Transducer Type:  dynamic

Operating Principle: open air

Frequency Response:  18-24

SPL 1mV:  98

Normal Impedance:  32ohms

Driver Matched dB:  .05

Features:
Vented diaphragm
Aluminum air chamber
UHPLC copper voice coil wire
UHPLC copper connecting cord

"This headphone has something magic: a rare musicality that preserves the natural elegance of the music. The medium is refreshing, natural and sensual. The richness of the harmonics in the medium pulls you in. The instruments have a credible texture. The spectral balance is good. The timbres are rich and at time exceptional. The definition is flawless; the music keeps its nuances and richness of expression."

-Diapason magazine / France

"The retro design makes these headphones look like they'd be more at home reproducing Mozart than pumping out Jay-Z. But looks can be deceiving: The gold colored cans churn out unrivaled sonics no matter what's sent through them. They produce strong, accurate bass, warm and natural mids, and crisp clean highs with almost no tonal coloration. They're impressively lightweight..."

-Chuck Tannert / Penthouse magazine

HI-FI Choice: "…the degree of insight these headphones offer into sounds is really very impressive. This is high quality music reproduction, thoroughly deserving of serious attention."

-Richard Black / Hi-FiChoice magazine

"...speakers of similar sonic ability as the 325i would set you back at least three grand"

-What Hi-fi

"What you need is a serious set of cans to do justice to your music and what better way to enjoy pristine hi-fidelity than by using staunch traditionalist Grado’s note-perfect SR325i earmuffs"

 -ARENA / Style For Men – Magazine

"…the engineer I assisted preferred the Grado’s diamond-like “clarity and cut” to the sound of the Sennheiser HD-650s."

-John Marks / stereophile, vol.28 no 6

"I just purchased the SR325i and am amazed at the fidelity. According to everything I read, I would not be able to discern between the SR60 and SR325i without a headphone amp. I strongly disagree; I can hear an extreme difference. Don’t get me wrong, I love the 60s, but the 325i is awesome. Now, I need to purchase your amp!"

-Chris Neuman

HI-FI Choice:  "I'd encourage anyone who wants to escape the typical, in yer face, cheap can sound to listen to these  Grados."

Winner of Audio Video's "GRAND PRIX AWARD"

"Of all the Grado Prestige headphones I've heard, the SR325 is my favorite!"

-Audio magazine / Vol. 82, No. 6 / John Gatski

"The SR325s are easily the flattest, most accurate sounding phones tested, for critical monitoring, the Grados are hard to beat. Of all the phones tested, theSR325s were the only headphones I felt trustworthy enough for mixing."

-Pro Audio Review / Vol. 4, No. 6 / Loren Alldrin