Upgraded JCALLY JM98Max Headphone Amplifier USB-C to 3.5mm Dual-Chip Decoder CS43198 Earphone Adapter Cable For iPhone Xiaomi

Please note

1. This product is a high-power headphone amplifier that may generate slight heat during use, reaching approximately 38°C. This is normal and safe for operation.

2. If unsure about compatibility, carefully review the image descriptions, which include detailed displays of supported smartphone/tablet/laptop models.

3.If there is no audio input for a few seconds, the device will automatically enter standby mode (red light turns on). This is a standard design feature intended to reduce heat generation and extend the lifespan of the DAC chip during prolonged use while plugged in.

4.Due to the nature of the USB adapter, Windows systems will, by default, cut off power to the USB port after a period of inactivity. Once the DAC enters low-power standby mode, the system determines that the device is not in use and immediately disconnects the USB connection. This results in the device disappearing from the sound settings and requiring a reinsertion—a phenomenon unrelated to hardware quality.

Package Contents

1×JM98 MAX Headphone Amplifier
1×USB Interface
1×User Manual

Parameters

Model: JCALLY JM98 MAX
DAC Chip: CS43198
Op-amp Chip: SGM8262
PCM Sampling Rate: 32-bit/384kHz
DSD Sampling Rate: DSD256
Signal-to-Noise Ratio: ≈125dB
Distortion: ≈0.0003%
Output Power: ≈195mW
Output Impedance: ≈0.65Ω
Dimensions: Approximately 11cm


EQ Adjustment Indicator Lights:
Original Sound: Yellow
Bass Boost: Cyan
Treble Boost: Pink

Sample Format Indicator Lights:
Standby: Red
PCM: Green
DSD (Exclusive): Blue

Function Support:
Supports music, gaming, live streaming, calls, recording, inline controls, three-band EQ switching
UAC 1.0 and 2.0 mode switching

Compatibility:
Supports Android/iOS devices with Type-C ports, tablets, and computers running MAC/Windows 10 or later; compatible with Switch, PS5 consoles, and Windows 7 computers (requires switching to UAC 1.0 mode)

Cable Material:
8-strand silver-copper hybrid 448-core, silver-plated conductors

Housing Material:
Aluminum alloy CNC-machined curved surface, tempered glass CNC curved edge finish