表于 2006-8-29 07:18:33
|
显示全部楼层
Grado HF1
Tranducer type: dynamic
Operating principle: open air
Normal impedance: 32 ohms
Construction: Plastic and Hand-Crafted Mahogany
Earpads: Bowls
Termination: 1/4" (6.5 mm) plug
About: Limited edition production of 451 pairs sold exclusively to the online headphone hobbyist community, head-fi.
Grado PS1 Pro
Tranducer type: dynamic
Operating principle: open air
Normal impedance: 32 ohms
Construction: Aluminum Alloy
Earpads: Bowls
Termination: 1/4" (6.5 mm) plug
About: Special production for a German Distributor, limited to 250 units. Two units were available per month to the US via www.toddthevinyljunkie.com for a limited time. The Grado PS 1 is the most expensive of the Grado line. It retailed for around 1400 US. Its 1250EUR price in Germany was consistent with the distributor pricing for the current top of the line model - the RS-1's.
Free Systems Grado Limited Edition
Tranducer type: dynamic
Operating principle: open air
Frequency response: 20 Hz to 20 kHz
Normal impedance: 32 ohms
Construction: Aluminum Alloy
About: A partnership between headphone manufacturer Grado and wireless technologies manufacturer FreeSystems, the FreeSystems Grado Limited Edition was a proposed hifi wireless headphone system which included an integrated Grado RA 1 amplifier (as mentioned above), headphones which have a physical appearance similar to that of the Grado PS 1 (as mentioned above), and a Free Systems infra-red transmitter and receiver. The RRP was $3,800. The system was intended for release by February 2002, but was never released. [1]
Source: FreeSystems Grado LE
Alessandro Music Series One
Tranducer type: dynamic
Operating principle: open air
Frequency response: 20hz-22KHz
SPL l mV:100 dB
Normal impedance: 32 ohms
Driver match dB: 0.1
Construction: Plastic
Earpads: Comfies
Termination: 1/8" (3.5 mm) "mini" plug with 1/4" adaptor
About: The Alessandro Music Series are produced by Grado for guitar and guitar component company Alessandro. They are similar in appearance to normal Grado models, except with different text and they do not have a "button" on the screen to indicate model number, like Grado headphones do. They are said to be made for the musician market, and are currently still in production.
Source: Alessandro High-End Products
Alessandro Music Series Two
Tranducer type: dynamic
Operating principle: open air
Frequency response: 18 Hz to 24 kHz
SPL l mV:100 dB
Normal impedance: 32 ohms
Driver match dB: 0.05
Construction: Aluminum Alloy
Earpads: Bowls
Termination: 1/4" (6.5 mm) plug
About: The Alessandro Music Series are produced by Grado for guitar and guitar component company Alessandro. They are similar in appearance to normal Grado models, except with different text and they do not have a "button" on the screen to indicate model number, like Grado headphones do. They are said to be made for the musician market, and are currently still in production.
Source: Alessandro High-End Products
Alessandro Music Series Pro
Tranducer type: dynamic
Operating principle: open air
Frequency response: 12hz-30kHz
SPL lmV:98
Normal impedance: 32 ohms
Driver match dB: 0.05
Construction: Hand-Crafted Mahogany
Earpads: Bowls
Termination: 1/4" (6.5mm) plug
About: The Alessandro Music Series are produced by Grado for guitar and guitar component company Alessandro. They are similar in appearance to normal Grado models, except with different text and they do not have a "button" on the screen to indicate model number, like Grado headphones do. They are said to be made for the musician market, and are currently still in production.
Source: Alessandro High-End Products |
|
