Ustars Audio BD93 Dual AK4493 SEQ DAC Fever HiFi Decoder Kit Hard Decoding DSD Soft Control Decoder Board

Introduction to BD93 Decoder Board

The new version of AK4493SEQ chip has a 32bit 768Khz sampling rate and DSD512 hard decoding ability. It supports a sampling specification that instantly kills PCM1794A, with high parsing power, speed and transparency, triple frequency balance, especially stronger analog flavor, and a round, sweet voice with very high cost-effectiveness.

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

Adding dedicated MCU soft controls, deep optimization, fully opening the AK4493SEQ function, improving sound quality, and providing 6 sets of digital filtering parameter settings on the carrier board, opening DSD NOS mode, volume control and other functions,

The IIS input design of the BD93 board is compatible with the Amanero USB interface, using matching ribbon cables and seamless connection with suitable USB modules. It can also be paired with an online version of the B18 digital board, connected in a joint control mode, and equipped with a suitable power supply and casing. It can be assembled into a complete decoder with infrared remote control function, and can also add suitable USB modules and Bluetooth modules as needed, with many gameplay options.

It is recommended to use a linear power supply for power supply, with improved details, speed, and delicacy. The sound field is wide and the positioning is accurate.

Input:

Standard 4-wire IIS interface/20P pin interface compatible with Amanero USB interface supports sampling specifications: PCM 44.1K~384K 32BIT

DSD DSD64, DSD128, DSD256

(The AK4493SEQ chip itself supports hard decoding of DSD512, but in practical use, PCM/DSD automatically switches between them. Without additional auxiliary signals, the board supports switching below DSD256, which is easy to achieve good switching results.)

Output:

RCA single end output: 2.1Vrms/- OdBXLR balanced output: 4.2Vrms/- OdBXLR interface definition: 1. ground, 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 below ± 15V) Size:

Board length × Width (excluding protrusions): 100MM × 10OMM