Product record · Portable DAC / headphone amplifier

Questyle M15C

L2 · Documented recordThe family price-performance choice when both 3.5 mm and 4.4 mm wired outputs are required.

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

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M15CPortable DAC / headphone amplifier
System role
Portable DAC / headphone amplifierConfirm the complete connection path
Documented official version
No recorded versionNo dated release recorded
Independent test scope
No dated SPL test recordedPublished scope and limitations remain separate
Source checked
2026-09-24A source-check date is not a new device test
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Firmware & software

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Tests & evidence checkpoints

1 record
  1. Questyle M15C primary-source status checkpoint
    Evidence checkpointPrimary-source Verified
    Details

    Current product identity verified; functional behavior remains Awaiting SoundPath Lab test unless separately recorded

    Version / scope
    Firmware/version unknown
    Source type
    Brand official product page
    Source checked
    2026-09-07
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    A manufacturer’s fix claim is separate from an independently verified result. A dated observation does not establish a model-wide failure rate.

One record is currently documented.

Complete history: 1 records. Product, brand and update views use the same canonical event identifiers. Event date and source-check date remain distinct.

System role

Where it fits

A basic USB dongle plus a separate portable balanced-output adapter.

Limits: A Bluetooth receiver, battery source, desktop line-output DAC or proven high-power amplifier.

Evidence & support

Keep the conditions visible

M15C adds balanced-cable flexibility without paying for M18i's wireless role; it is the sensible middle choice when M12i's single-ended limit matters.

Full test scope, specifications & owner feedback ↓
Full specifications, test scope, existing assessments & owner feedback

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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