One of the most bang-for-the buck Sennheiser audiophile-grade headphones ever made. Below are some of the best reviews online.
From dansdata.com
The HD 555s are open, circumaural, full-sized headphones. That means they let outside noise in and inside noise out (so they’re not suitable for use in noisy environments, or near people who don’t want to hear a tinnier version of what you’re hearing), and they’re comfortable even if you wear them for a long time (because their ear cushions sit around your ears, not on top of them), and you’ll look a bit stupid if you wear them in public (because they may be all sleek and sci-fi looking, but they’re hardly small enough to hide under most hairstyles).
If you’re looking for slick full-sized ‘phones, the 555s fit the bill. Surprisingly strong one-sided headband hinge connection? Check. Single-sided cable input? Check. Shiny black metal grilles, not many corners, tasteful silver-grey highlight plastic? Check, check, check.
The silver “Sennheiser” logo on the headband’s a bit big, if you ask me, but if you often find yourself having trouble remembering who made your consumer electronic goods, I’m sure you’ll find that helpful.
More practically, these headphones have a high quality ratchetty size adjustment that should let them fit heads from somewhat-small to downright-enormous. They have a quite ample ten foot non-curly cord. And their headband is tough yet twistable, which should make the headphones more resilient, and also makes it very easy to pull one ear-cup off your ear without budging the other one.
Like a lot of full-sized headphones these days, the HD 555s are quite light; Sennheiser quote a weight of 260 grams (9.2 oz) without the cable. I think that’s actually a bit of an overstatement.
The HD 555 earpieces are quite distinctive. The drivers inside are angled backwards – the better to shoot sound straight into your ears – and there’s a funny little wedge-shaped “surround reflector for an extremely spatial sound reproduction”, too.
This design apparently has something to do with Sennheiser’s “Eargonomic acoustic refinement” system. Well, that’s what their German site calls it; their US branch doesn’t have the courage to overrule their spellchecker. Ah, marketing.
The 555 cushions are covered with finest black velvety stuff, which is good, but they’re a bit on the firm side. Together with above-average pressure from the headband, these headphones end up among the most comfortable I’ve worn, but not very near the top of the list.
I’m happy wearing them for hours on end, though; I’m just happier wearing my softer and squishier HD 590s.
This unnecessarily arty image serves to convey the fact that the HD 555 cable terminates in the quarter inch plug that’s used by full-size hi-fi gear, not the eighth inch plug used by portables and computers. All full-sized headphones used to have the bigger plug, but most manufacturers have gone with the smaller one these days.
You get an adapter with the 555s, of course, but a quarter inch plug adapted down to eighth inch is cumbersome. You end up with the thick end of three inches of rigid plug body hanging off the poor little eighth inch connector, with the weight of the cable on the end of that considerable lever. It doesn’t take much of a tug on a setup like that to wreck the plug, the socket or both.
For this reason, HeadRoom recommend eighth-inch-users buy this floppy Grado adapter to replace the solid Sennheiser one. At $US14.95, that may be Grado’s cheapest product (though their entry level headphones are surprisingly cheap), and equivalent items are a bit hard to find so you might as well buy it.
Anyone handy with a soldering iron can, of course, knock up a functionally identical product (provided you’re not too worried about Martians) for a couple of bucks.
Oh, and there’s this. Sennheiser’s been moving to economical clamshell packaging for a lot of their headphones lately, but the HD 555s come in an imposing gatefold box that looks as if it ought to have a Star Wars DVD set in it, or something.
What they cost
The HD 555s are mid-priced headphones, by audiophile standards at least. They can be yours for $US149.95 ex shipping from HeadRoom (list price is $US170). And here in Australia, Aus PC Market are selling them for $AU231 only $AU187 including delivery anywhere in the country (Aussie shoppers can click here to order).
There are some weird pricing shenanigans going on for some Sennheiser products locally, but the 555s have escaped that noose. Their delivery-included Australian price is only around 10% higher than their US price, once you run the currency conversion. There is, therefore, no reason for Australian buyers to even consider ordering these ‘phones from overseas, unless local stocks dry up again. This site lists Sennheiser HD555s for $99.99 – $119.99.
Listening
The HD 555s aren’t the best headphones I’ve ever heard – that accolade falls to some Beyerdynamic heavyweights that cost more than twice as much locally – but they’re darn good. Sennheiser’s claims about very low colouration and extended frequency response sound true to me. The 555s have clear but not overemphasised treble, no bad behaviour in the midrange, and kickin’ bass for those moments when it matters, without so much thump that it swamps everything else.
I trundled through my usual classical, jazz, rock and electronic test tracks, and then made with the random play. The 555s did a good job by anyone’s standards on everything, and a great job when you consider their not-so-scary price tag.
I still prefer the sound of my HD 590s, which don’t get a lot of love from the headphone cognoscenti but have a wider soundstage (weird surround reflectors or no weird surround reflectors) and more treble clarity, I think, than the 555s. The 590s cost more, of course, so you’d want ‘em to sound a bit better.
And, as I said, the 555s aren’t quite as comfortable as the 590s.
But if someone took my 590s away and forced me to use the 555s, I’d be perfectly happy.
The HeadRoom test results for the 555s show a well-behaved frequency response plot with solid results down to 30Hz (not quite the 15Hz Sennheiser glibly claim, but more than enough for pretty much every purpose), a slightly mountainous impedance plot that shouldn’t cause any problems, and the crummy isolation common to all open headphones.
Gee, I’m glad you can buy these things again.
Because, you know, you probably should. They’re really good-sounding, comfortable cans that don’t cost a ton of money.
For this money, I doubt you can buy a better headphone anywhere. Highly recommended.
Click here for more Sennheiser HD555 reviews.
