imo you dont need to audition CD players. They should all sounds the same if they're designed properly. Just go for one you like the look of and that seems well built.
Not all modern CD players sound the same. While the general function of CD players is to read and convert the digital data on a CD into an analog signal for output, various factors can cause slight differences in sound quality between different models.
One of the key factors is the quality of the Digital-to-Analog Converter (DAC). The DAC is responsible for converting the digital audio data into an analog signal, and a higher-quality DAC can produce cleaner, more detailed sound with less distortion or jitter (timing errors).
The circuitry and internal components of the player, such as capacitors, resistors, and op-amps, also influence the sound. Higher-quality components tend to reduce noise and unwanted interference, which can improve audio performance.
A stable and clean power supply ensures the player’s circuitry gets the right voltage, helping to minimize any noise or distortion that could affect the audio. The physical build quality of the player, including shielding against electromagnetic interference (EMI), can also make a difference. Cheaper players may not shield as effectively, potentially leading to unwanted noise or distortion.
The design of the output stage—where the audio signal is sent to speakers or an amplifier can have an impact too. Some players use more refined analog stages or balanced outputs, which can enhance clarity and dynamics.
Finally, while less significant in modern players, the transport mechanism (the way the CD is read) can also affect sound. Higher-end players usually have more stable and accurate transports, reducing errors that might impact playback quality.
Though these differences in sound can be subtle and subjective, audiophiles often prefer higher-end players because these elements contribute to a more detailed and richer listening experience.