Questyle SIGMA Pro Portable Bluetooth DAC with Headphone Amplifier 2026 - Black
Our users rate Reverb
Lightly used and recently purchased.
This portable DAC/amp from the highly regarded hifi company, Questyle, really sounds fantastic! The amp is great for harder to drive headphones like the ultra popular planars from Audeze, Dan Clark, Hifiman, etc.
I don't have as much use for it as I expected, so here's your opportunity to get it at a solid discount.
Finding a headphone DAC/amp at this level that includes analog inputs is not easy.
The dual ESS9069 DAC is crystal clear and the amp circuit is clean and powerful.
The digital inputs include USB C, Spdif coax, and optical.
Analog inputs are 3.5mm unbalanced and 4.4mm. The 4.4mm seems to also be unbalanced based on the input level, so I recommend lowering the send to the amp by 6-9dB to allow the necessary headroom.
Includes all original boxes and accessories, as well as a case.
Shipping to the Continental US only.
From Questyle's website:
- Patented Current Mode Amplifier with a fully discrete, fully balanced design delivers professional-grade performance from a portable form factor. Balances powerful drive with low power consumption, featuring a peak output power >5V and load distortion as low as 0.0002%.
- Equipped with dual ESS9069 DAC chips and TTA three-tier decoding architecture, breaking the limits of portable devices by offering top-tier decoding performance up to PCM768kHz and DSD512. Mobile devices can now achieve desktop-level resolution.
- Apple MFi certified, ensuring perfect compatibility with iPhone/iPad and seamless integration within the Apple ecosystem.
- Dual certified by Qualcomm Snapdragon Sound and Sony LDAC, enabling wireless enjoyment of lossless audio.
- 3.5mm, 4.4mm, & 6.35mm headphone output jacks, combined with manual gain control, allow easy switching to your personalized listening mode.
- Built-in 4300mAh high-capacity battery provides up to 12 hours of single-charge battery life. The dual USB-C port design supports charging while listening, eliminating battery anxiety.
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| Listed | 7 hours ago |
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| Condition | Excellent (Used) Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more |
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