SoundPath Lab · Verified product profile

Questyle M15C

Portable USB DAC/headphone amplifier with Questyle current-mode amplification and both 3.5 mm and 4.4 mm outputs.

CategoryPortable DAC / headphone amplifierStatusCurrent / sold by official or authorized channelsReleaseCurrent generation; exact launch date not independently verifiedMarketsNorth America · Europe · Asia-Pacific; availability varies by regionPrice$89–$129 dated rangePrice checked2026-08-23

Verified data

Category-specific specifications

BrandQuestyle
ModelM15C
Product categoryPortable DAC / headphone amplifier
DACCirrus Logic CS43198
Digital inputUSB-C
Headphone outputs3.5 mm and 4.4 mm balanced
Maximum PCMUp to 32-bit/384 kHz
Maximum DSDUp to DSD256

Unknown fields are not treated as supported. Services, firmware behavior and regional availability may change after the checked date.

System fit

Best for / not ideal for

Best for

  • Balanced portable IEM use
  • Phone and laptop listening
  • Value-focused current-mode amplification

Not ideal for

  • Bluetooth listening
  • Desktop systems needing line outputs
  • Demanding headphones needing a powered desktop amplifier

SoundPath verdict

What matters beyond the spec sheet

Strengths

  • Dual headphone outputs
  • Strong sale-price value

Weaknesses

  • No Bluetooth or battery

Biggest limitation

It is a bus-powered dongle, not a wireless or desktop hub.

Best alternative

Questyle M15i for a higher-tier portable model.

Best-value use case

Balanced wired listening from a phone or laptop.

Knowledge graph

Reviews, comparisons, guides and risks

Reviews & explainers

No dedicated review is published yet.

Firmware

Latest known software status

Latest known version
See official support page / tracker
Updated
Not separately verified
Last checked
2026-08-23
Notes
No separate current version was verified. Check the exact model and hardware revision on the official support page before updating.

Purchase verification

Available channels

OfficialOfficial product / store pageglobal · checked 2026-08-23

Official channel is listed first. No unverified marketplace or variant link is included.

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