NFJ PCM5102A DAC Complete Board Raspberry Pi I2S

I acquired this new item, confirmed its operation, and stored it.
However, I have not confirmed its operation for this listing.
There is a possibility that it may not operate normally due to aging during storage.
There are many ways to operate it online, so please look them up.

Notes:
- This is a used item, so there may be some scratches, dirt, and dust.
- We do not accept returns or exchanges after purchase, so please understand this in advance.
- Shipping may take **3-4 days**.

Product Information:
[Operating Mode Settings]
* The following operating modes can be set using DIP switches.
H = ON, L = OFF
Switch 1: Filter Setting ON: IIR (Infinite Impulse Response) / OFF: FIR (Finite Impulse Response)
Switch 2: Audio Format Setting ON: Left-Justified / OFF: I2S
* Always set the DIP switches with the power OFF. Operating modes are read when the IC starts up and will not reset unless the power is turned off.

[Precautions]
* The 3.5mm stereo mini-jack output terminal does not guarantee operation with 4-pole plugs (TRRS).
* There is no instruction manual as the necessary information is written on the circuit board.

[Product Specifications]
DAC IC: Burr-Brown PCM5102A [S/N Ratio] 112dB / [Dynamic Range] 112dB / [THD] -93dB
Operating Voltage: DC4.2V to 12V
Digital Input: I2S (IIS) / Left Justified (Supports both 3-wire and 4-wire input)
Input Terminals: [Pin Header] LRCK/BICK(BCLK)/DATA(SDATA)/MCLK/GND
* If your device does not have MCLK output, it will operate with the internal clock by grounding MCLK. Even if not grounded, it will automatically operate with the internal clock according to the IC's specifications.
Analog Output: Stereo RCA Terminal / 3.5mm Stereo Mini-Jack (4-pole plug operation not guaranteed) *Mutually exclusive use
Functions: [DAC Digital Filter Calculation Method Change Function] FIR Finite Impulse Response (Normal) / IIR Infinite Impulse Response (Low) [Input Format Switching Function] I2S & Left-Justified [MUTE Function]