DAC/AMP HARDWARE

The JCALLY JM12 uses the KT02H20 DAC chip, supporting PCM 32-bit/384 kHz and DSD128 for true high-resolution playback. With 112 dB SNR, 113 dB dynamic range, and low distortion, it delivers clean, stable audio suited for sensitive IEMs. Output power reaches 27 mW @ 32Ω, offering enough drive for most earbuds and portable earphones. Its internal layout keeps noise low while preserving detail and clarity.

SOUND CHARACTER

JM12 is tuned for a neutral-clean, slightly warm character. Bass stays tight, mids are clear and natural, and treble extends smoothly without sharpness. The dongle improves separation and detail over typical phone outputs, maintaining the original tonality of your IEMs. Its warmth makes it engaging without sounding analytical or harsh.

CABLE, CONNECTIVITY & INSIDE THE BOX

• Silver-plated conductor for better signal transmission.

• Compact 110 mm cable length (±10 mm).

• Lightweight design (~7 g).

• USB-C plug with 3.5 mm single-ended output.

• Compatible with Android, Windows, macOS, and iPadOS.

Inside the box: JM12 DAC + documentation (packaging varies by batch).

OUR VERDICT

Who it’s for: Great for users wanting a budget-friendly dongle DAC that clearly improves clarity and dynamics over standard device audio. Ideal for commuting, casual listening, and upgrading phone/laptop output.

Strengths: High-res PCM + DSD support, clean neutral sound, low noise, lightweight build, silver-plated conductor, plug-and-play compatibility.

Limitations: Lower output power; no balanced output; crosstalk is average.

Value: Excellent—affordable, reliable, and noticeably improves audio quality for IEM users.

AFTER-SALES & WARRANTY (SHARMAZ NEPAL)

Covered under a 3-month replacement guarntee for DAC or internal failures. Accessories and early defects fall under a 15-day replacement policy. Sharmaz Nepal provides setup assistance, compatibility checks, and sound pairing suggestions. Physical or water damage is not covered, but repairs and replacements are available at reasonable cost.

Brand : JCALLY

Product name : JM12 digital audio adapter

DAC chip：KT02H20

PCM：32bits 384KHz

DSD：DSD128

SNR：112dB

DR：113dB

Crosstalk：-52dB

Distortion：-87dB

FR：20Hz~20KHz

Output power ：27mW@32Ω

Conductor ：silver-plated

Length ：110mm±10mm

Weight ：Around 7g