Signature HP100 SE

The HP100SE is simply a great headphone—cost no object. It is as fast and realistically resolving as anything on the market—no hyperbole.
It has that characteristically “assertive” low-mid treble, but the quality of those highs is first rate and never unnatural.
Bass shows very little roll-off—a small, gentle attenuation below 30 Hz that leaves the fundamental tone clear, textured, impactful, and in tune. Compared to the Abyss 1266, Susvara Unveiled, and Utopia OG, it goes just as deep in practical terms, but with a more accurate balance of fundamentals, harmonics, and dynamic texture—the kind you actually hear from instruments in a live space.
Spatial cues are elite. As these have broken in, they’ve audibly smoothed out, and what’s emerged is serious transparency: room resonance, partitions, venue size, player positioning (including cues to the angle of a piano with respect to the rest of the soundstage)—all rendered clearly, and only as forward as they should be. On top-flight recordings, images are life-sized but in proper perspective and proportion, something that is not the case in many other TOTL cans. The Susvara Unveiled, for example, can spotlight unnaturally large, hyper-delineated but overlapping images that crowd the listener. By contrast, the HP100SE presents a coherent, dimensional space. Imaging is fully 3D—height, width, placement, instrument size—and even micro-movements (a horn player leaning in and back) come through with ease.
This is also a phenomenal rock ’n’ roll headphone. You can think of it as the closest dynamic-driver analogue to the big Abyss: deep, impactful, harmonically rich bass, with near-ideal attack, bloom, and decay.
It separates individual lines in the mix beautifully, but still hits with full force—nothing feels dissected or thinned out. The bass drives the music exactly as it should, with enough depth and texture to feel, not just hear. It won’t flatter bad recordings, but it absolutely rewards good ones.
These are fun. They groove. They retain everything Grado lovers value, while competing directly with—and often exceeding—far more expensive flagships in the usual audiophile categories. I’d still dial the treble peak back just a touch—it isn’t necessary—but there’s nothing harsh or unpleasant here. This is one of the most resolving “speakers” I’ve heard, yet it delivers more depth and visceral enjoyment than something this analytical has any right to. Yes, we can analyze—but maybe after we’re done enjoying the music.
The stock cable is excellent—supple, well-behaved, and sonically neutral. I swapped in an Arctic Apeiron and like it, but that’s personal preference. The stock cable should satisfy most, including those wary of older Grado designs.
At $2,500, this may be the bargain of the millennium. The usual summit-fi suspects are not clearly better in most meaningful ways—and in some respects, this is simply better.
If this is where Grado is headed, they’ve done more than refine an already important and
distinctive, musical house sound—they’ve broken out of it into something evolutionary. This is a genuine step forward, and a real achievement. I couldn’t be happier.

This is my first set of high end phones and I am very pleased. I use them for music production and can hear everything I was missing. Only wish I had them sooner.

Imagine a Grado Headphone that did it all:
The energy of the SR235e
The soundstage of the PS2000e
The warmth of the GS3000x
The precision of the SR1x
The bass of the PS500e

We don't have to imagine it anymore. We don't have to compromise when choosing a Grado headphone anymore: HP 100 SE is Master Control across the entire frequency range. Simply the best headphone I've ever heard in my life. And I've heard quite a lot of them!

HP100 Se pay homage to Grado tradition but at the same time redefining the limit of critical listening. Detailed, powerful, these headphones bring life to the music in an almost unbelievable way. Only improvement I would suggest, a more padded headband would add some comfort during long listening sessions.

If engagement with your music is your objective the Grado Signature HP100SE is most deserving of
your audition. They are easily competitive with other TOTL offerings (think Focal Utopia and Audeze
LCD5) and indeed outperform these with respect to soundstage size, depth, frequency range and
dynamics. The Grado’s are very easily driven and also scale beautifully when driven by serious
Amplification such as the Feliks Audio Envy or Questyle CMA 800R.
In short, audition these Grado,s before paying more for other TOTL headphones; you will not regret
doing so.