USB-C CABLE DONGLE · CX31993
JCALLY JA3T
A USB-C cable dongle with a CX31993 DAC chip, a 3.5 mm output and a built-in mic. About 5 g.
POWER AT 32 Ω28.2mW3.5 mm, per channel not stated
OUTPUT IMPEDANCENot statedNo data from the manufacturer
SNR>117dBas JCALLY states it
PRICENo price yet
OUTPUTS3.5 mm
DAC CHIPCX31993
PARAMETRIC EQNot statedJCALLY lists none
CONTOURNot supported
Numbers are the manufacturer's stated figures unless marked as measured; sources linked below.
Outputs and power
3.5 mm
28.2mWat 32 Ω
Spec image: 28.2 mW at 32 Ω, per channel or both channels not stated
Output impedance -
SNR>117 dB
Distortion-95 dB (JCALLY does not say THD or THD+N)
Crosstalk-53 dB
Frequency response20 Hz - 40 kHz
Not stated: gain, supply voltage.
Is it enough for your headphones?
JCALLY rates the JA3T at 28.2 mW into 32 Ω. Below is how much of that is left to spare for each kind of headphones when you listen loud, with peaks at 110 dB. A figure marked est. is worked out from that rating.
Sensitive IEMsMulti-driver sets that hiss on strong sources
needs 0.6 mWest. 14 mW at 16 Ω+13 dBMost IEMsTypical in-ears, 16 to 50 Ω
needs 3.2 mW28.2 mW at 32 Ω+10 dBEasy-to-drive headphonesClosed and portable, 32 Ω
needs 16 mW28.2 mW at 32 Ω+3 dBHard-to-drive headphones300 Ω, HD 600 class, hungry for voltage
needs 20 mWest. 3 mW at 300 Ω8 dB shortMost planarsPlanar magnetic, low impedance, need current
needs 50 mW28.2 mW at 32 Ω2 dB shortDemanding planarsThe hardest loads, desktop territory
needs 251 mWest. 15 mW at 60 Ω12 dB shortThe device
From JCALLY's spec images unless markedInputUSB-C
FormatsPCM up to 32-bit / 384 kHz
DAC chipCX31993
Works withVerified for listening, recording and CTIA/OMTP Android inline control on Xiaomi 10, Huawei P40 Pro, Samsung S20, Google Pixel 3, iPad Pro and others
MicSupports live streaming, calls, karaoke amp, U-shield and K-bao (USB security keys)
BuildAluminium alloy 3D curved one-piece die-cast shell; small plastic step design
Parametric EQNo data from the manufacturer. Not supported in Contour.
Length34 mm
WeightAbout 5 g
Devices with the same DAC chip
CX31993 · 13 devices use itMore like this
Sources
Checked 6 Nov 2026wanwang.xin · the spec image
Used for power, noise and distortion, frequency response, formats, the DAC chip, size and weight