Description

 

BD93 Standard Board Dual AK4493 SEQ DAC HiFi Audio Decoder Kit 32Bit/PCM384kHz Hard Decoding DSD

Description:
- The new AK4493SEQ chip has a 32bit 768kHz sampling rate and DSD512 hard-decoding ability, and its supported sampling specification is better than PCM1794A. It has high resolution, speed and transparency, and triple frequency balance, especially the stronger analog feeling. The voice is mellow and sweet, which is cost-effective.

- BD93 uses two AK4493SEQs in total. One AK4493SEQ chip is responsible for only one channel. The independent lines are really balanced. The two channels do not interfere with each other. And the sound is crisp, delicate, clean and transparent.

- It adds special MCU soft control, in-depth optimization, fully open the function of AK4493SEQ, improve the sound quality, and provide 6 sets of digital filter parameter settings on the carrier board, open DSD NOS mode, volume control and other functions.

- The IIS input of the BD93 board is designed to be compatible with the USB interface for Amanero. It can be seamlessly connected with the appropriate USB module by using the matching flat cable. It can also be connected with the online version of the B18 digital board in the joint control mode. With the appropriate power supply and housing, it can be assembled into a complete decoder with infrared remote control function. You can also add the appropriate USB module and Bluetooth module as required. There are many ways to play.

- It is recommended to use linear power supply for power supply. The details, speed and fineness are improved, and the sound field is open and accurate.

Input:
- Standard 4-wire IIS interface/20P pin interface is compatible with USB interface for Amanero.
- Sampling specification:
  PCM 44.1K ~ 384K 32BIT
  DSD DSD64, DSD128, DSD256
  (The AK4493SEQ chip itself supports hard decoding of DSD512, but in actual use, the PCM/DSD switches automatically. It is easy to achieve better switching effect when the board supports below DSD256 without additional auxiliary signals)

Output:
- RCA single-end output: 2.1Vrms/- 0dB
- XRL balanced output: 4.2Vrms/- 0dB
- XLR interface definition: 1-GND; 2-Positive; 3-Negative

Power Supply:
- Digital power supply: DC stabilized voltage: +5V, voltage range: ± 5%
- Analog power supply: DC stabilized voltage: ±12 ~ 15V (analog power supply is only suitable for ±15V)

Size:
- L x W (excluding protruding part): 100mm × 100mm

IIS Input Interface Function and Description:
- DA: DATA/DSD_R; PCM data input/DSD right channel data input
- BC: BCK/DSD_BCK; PCM digit clock input/DSD clock signal input
- LR: LRCK/DSD_L; PCM channel clock input/DSD left channel data input
- MC: MCLK; PCM main clock input
- DE: DSD_ON; DSD input, DSD_ON=1: input DSD; DSD_ON=0: input PCM
- MU: MUTE; mute input, MUTE=1: mute; MUTE=0: normal playback status
- SC: SCL; used for communicating with B18 online version
- SD: SDA; used for communicating with B18 online version
- G: GND; grounding
- NC: Null Connector; no need to connect

PCM Filter Setting (0: connected, X: disconnected)
- J2/J3/J4: X00; Short delay sharp roll-off filter
- J2/J3/J4: XXX; Short delay sharp roll-off filter
- J2/J3/J4: 0XX; Short delay sharp roll-off filter
- J2/J3/J4: X0X; Sharp roll-off filter
- J2/J3/J4: 00X; Slow roll-off filter
- J2/J3/J4: XX0; Super slow roll-off filter
- J2/J3/J4: 0X0; Low dispersion short delay filter
- J2/J3/J4: 000; Online mode, only applicable to connecting the online version B18 board, please use non-online mode for other inputs.
- Note: Online mode needs to be set after power outage. When the board is in online mode, J8 and J9 jumpers need to be connected, and other jumper functions and carrier volume interface functions will be disabled.

Package Included:
- 1 x Decoder Board

Note:
- Product installation and use require hands-on skills and relevant basic knowledge.