The Truthear KEYX DAC uses the Cirrus Logic CS43131 chip to process and convert digital audio signals. Its L-shaped housing features a built-in 3.5 mm jack, while its design helps reduce noise, distortion, and radio-frequency interference. It supports a microphone and online DSP settings via the EQTOOL.COM platform.
The USB-C connector connects to compatible devices, such as smartphones and computers. The package includes the DAC, a keychain, and a user manual.
- DAC chip: Cirrus Logic CS43131
- Maximum PCM decoding: 384 kHz/32-bit
- DSD decoding: DSD256
- Frequency range: 20 Hz–20 kHz
- Connectors: USB-C to 3.5 mm, 4-pole (SE+MIC)
- Microphone support: Yes
- THD+N distortion at 1 kHz, 0 dBFS: -107 dB at 1 Vrms with a 32 Ω load / -112 dB at 2 Vrms with a 600 Ω load
- DNR dynamic range at 1 kHz, -60 dBFS: 122 dB at 1 Vrms with a 32 Ω load / 122 dB at 2 Vrms with a 600 Ω load
- SNR signal-to-noise ratio at 1 kHz, 0 dBFS: 122 dB at 1 Vrms with a 32 Ω load / 122 dB at 2 Vrms with a 600 Ω load
- Output level: ≥50 mW with a 32 Ω load
- Audio settings: Online DSP via EQTOOL.COM
- Color: Black
- Package contents: DAC, keychain, user manual