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| C201 Audio Motherboard Information | |||||
| Dac | CS43198 x 8
|
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| Parallel Connection
|
Synchronous 4x DAC Chip to improve performance | ||||
| Volume Control | NJU72315 x4 Cascade Volume control | ||||
| Headphone | 3.5mm+4.4mm Balanced | ||||
| Amplification | OPA1622 x4 Parallel for two channels | ||||
| Line Out | 3.5mm Dedicated) 4
.4mm (Shared) |
||||
| Battery and Duration (N6iii with C201) | |||||
| Battery | Condition | Screen off, all wireless disabled, 322, mid gain, volume 30, mixed format playback | |||
| 4.4mm (Balanced) | 3.5mm (Single-Ended) | ||||
| PO | LO | PO | LO | ||
| Headphone | ~14.2 Hr | ~16 Hr | ~12.4 Hr | ~13 Hr | |
| Charging | Charger | Standard Charger (5V-2A) | Quick Charge PC2.0 | ||
| Time | ~6.3 Нг | 0-100%-4 Hr
20-80%-2Hr |
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The C201 was Cayin’s first use of a Cirrus Logic DAC chip in a portable product. In the early 2000s, the CS4398 and PCM1792 DAC chips dominated the audio industry, and Cayin used them extensively in its early DAC and CD players.
The CS43198 chip included in the C201 is no stranger to audiophiles. It is a low-power, high-quality DAC developed by Cirrus Logic based on the CS4398. It is widely recognized and used in the audio industry. In the C201, Cayin uses eight CS43198 chips that form a “Parallel Full Differential Matrix DAC” design.
The core principle is that the digital audio processor (FPGA) in the N6iii main unit feeds each DAC individually with I²S signals. All DACs operate in MONO mode and output differential signals (L+, L-, R+ and R-). Four DACs form a group and their outputs are connected in parallel to create a complete differential output channel.
The power supply and peripheral circuits for each DAC chip are fully discrete and symmetrical, ensuring extremely stable DAC performance.
This design ensures precise phase alignment for all DACs, while low-jitter synchronous clock technology minimizes distortion in the parallel DAC output, significantly improving sound density and overall audio performance.
Change to a New Audio System “Just Like That”
Fully modularized the audio system in the DAP, a complete replacement of both the DAC and analog circuits.
Increase PCB area by 31% to take the audio motherboard performance to a new height.
Built-in dedicated microcontroller interact with the 665 MCU to enable comprehensive audio adjustments and keep track of the operation status of the Audio Motherboards independently.
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