Stefan Mileschin

Another 1080p quad-core Android phone, you say? Well, there's a bit more to it. Launched by BBK spin-off Vivo in Beijing just now, this 5.7-inch Xplay goes one step further than its smaller X1 and X1S cousins by packing one extra audio chip and the OPA2604 operational amplifier from Texas Instruments in order to add extra oomph to Cirrus Logic's CS4398 DAC and CS8422 stereo asynchronous sample-rate converter -- both of which are featured on the X1 series. If you're a DIY audio enthusiast, you might have already tinkered with an OPA2604 while making your own headphone amplifier; so in other words, Vivo is trying to save you the hassle.

Before we dive into the audio performance, let's quickly look at the rest of the phone first. Underneath the 500-nit LTPS display lies a Qualcomm Snapdragon 600 quad-core SoC (1.7GHz, 2GB RAM and Adreno 320 graphics engine), 16GB or 32GB of built-in storage, 3,400mAh battery and NFC. On the back you'll find a Sony 13-megapixel imager next to a pair of speakers (FLAC playback is supported natively), but flip the phone over and you'll be looking at a surprisingly generous 5-megapixel front-facing camera -- much like the one on Oppo's mid-range Ulike 2. Vivo's somehow managed to pack all of this into a 7.99mm-thick body with a screen bezel of just 2.3mm thick (which bests Pantech's thin-bezeled Vega Iron) and a large viewable-to-total area ratio of 75.11 percent. Alas, for 3G there's only WCDMA 2100, meaning the phone may have to rely more on GSM 850/900/1800/1900 or WiFi in many parts of the world. More after the break.

Update: Hands-on photos added below, followed by a couple of video clips after the break.

http://www.engadget.com/2013/05/07/v... ign=Engadget