19 Qsp: Player By Sonnix
The Quad DAC setup creates a bass texture that is visceral. Sub-bass rumble (listening to Limit to Your Love by James Blake) extends to 20Hz without roll-off. Unlike the "warm" sound of older Sonnix players, the 19 QSP is neutral-cold. Bass is tight, fast, and detailed, but not boosted. Metalheads will love the double-kick separation; EDM fans may want a warmer amp.
Rating: 9.2/10
The 19 QSP Player by Sonnix is a statement. In an age where DAPs (Digital Audio Players) are trying to become smartphones, Sonnix has built a refrigerator for music: cold, efficient, and purely functional. The analog stage is reference-class. The Quad Synchronous Processing eliminates jitter so effectively that it makes 16-bit/44.1kHz CDs sound like high-res masters. 19 qsp player by sonnix
The lack of streaming will kill the deal for 70% of consumers, but for the remaining 30%—the archivists, the purists, the commuters who want to shut off the internet—the 19 QSP is currently the best sub-$1,000 player on the market.
Where to buy: Directly from Sonnix’s global store (shipping takes 3 weeks) or via authorized dealers like Bloom Audio or ShenzhenAudio. The Quad DAC setup creates a bass texture that is visceral
Have you tried the 19 QSP with sensitive IEMs? Share your impedance matching tips in the comments below.
Sonnox is a renowned British audio software company, and "QSP" likely refers to their Quadratic Sidechain Processing technology or is a shorthand for their Oxford EQ plugin which utilizes QSP. Have you tried the 19 QSP with sensitive IEMs
Here is an article regarding the technology and the likely plugin you are inquiring about.
The UI is called the Quill Interface. It is monochromatic, text-based, and lightning fast.
This is a love-it-or-hate-it design. For purists, it replicates the Zen of a CD player. For modern users expecting Spotify Connect, it will feel archaic.
Battery Life: Because there is no power-hungry Android OS or Wi-Fi chip, the 19 QSP delivers 19 hours of playback on single-ended and 14 hours on balanced. This beats the Sony Walkman NW-ZX707 by nearly 7 hours.