These finally, finally arrived - were they worth the wait?
Let's start off with what's different from the X41, XP500 and earlier models - things that can be downright confusing. I'm NOT talking specs, which you can read on your own; I'm talking operability.
(For sake of reference, I've owned the EarForce Deltas (which are remodeled XP500s), the X41s and the earlier analog-version X4s.)
* The Unusual (and Not So Good) *
Unlike earlier Transmitters which were always "On" so long as they were attached to an active USB port and powered on, the X42 Transmitter and its LEDs will turn OFF when you turn off the headset OR if there is no active audio signal for around 5 minutes. (For this latter, the headset will also turn off - this information is hidden at the back of the User Manual in the "Technical Specifications" section - something we never read, right?)
There are two ways to turn the Transmitter back on: (1) power on the headset or (2) unplug/replug the Transmitter's USB connection. (Obviously, turn on the headset.) It takes a few seconds to power all the way back up, which is, again, an issue we never had with the previous, always-on Transmitters.
Frankly, this is a little confusing if you're expecting the X42s (and probably the XP400s) to function the same as previous wireless Turtle Beach models.
Build quality. I hate to say it, but these feel definitively cheaper than ALL of the models I've mentioned so far, especially the XP500 branch. The smaller and very portable X42 Transmitter feels flimsy and delicate. The headset feels like a light, hollow-plastic housing. And out-of-the-box, they're not as comfortable or well-fitting as previous headsets. This may change after a break-in period, so I'll update accordingly.
Paired Out-of-Box? My headset and Transmitter were not properly paired upon first use. Took a minute to figure out how to pair them, but it's something I shouldn't have had to do. The manual itself says they should be pre-paired to work together. Oops!
* What's good - or even great - about the X42s? *
Interference? NONE. Unlike other reviewers, I am NOT having any sound/buzzing issues. As a matter of fact, the X42s have eliminated all of the cracking issues I had with the X41s and XP500s. The sound is super-clear. We run a dual-wireless household here, with 2.4GHz/5GHz active, and the X42s have performed flawlessly. I am VERY happy and impressed by this.
Sound quality? Better. The lack of interference is no doubt at the heart of this, but I can't help but notice a marked improvement.
Transmitter Size? Excellent. Think 'the size of a square hockey puck.' While it feels incredibly delicate, it is SO SMALL compared to previous Transmitters, that you can put it pretty much anywhere. Early transmitters suffered from 'where the heck do I put this thing?'-itis. No more.
* The Questionable *
The Transmitter and USB cable are now hard-connected. I'm NOT a fan of this, as I used to move the Transmitter from one room to another. It was much easier to have two USB power cords, one in each room, and just move the Transmitter between the two. Can't do that anymore. Also, if anything happens to the USB cable, you can't buy a replacement cable. If you're crafty, perhaps you could open the Transmitter and replace the cable if something happens, but there are no obvious open-points on the Transmitter.
No Stereo Output Port? Previous models had a stereo output port, which allowed you to hook up a wired headset. Personally, this will be sorely missed, as I would hook up a wired headset for visiting friends if we were playing late at night, or if the batteries in my wireless headset were running low, I'd switch to wired. But no more.
Missing: An Additional Optical Input. With so many digitally capable audio devices, it's just unfortunate that there isn't more than one optical input. If you've got two of any of the following - Xbox 360, Playstation 3, Cable/DVR, Boxee Box, Apple TV, Google TV, Roku, etc. - you can only hook up one of these to the Transmitter at any given time. Some of these play well via HDMI->optical sound on some televisions and audio receivers (to date, the PS3 plays fine this way, but not the 360), but it's an unfortunate and missed-opportunity for Turtle Beach to make a more functional wireless headset.
* Conclusion *
A competent headset that suffers from change: eliminating inference and improving sound quality comes at the price of strange power issues and unexpectedly poor build-quality; a smaller form factor is offset by loss of functionality.
Whether or not the X42s are right for you will depend on whether you experienced interference with earlier 2.4GHz models. If you did, these should be a huge improvement.
If you've ever owned (touched or even seen) the XP500s, you'll be severely underwhelmed by the X42s sturdiness. For everyone else, they'll feel hollow.
If you've never owned a Turtle Beach surround sound headset, you won't be thrown-off by the changes. If you have, just be aware of the changes and differences, and set your expectations accordingly.
Personally, I haven't decided to keep them or send them back. I still have time to decide. Perhaps something more impressive is on the horizon. Your move, MadCatz?