A1_parameters

A1

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Frequency Response diagram of curves.

Test condition: Load=33 ohms, Vol=Max, Headphone ouptut.

Red curve: Left channel Blue curve: Right channel

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Distortion diagram of curves.

Test condition：AUX INPUT=300mV，Vol=Max，BASS=OFF

Model Name/Number	A1	Color Available	Silver
Model Name/Number	A1	Color Available	Silver
Weight	20g (incl. belt clip)	Dimensions	42mm x 40.7mm x 9.4mm
Audio Input	Standard 3.5mm Port	Headphone Output	Standard 3.5mm Port
Drive Ability	16~100 Ω (recommended)	Power Input	DC 5V/0.8~1A (recommended)
Battery Capacity	160 mAh	Battery Life	≥13 h (32Ω loaded)
Output Power	≥78mW（16Ω / THD+N＜1%)	Charging Time	≤90 mins
THD+N	<0.05% (1kHz)	Output Impedance	≤ 0.2 Ω
Frequency Response	10 Hz~90 kHz（-3dB，Input: 300mV）	SNR	≥100dB (A-weighted)
Input Sensitivity	1.05Vrms（Vol=Max）	MAX input Level	1.35Vrms
Crosstalk	≥65 dB	Channel Imbalance	≤ 0.2dB
Gain	3.65dB	Status LED	Yes
MAX Output Voltage	4.52Vp-p	MAX Output Current	50mA
EQ Modes	Bass1: 2.7dB bass boost	MCU	MSP430
	Bass2: 5.2dB bass boost
	Bass3: 5.2dB bass reduction
Headphone AMP	TPA6130A2	Sound Effects Module	74HC4052PW＋OPA2322AID