USB-C CABLE DONGLE · CONEXANT CX31993
JCALLY JM6E
A USB-C cable dongle with a Conexant CX31993 DAC chip, a 3.5 mm output and a built-in mic. About 7 g.
POWER AT 32 Ω28.2mW3.5 mm, per channel not stated
OUTPUT IMPEDANCENot statedNo data from the manufacturer
SNR117dBoutput not stated
PRICENo price yet
OUTPUTS3.5 mm
DAC CHIPConexant CX31993
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 -
SNR117 dB (JCALLY does not say for which output)
Dynamic range117 dB
Distortion-95 dB
Crosstalk-53 dB
Frequency response20 Hz - 20 kHz
Not stated: gain, supply voltage.
Is it enough for your headphones?
JCALLY rates the JM6E 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-Cproduct page
FormatsPCM up to 32-bit / 384 kHz
DAC chipConexant CX31993
MicCan answer calls, in-line control; ADC recording sample rate 24bits/96KHz
IndicatorRed light: PCM 44.1KHz; blue light: PCM 48KHz; green light: PCM 96KHz; pink light: PCM 192KHz; cyan light: PCM 384KHz
Build8-strand oxygen-free copper silver-plated wire; die-cast aluminium alloy shell, anodised with 180-grit fine sandblast
Parametric EQNo data from the manufacturer. Not supported in Contour.
Length110 ± 10 mm
WeightAbout 7 g