Review: Sennheiser RS 120 II Wireless Headphones https://en-au.sennheiser.com/wireless-headphones-stereo-rf-rs-120-ii Note that in the stock image below, the headphones are mounted backwards for some reason. You can see by the curves that they actually sit more naturally and compactly the opposite way around, although they will charge in either orientation. Preface: I'll begin this review with a disclaimer. I appreciate good music. That said, my family doesn't like me playing it loud in the house. Consequently, the best stereo I own is in my car, which is predominantly Focal. Its very high powered, with a great full sound with excellent sound staging consisting of Focal splits in the front, with Focal's trademark extremely bright trebles and cracking mids. The rear deck is used mostly as fill, and I have the speakers biased towards the front 70-30. The rear deck has a pair of Alpine Type R Coax's which have very strong, quite deep mids. The front speakers are 170Wx2 RMS, the rear speakers share an Amp (both Amps are Focal 170Wx2 RMS - after bridging - they are actually 85Wx4 RMS) with the subwoofer. The rear speakers receive 85Wx2 RMS, although with the speakers biased heavily towards the front, I'll throw an uneducated guess out there and say that I am actually using perhaps 25W x 2 RMS of that power for the rear speakers. That takes care of 2 of the 4 channels on the second Amp, the other 2 provide a bridged 170W RMS signal to a Pioneer 12" subwoofer, in a proprietary box. So, that's my benchmark. I'm by no means an Audiophile in the strictest sense of the word, although in my younger days I did possess a set of AR speakers with a Hafler amp and Preamp, with a Linn-Sondek turntable, so I have owned and appreciated high end sound. In their day, that system was worth as much as a decent secondhand car. When it comes to cans, I've never owned a DAC or a high end set of headphones. These entry level Sennheisers are in fact the best (but not the most expensive) cans I have ever owned, although I've certainly listened to some very high end stuff and been suitably blown away by the sound, so I do at least have some point of reference in that respect. My source is the onboard sound on my ITX B350 AM4 motherboard. This review is biased towards HiFi stereo, not gaming. I couldn't and won't offer any sense of the heightened spatial awareness that is required for gaming, as I don't game. I can and will offer an opinion on spatial awareness in movie playback however. Comfort: Comfort is excellent. Clamping pressure is light to medium, and with the 3 very different size heads in our house, all were able to find a comfortable fit very easily. Although the cans do not swivel horizontally at all, they do have ample swivel vertically. I find them to be quite light, my wife thinks they are heavy, She however never uses headphones at all, so that could explain that opinion. My stepdaughter finds them to be a comfortable weight though, and although she uses only low end in-ear headphones (such as provided with low end smartphones), she had no problem with the weight, fit or comfort. These are on-ear headphones. I prefer these, as I find over-ear cans to be hot and sweaty, and I hate putting things in my ears so would never buy in-ear headphones. If I have a complaint at all with the comfort of these cans, its that the pads are constructed of some kind of open cell foam which after some time can be a little scratchy on the ear. I think I'd prefer some kind of fabric instead. Practicality: Practicality is insanely good IMHO. With a run time of about 20 hrs, they have no difficulty in hanging in there for the longest of sessions. The supplied charging cradle/transmitter is very easily used, and provides a very compact and effective way of both storing and charging the cans. The manual says that a full recharge of the supplied NiMh batteries is 18 hrs, which seems a terribly slow charge, but as they are on charge whenever not in use, this is, so far for me, a total non-issue. On the left ear sits an off/ switch. One annoying thing is that when you switch them on, initially they begin with a strong hiss. Until a sound or video file is opened, this hiss will continue, until about 30 seconds later, when if a source file is not opened, they will automatically shut down. Similarly, if a video or music file ceases playback, after about 30 seconds they will begin hissing again for 30 seconds or so before completely shutting down after a further 30 seconds or so. On the right lower is a tuning dial. It only takes a second to dial them into the source. Why a tuning knob is necessary is something I don't understand though, since the source wireless signal is the transmitter that comes with the headphones. If I had to take a guess, its so that you can use an alternative transmitter if required, such as a phone. Since these are not bluetooth however (they use an FM signal) I'm not sure what phone or common device one would be able to connect to. I was initially concerned that this dial would regularly be moved instead of the volume dial which sits on the right upper, but the volume dial comes easily to hand, and I have not at this point managed to accidentally spin the wrong dial. The charging cradle has a pair of standard keyways on the back surface for wall mounting. I inserted a couple of screws into the side of my wooden computer case, and drilled a hole through the case for the source cable and power supply, and the cradle/transmitter fits snugly and securely to the case. The cradle is designed in such a way that the cans drop easily onto the cradle without actually touching the case, or protruding beyond the cradle/transmitter. By far the easiest and most compact charging and storage system I've had up till now. The cables can also be routed down rather than through the wall though of course, so they can be wall mounted if desired. They are charged by a very small wall wart, with a removable jack which plugs into the rear base of the cradle/transmitter. Signal is provided by a pair of 3.5mm jacks, which I use via the provided 2 into 1 adapter into the speaker jack on the back of my PC. I don't have a headphone jack due to my having a custom case with no dedicated headphone jack, and I wouldn't use it if I did anyway, since plugging the transmitter into it would disconnect my speakers, which are currently using the passthrough audio out jack on my monitor as a source, and I simply select the source on the taskbar rather than having to plug jacks in and out. A 3.5mm to 6.5mm adapter is also provided, although I have no use for it. The cradle/transmitter end is also a removable (3.5mm) jack. Of course if you are using an external DAC, you will use the separate jacks rather than the 2 into 1 adapter necessitated by my source. These cans are not very portable though, if you want to pack them. They do not fold at all. I'd recommend them only for home use. The wireless range is spectacular. With the transmitter on one end of my house, and 4 walls between the transmitter and the front door, I can go through the front door and virtually to the end of my 65m driveway with no detectable loss or degradation of signal. Previous headphones I have used begin shitting themselves immediately I pass through my solid steel front screen door. I can also take these cans out to my galvanised shed in the back yard, close the door so I am completely surrounded by steel, and notice no difference in signal quality whatsoever, about 20m from the transmitter in that case. This is also the only set of cans I have ever owned which work in the shed with the door closed. Sound: The first word that comes to mind is clarity. Damn these things are good. No muddiness, no frequency bias. They are just crystal clear throughout their range. Bass is perhaps a little lacking. If I take into account the 28Hz lows of my 12" car sub, and try to guess what the best lows these cans can provide, I'm going to go with about 60Hz. The specs claim a frequency response of 22Hz-19500Khz, but they certainly cannot provide 22Hz to the ear. Perhaps I'm being unrealistic hoping for better for a relatively cheap set of on-ear headphones, but yeah, more bass would be nice. Still, the clarity of these cans just make them so nice to listen to, I actually don't care much. Stereo separation is excellent. They also provide nice bright trebles, cracking mids, and sufficient bass, and no weak spots at all all the way down to the bass floor. I've been playing a wide range of music on them, including ACDC, Pink Floyd, Tracy Chapman, Supertramp, Metallica, Deep Purple, Suzi Quatro, The Cranberries, The Doobie Brothers, classical, jazz and pop. I've even tried them with Hermans Hermits and a few other 50s/60s bands and some of my step daughters country and western crap. I haven't found a genre yet which they sound bad on. I'm listening to ZZ Top as I write this review, sounding good. Spatially, they work well for video. I can hear footsteps behind me, cars approaching from behind, passing me and disappearing into the distance ahead of me, etc, quite well. How accurate this spatial awareness is for gaming though I am unable to comment on. Perhaps not as good as a pair of dedicated gaming cans, I am not in a position to judge, but for video, they are very good. Volume wise, they are certainly as loud as you could reasonably want. You couldn't listen to them at full volume for extended periods, put it that way. When volume is high, there is significantly more external sound bleed than previous cans I have owned. This is probably due to the very open on-ear foam design, as opposed to the cups I am used to. My wife has commented that she can certainly hear my music more than with previous cans, when at high volume. There is no noise cancelling or other trickery. For my purposes, this suits me well, as I prefer being able to hear people talk to me when volume is low. At more than quite low volume though, the immersion is sufficient to make noise cancelling completely unnecessary IMHO. Value: These were $147 at Officeworks. They punch WAY above their weight in this price range. The construction appears very decent quality, the charging cradle/transmitter is great, and the sound is very, very good considering the price. Conclusion: I would have no hesitation in recommending these to anyone but the most committed audiophile as the perfect set of wireless headphones for home use. I'm going to subtract a point for the annoying hiss when they have no source file playing, and another for the slightly scratchy foam earpads. Given the low price though, that's about all I can really fault them for, so they earn an easy 8/10.