ALLO – MiniBoss for RPI Zero
From: 38.17 $
Units Sold: 20
The MiniBoss for Raspberry PI Zero is the first Master DAC based on PCM5122, with a serious design work on clock and power supply. It can be easily considered the best DAC for Raspberry PI Zero, and its price difference among competitor is well justified by its superior implementation.
There are many DACs for RPI Zero. Most of them low-priced, carbon copy of datasheet, slave DACs.
Allo, as usual, did something different:
The MiniBoss for Raspberry PI Zero is the first Master DAC based on PCM5122, with a serious design work on clock and power supply.
The RPI has one major problem with audio. The clocks coming from CPU can only output one frequency clock perfect (very close), resulting in major problems with audio files sampled at 44Khz (and multiple). Too much jitter on I2S clocks. To solve the above problem, Allo designed this DAC as a Master DAC:
Instead of the RPI giving the clock on the line, the DAC itself sends the clocks, and RPI sends the data (file to be played). The Allo MiniBoss uses 2, high quality, different clocks.
The MiniBOSS is the first Master DAC for RPI Zero on the market.
Allo Mini BOSS DAC is also unique, because its power circuit design. First, power is separated on 3 channels and filtered: one for the digital side, the second for analog and third for the clocks themselves. Then a second filter (LDOs) is applied to reduce noise further. In addition, Japanese oscillators from NDK are used, resulting in very low jitter clock – almost as good as the famous Crystek.
Finally, on the analog stage we can find film capacitors and some ceramics for a quiet DC to feed the DAC. Last but not least, a supercapacitor is added for an extra kick, especially with very low frequencies (some have nicknamed it the Bass…).
To sum up: the Allo MiniBoss can be easily considered the best DAC for Raspberry PI Zero, and its price difference among competitor is well justified by its superior implementation.
- Compatibility: RPI Zero/W , Volt+
- PSU: Power is taken from RPI and then heavily filtered for each rail. No independent PSU available.
- Not Working With: Sparky, Kali, Volt, Isolator
IMPORTANT NOTICE FOR EUROPEAN CUSTOMERS
Since we received some complaints for custom fees, Allo has decided to offer shipping from Europe as well. If you select “Shipping from Europe” all custom fees will be included in the order, and therefore prepaid by Allo. You can still order with “Shipping from India”, but VAT and custom fees may apply and been added when delivered.
IMPORTANT NOTICE FOR ALL CUSTOMERS
This product is shipped from India. International customers are responsible for any VAT and/or customs fees. These are beyond our control and will be based on declared value which is the board cost plus any options.