Even the Oppo Finder has a 6.65mm thickness and yet lacks a 3.5mm headphone jack, whereas BBK's thinner phone has one.

ENGADGET: BBK's Vivo X1 is a phone for audiophiles, packs high-end DAC and Beyerdynamic earphones

One such product is the BBK Vivo X1, a phone that was recently launched in China but hasn't seen any time on this side of the Pacific.

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No, this isn't the world's thinnest phone thanks to Alcatel and BBK, but Oppo's recently announced R809T is still a seemingly attractive device judging by the above official image.

ENGADGET: Oppo's 4.7-inch, 6.93mm-thick R809T pays homage to the Finder

The Vivo X1 may just be available for pre-order now, but the folks at BBK couldn't help but tease the highlights of its next-generation device already: bezel-free design, 1080p display, big battery and 13-megapixel camera.

ENGADGET: BBK's Vivo X1 is a phone for audiophiles, packs high-end DAC and Beyerdynamic earphones

We've never paid much attention to BBK's phones in the past, but today, this Chinese company -- who's actually the creator of the Oppo brand for the Western market -- announced a rather interesting Android 4.1 device.

ENGADGET: BBK's Vivo X1 is a phone for audiophiles, packs high-end DAC and Beyerdynamic earphones

The idea of this Vivo X1 is that BBK wants to take audio very seriously on its new flagship phone, which is why it's been given a Cirrus Logic CS4398 digital-analog converter plus a CS8422 sample-rate converter -- a combo that's seemingly popular amongst Hi-Fi connoisseurs and manufacturers.

ENGADGET: BBK's Vivo X1 is a phone for audiophiles, packs high-end DAC and Beyerdynamic earphones

Launched by BBK spin-off Vivo in Beijing just now, this 5.7-inch Xplay takes one step further from its smaller X1 and X1S cousins by packing one extra audio chip, the OPA2604 op amp 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.

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