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1. Features
•
DAC CS43198 (192 kHz/32bit )
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DAC output is selectable (1.7Vrms or 2Vrms) .
•
Sampling Frequency 44.1 kHz to 192 kHz range.
•
Dual Ultra low Phase noise NDK SDA oscillators are used for master
Clock generation.(MCLK)
2. Hardware Description:
RPI4, Boss2, Oled , Alu box and remote included .
Boss2 Manual
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Summary of Contents for ALLO Boss2
- Page 1 DAC output is selectable (1.7Vrms or 2Vrms) . • Sampling Frequency 44.1 kHz to 192 kHz range. • Dual Ultra low Phase noise NDK SDA oscillators are used for master Clock generation.(MCLK) 2. Hardware Description: RPI4, Boss2, Oled , Alu box and remote included .
- Page 2 Rear side: RPI USB, Ethernet, 5V-DC in, RCA: RED- Right, Black - Left 3.Power: Boss2 support single and Dual Power adapters. Single PSU (default) For single power J18 jumper must be closed as below picture . Power required is 5V-3A and should be connected through back panel DC In...
- Page 3 Dual Power Adapter: For dual psu J18 jumper should be open , Power adapter interface should be as below Picture . Power Adapter rating: 1. RPI USB type C rating: 5V 3A. 2. Back panel DC In Connector : 5V , 250ma (or higher).
- Page 4 Protective earth wire should be connected bottom of metal box as below ( to Shanti for example). You can earth the unit by using a Nirvana SMPS with earth switch on . Connection between BOSS2 and Shanti (Dual Power) OLED TYPE C...
- Page 5 Connection between BOSS2 and Nirvana(Dual Power) OLED BOSS2 TYPE C Nirvana Nirvana Connection between BOSS2 and Nirvana(Single Power) OLED BOSS2 TYPE C Nirvana...
- Page 6 Software Boss2 Driver and Configuration : Boss2 dac Driver is included on RPI 5.4.77 kernel onwards. In some players (Moode and more) Boss2 is configurable through GUI. Manually configuring Boss2-DAC . Check for allo-boss2-dac dtbo Goto /boot/overlays/ Check for allo-boss2-dac-audio.dtbo file.
- Page 7 DE-EMP – De Emphasis Enable/Disable NON-OS – NonOversampling Enable/Disable F-SPEED – Filter Roll-off Interpolation Selection – FAST/SLOW Default SCREEN Shows volume level, playing bit rate, sample rate, mute state **************************************************...
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