※本產品原廠代理從國外進口,有些交期較長,下訂前請詢問!
Kali The Goddess of Time
Every SBC has a crystal that it used to send digital signals to your DACs.
The accuracy of this crystal is very important in how well the DAC will transform the digital signal into analog sounds. Simply put: a better crystal means a better sound! Most SBCs use a very cheap crystal with lots of jitter in order to save costs.
Furthermore, there are 2 kinds of frequencies for digital files: 44.1Khz (wave files) and 48khz (streamed music). Some SBCs (like RPIs) can output only 48Khz, so imagine the degradation of the sound that was recorded at a different frequency.
Kali will solve both of those problems
First, it has a very low jitter NDK crystal feed by LDOs in series for ultra quiet power supply. Second, the FPGA will read the incoming stream, will buffer the DATA 0.7s while discarding the incoming clocks. Using the NDKs it will reclock the buffered data OUTSIDE the fpga (since fpgas introduce about 200ps of jitter) and provide a MCLK/BCLK that is direct from crystal, providing a jitter-free (almost) to your DAC.
Meanwhile, it will clock the file using the correct crystal (there are 2), fixing the problems outlined in the beginning.
Kali時代的女神
每個SBC都有一個水晶,它用來將數字信號發送到DAC。
該晶體的精度對於DAC將數字信號轉換為模擬聲音的效果非常重要。簡單地說:更好的水晶意味著更好的聲音!大多數SBC使用非常便宜的晶體,具有大量的抖動,以節省成本。
此外,數字文件有兩種頻率:44.1Khz(波形文件)和48khz(流式音樂)。一些SBC(如RPI)只能輸出48Khz,因此可以想像出以不同頻率記錄的聲音的降級。
卡利將解決這兩個問題
首先,LDOS具有非常低的抖動NDK晶體饋電,用於超靜音電源。其次,FPGA將讀入流,在丟棄傳入時鐘的同時緩衝DATA 0.7。使用NDK可以將緩存的數據重新鎖定到fpga外部(因為fpgas引入了大約200ps的抖動),並且提供了直接來自晶振的MCLK / BCLK,為您的DAC提供無抖動(幾乎)。
同時,它將使用正確的晶體(有2個)來記錄文件,解決一開始所概述的問題。
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頂視圖

底視圖

卡利跳線設置

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兼容性
- 兼容性:Sparky和RPI。僅與從DAC兼容。兼容隔離帽。
- PSU:5V / 100mA +無論您的DAC需要(您有桶尺寸)
- 不使用:主DAC(像我們的BOSS)
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Features
- Kali is compatible with Sparky and RPI
- Reduces jitter to less than 4 pico seconds
- The basic design includes FPGA based FIFO board
- With 45.1584/49.1520 MHz Ultra Low Phase Noise Oscillators
- I2S input: 44.1 KHz, 48 KHz, 88.2 KHz, 96 KHz, 176.4 KHz, 192 KHz , 352.8KHz,384KHz- 16bit, 24bit or 32bit
- I2S output: 44.1 KHz, 48 KHz, 88.2 KHz, 96 KHz, 176.4 KHz, 192 KHz , 352.8KHz,384KHz - 16bit, 24bit or 32bit
- FIFO Memory: 4MB SRAM
- LED indicators (Power, Full, Lock, Empty, Sample Rate, Mclk)
- DC power supply: (5V/3A) with Filter circuits
- Multi-frequency output capability to support the full I2S working range from 44.1 KHz to 384 KHz
- Automatically switching frequencies according to the input I2S signals
- Extremely fast and very low propagation delay Flip-Flops are added on I2s signals output from FPGA, for synchronization with MCLK before sending to DAC
- Ultra-low-noise voltage regulators for optimal audio performance
- Integrated EEPROM for automatic configuration (with write-protection)
- Purchase stand-alone Kali unit or get the Vana Player bundle (Sparky + Kali + Piano 2.1 + Volt + CM + 5V Adaptor + Acrylic Box)
- Kali兼容Sparky和RPI
- 將抖動減少到小於4皮秒
- 基本設計包括基於FPGA的FIFO板
- 具有45.1584 / 49.1520 MHz超低相位噪聲振盪器
- I2S輸入:44.1KHz,48KHz,88.2KHz,96KHz,176.4KHz,192KHz,352.8KHz,384KHz-16bit,24bit或32bit
- I2S輸出:44.1KHz,48KHz,88.2KHz,96KHz,176.4KHz,192KHz,352.8KHz,384KHz-16bit,24bit或32bit
- FIFO存儲器:4MB SRAM
- LED指示燈(電源,充滿,鎖定,空,採樣率,Mclk)
- 直流電源:(5V / 3A),帶濾波電路
- 多頻輸出能力,支持I2S工作範圍從44.1KHz到384KHz
- 根據輸入I2S信號自動切換頻率
- 非常快速和非常低的傳播延遲在FPGA輸出的I2s信號上添加觸發器,用於在發送到DAC之前與MCLK同步
- 超低噪聲電壓調節器,實現最佳音頻性能
- 用於自動配置的集成EEPROM(帶寫保護)
- 購買獨立的卡利單位或獲得Vana Player包(Sparky + Kali +鋼琴2.1 + Volt + CM + 5V適配器+亞克力盒)
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技術規格
LED指示燈 | 電源,充滿,鎖定,空,採樣率,Mclk |
直流電源 | (5V / 3A)帶濾波電路 |
工作溫度 | -25℃至85℃ |
板尺寸 | LWH = 58mm * 77.54mm * 23.8mm |
直流連接器尺寸 | 2.5mm x 6.5mm |
配合插頭尺寸 | 2.5mm x 5.5mm |
電路板重量 | 120克 |
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