Limited Edition/specialty Headphones
Most of these headphones are rebranded and/or limited versions of Grado headphones. The Grado HF1 was sold exclusively to the Head-Fi online community, which had a total of 450 original November sales, one replacement (December), seven waitlist sales, three March sales and twenty April sales, each numbered 001–481. RRP for the HF1 was US$200. The HF1 is, arguably, one of the most sought-after Grado headphones. Most contend that its sound stands unique among the models.
In May 2009, the limited edition HF2 was announced, also for sale exclusively to Head-Fi members. The production limit was set to 500 units or however many units sold by the end of July 2009, whichever came first. The 500 units quickly sold out, ending the sales of the HF2 early. It was announced on October 12, 2009 by Todd Green that there were several left unsold, bringing the total number produced to 524. These extra pairs also quickly sold out. RRP for the HF2 was US$429. As of February 2010, there was a run of 26 B-stock HF2 that were released, totalling the production to 550. The B-stock serial numbers began from #550 and went until #575.
The PS1 Pro was a special production order for a German Distributor, and was more expensive than any of the Grado line. A partnership between headphone manufacturer Grado and wireless technologies manufacturer FreeSystems paved way for the FreeSystems headphones. The FreeSystems package included an integrated Grado RA 1 amplifier (as mentioned above), headphones which have a physical appearance similar to that of the Grado PS1, 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.
All headphones have a 32 ohm-Impedance.
| Headphone Model | Headphone Class | Construction | Earpads | Termination | Production Limit |
|---|---|---|---|---|---|
| HF1 | Limited Edition | Plastic and Hand-Crafted Mahogany | Bowls | 1/4" (6.5 mm) plug | 481 |
| HF2 | Limited Edition | Mahogany and Aluminum Alloy | Bowls | 1/4" (6.5 mm) plug | 550 |
| PS1 Pro | Limited Edition | Aluminum Alloy | Bowls | 1/4" (6.5 mm) plug | 250 |
| FreeSystems LE | Limited Edition | Aluminum Alloy | Unknown | Unknown | Never released |
Read more about this topic: Grado Labs
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