BS93 Bluetooth 5.0 DAC Decoder AK4493 Support For HIFI Coaxial Optic RCA Output APTX HD LDAC

BS93 Bluetooth 5.0 DAC Decoder AK4493 Support For HIFI Coaxial Optic RCA Output APTX HD LDAC

Features:
- BS93 is equipped with CSR8675 Bluetooth chip, which supports for audio transmission coding such as LDAC, APTX HD, APTX, AAC, SBC. High-quality digital audio is output to AK4493 through Bluetooth 5.0 CSR8675, which realizes 96Khz / 24Bit high-definition decoding, and obtains sound quality far better than CD.
- Bluetooth HD lossless audio transmission.
- Use HiFi differential coaxial driver chip DS8921 and high-quality digital isolation transformer. While harvesting good sound, effectively prevent the ground loop interference between the equipment.
-AK4493 is an upgraded version of AK4490 with more complete functions. BS93 uses a piece of AK4493 with imported analog special chip capacitors to get better sound effects.
- The op amp is powered by a standard dual 15V voltage to avoid the negative impact of the DC blocking capacitor on sound restoration. The whole machine is equipped with op amp 5532DD, the sound is transparent and natural, not harsh. It is convenient for players to change op amp with different sound styles.
- Silent processing when turning on and off. Use audio special relay. The output is mute when the machine is turned on or off to avoid noise or impact sound.
- Automatic shut-down. Equipped with industrial-grade AVR micro-control, real-time control. In addition to processing to realize the touch switch to turn off or turn on, automatic shutdown, ADC volume control, and switch mute, more importantly, the AK4493 is deeply optimized through the soft control interface, outperforming AK4493 in hard control status. The high-performance machine will provide users with a high-quality experience. Automatic power-off function: the machine will automatically turn on when power is turned on, and it will automatically power off and shut down within 15 minutes without Bluetooth connection.
- ADC Volume Adjustment. Application of ADC volume adjustment technology to solve the problem of left and right polarization in the case of low analog volume, combined with solid core all-aluminum refined knob, brings a new control experience. This volume adjustment function works for analog output volume adjustment, not for coaxial, nor optic digital output volume.
- Color Indicator. Lightly touched button with LED to turn on and off, and use multi-color light to indicate the current working state of the machine. Red: standby. Blue: Bluetooth connection. Purple: Bluetooth playing. Bluetooth Input Instructions:
a. Connected device indicator: blue indicator is lit.
b. Unconnected device indicator: blue and purple flash alternately.
- Touch the button on the left side of the front panel to turn it on and off. Long press for about 5 seconds to turn on or off.
- Product Size: 108 x 86 x 30mm (LxWxH) (Exclude the size of convex parts)

Front Panel:
- Touch button
- Volume knob
- Headphone port

Rear Panel:
- R & L: RCA audio output
- COA: Coaxial output
- OPT: Optic output
- RF: Bluetooth antenna port
- DC_5V: 5V power supply port

Specifications:
- Digital input: Bluetooth: For LDAC / apt xX HD / apt X / AAC / SBC
- Digital output:
* Coaxial output: 44.1-96KHz / 16-24Bit
* Fiber output: 44.1-96KHz / 16-24Bit
(The signal sampling frequency of the digital output is related to the transmission coding and settings supported by connected mobile phone)
- Analog output:
* RCA output: 2.0Vrms / -0dB
* 3.5 Earphone socket: 2.0Vrms / -0dB
(The earphone socket is directly connected to the RCA socket, and most earphones can be connected. For better drive quality, it is recommended to connect headphone amp)
- Power requirements:
* Input voltage: DC voltage regulation +5V, voltage range: ±5%
* Power supply interface: conventional TYPE-C (supports positive and negative insertion)
- Standby current: 10MA
- Working current: > 200MA
(Most of computers' USB interface, mobile phone charger, USB mobile power supply can provide power supply for this machine, it is recommended to use high-quality 5V power adapter or linear regulated power supply above 1000MA)
- Product Size: 108 x 86 x 30mm (LxWxH) (Exclude the size of convex parts)

Package Included:
- 1 x BS93 Main Unit
- 1 x 6DB Bluetooth Antenna
- 1 x Type-C Power Cord

Note:
- It does not support U disk, memory card, nor mobile hard disk.
- Power supply is not included. Input power supply must meet the above power supply requirements, especially the power supply voltage. Anything beyond the power supply voltage range or the reverse polarity of power supply will cause damage to the machine.