On-ear open-back · 32 Ω · Reference tier

Grado SR325

The metal-bodied Prestige Grado — the house sound with more punch and more treble bite.

Frequency responseRaw · L/R averaged

Rig: Head Acoustics HMS II.3Normalized 0 dB @ 1 kHz

TypeOn-ear open-back

Impedance32 Ωeasy to drive

Sensitivity~99 dB / V

Needs an amp?Nosource quality over power

SignatureBright, punchy, metal-bodied

Our take

The SR325 pushes the Grado signature harder: strong midbass punch and an aggressive, detailed treble in an aluminum housing. Exciting and forward, occasionally sharp — a treble dip via EQ keeps the energy without the glare. Still trivially easy to drive.

Hear it tuned to your taste in Attune Compare it in the graph toolFree while Attune is in beta · macOS

Measured by Jamey Warren on a Head Acoustics HMS II.3 artificial head — raw response, left/right averaged, normalized to 0 dB at 1 kHz. From the Sonic Temple Archive(2008–2014, one unit per model). Honest limits: seating variance runs ±0.4 dB in the mids to ±3.9 dB above 12 kHz, and open headphones read bass-light on this fixture — don’t read fine treble detail as settled. How we measure →

Common questions

Straight answers — the same ones our measurements support.

Is the SR325 bright?

Yes — a forward, energetic top that can get sharp. EQ tames it while keeping the punch.

Does the SR325 need an amp?

No, it is easy to drive; source quality matters more than power.

If you like the SR325

Close on the graph, or a deliberate step in one direction.

Cheaper sibling