High-quality music distribution is a hot topic, such as Apple Music, which has started distributing music in lossless and high-resolution, and Amazon Music HD, which has reduced the price of high-resolution distribution in response to this movement. Many people are already enjoying these services on their smartphones. However, even though the music is delivered in high-quality lossless/high-resolution, "I only use Bluetooth earphones that lose information during transmission" or "I want to use wired earphones, but my smartphone does not have earphone output in the first place." There will be many people.
As a solution, you can buy a new smartphone or use a dedicated portable audio player that can also use music distribution services. It is also true that the hurdles are high.
A stick-type USB DAC amplifier that connects to a smartphone is attracting attention as a savior for such people. It's smaller and easier to carry than a portable player, and you can use wired earphones without hindering the convenience of your smartphone. "But that's cheap, and the sound isn't as good as a portable player?" It's a model called "W2" from LUXURY & PRECISION.
LUXURY & PRECISION's "W2"The reason why the "W2" is attracting attention is its price. Even though it is small, it costs 39,600 yen, which is a pretty good price. People who thought, "... that thing is amazing on the inside!?" This "W2" is equipped with two Cirrus Logic top-of-the-line DAC chips, and has an SN ratio of 131dB, which is an astonishing spec that compares favorably with high-end portable players. In short, it's a small but serious stick-type USB DAC amplifier.