19 Qsp Player By Sonnix

To understand the value of the 19 QSP Player by Sonnix, let’s look at its raw hardware. While Sonnix released multiple variants, the standard "19 QSP" model included:

The standout feature, however, is the QSP chip. Unlike simple bass boost circuits, the QSP engine uses time-delay and phase-shifting algorithms to create a wider soundstage, mimicking 5.1-channel surround sound on standard stereo headphones.

The star of the show is the audio architecture. Sonnix abandoned the popular ESS Sabre chips for the AKM AK4493SEQ x 4.

The 19 QSP is not an Android player. This is a significant choice. Sonnix opted for a proprietary RTOS (Real-Time Operating System) based on Linux. Why? To eliminate Android's audio latency and resampling issues. You cannot stream Spotify or Apple Music natively. You must load FLAC, WAV, DSD (up to DSD512), or MQA files onto a microSD card (supports up to 2TB). 19 qsp player by sonnix

The 19 QSP Player by Sonnix is not the most powerful, the most beautiful, or the most convenient audio player ever made. But it possesses a character that modern devices lack. The QSP sound processing—flawed and glorious in equal measure—turns familiar songs into new experiences. Its lack of connectivity forces you to be intentional about your listening: you curate the playlist, you transfer the files, you press play, and you listen.

For collectors, it remains a fascinating footnote in the history of portable audio—a brave attempt to bring virtual surround sound to the masses. For practical users, it serves as a durable, cheap, and battery-sipping backup player for travel or exercise.

If you find one in good condition, grab it. Just remember to bring your own Mini-USB cable. To understand the value of the 19 QSP

Have you owned or used the 19 QSP Player by Sonnix? Share your memories and mods in the comments below. And if you’re looking for detailed firmware guides, check out our companion article: “Rockbox on Sonnix Hardware: A Step-by-Step Tutorial.”

Since Sonnix ceased operations around 2016, the 19 QSP Player is no longer in production. Your best bets are:

This player is not for everyone. However, you might love it if: The standout feature, however, is the QSP chip

Conversely, avoid this device if you rely on Spotify, Tidal, or any streaming service. The 19 QSP Player has no internet capability at all.

If you are considering buying a used 19 QSP Player by Sonnix, be aware of these recurring problems:

The proprietary Quick Sound Processing (QSP) technology is what separates this player from generic alternatives. When you activate QSP mode (via a dedicated physical slider on the side of the device), the audio undergoes three distinct transformations:

In practice, the 19 QSP Player by Sonnix sounds remarkably open for a budget device from its era. Fans of live recordings and acoustic music particularly praise its ability to separate instruments. However, purists note that QSP can sound artificial on poorly mastered tracks, and the player includes a "Direct" mode to bypass processing entirely.