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BOSS I2S V 1.2

Name: Allo BOSS I2S V 1.2
Brand: Allo

Allo

DigitalDACsHi-Res Players

Estimated price (community-sourced)

$65

About the BOSS I2S V 1.2

The Allo BOSS I2S DAC V1.2 is a Raspberry Pi HAT designed to overcome the Raspberry Pi's I2S clocking issues by providing independent low-jitter clocks using NDK SDA series oscillators and separate power rails filtered with high-quality LT3042 LDOs for digital, analog, and clock sections. It features the PCM5122 DAC chip supporting up to 32-bit/384kHz audio, with outputs via 2x RCA stereo and Allo Volt amp header. Compatible with Raspberry Pi 2, 3, and 4 (noted compatibility with RPi4 in some sources), and software like Volumio, Moode, RuneAudio, OSMC, and Roon Ready. Includes integrated EEPROM for automatic configuration, automatic frequency switching based on I2S input, and a dedicated Type-C USB for independent 5V/3A powering. Improved layout, film capacitors on analog stage, and ultra-low-noise regulators enhance sound quality, making it one of the best implementations of the PCM5122 DAC.

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