{"product_id":"allo-mini-boss-phat-pi-zero-master-dac-discontinued","title":"Allo Mini BOSS pHAT - Pi Zero \"Master\" DAC [discontinued]","description":"\u003cp\u003eThere are many DACs for Raspberry Pi Zero. Most of them low-priced, carbon copy of datasheet, slave DACs.\u003c\/p\u003e\n\u003cp\u003eAllo decided to do something different. . . . introducing the first \u003cstrong\u003eMaster DAC\u003c\/strong\u003e for the Pi Zero, based on PCM5122 with many improvements over the standard circuit!\u003c\/p\u003e\n\u003cp\u003eThe Raspberry Pi has one major problem with audio - The clocks coming from CPU can only output one frequency clock perfectly, resulting in problems such as jitter with audio files sampled at 44Khz.\u003c\/p\u003e\n\u003cp\u003eSo what's the solution? Enter the master mode for i2s. Instead of the Raspberry Pi giving the clock on the line, the Mini BOSS DAC itself sends the clocks and the Raspberry Pi sends the data!\u003c\/p\u003e\n\u003cp\u003eOur Mini BOSS DAC is unique; First we separate the power on 3 channels and filter it: one for the digital side, the second for analog and third for the clocks themselves. Then we take the filtered power and use a second filter (LDOs) to further quiet the noise. Note that we use some of the best LDOs on the market (LT3042 from Linear). In addition, we use Japanese oscillators from NDK for a very low jitter clock - almost as good as famous Crystek.\u003c\/p\u003e\n\u003cp\u003eFinally, on the analog stage the Mini BOSS DAC uses a film capacitor (not ceramic) for a quiet DC to feed the TI IC (ceramic exhibits some piezo distortion, not what you want in analog stage). Not happy with this, we have added a supercapacitor for an extra kick when analog stage is asking (like deep bass).\u003c\/p\u003e\n\u003cp\u003eWhat we have achieved, in our opinion, is the best analog implementation of the PCM5122 on the market, while at same time correcting the clock problem from RPI.\u003c\/p\u003e\n\u003cp\u003eThe Mini BOSS DAC is a very solid implementation of the PCM IC that will give you the greatest bang for your buck. It will sound great no matter what you throw at it - this was our goal and promise to you.\u003c\/p\u003e\n\u003cp style=\"margin: 0px 0px 12px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 14px; line-height: inherit; font-family: 'Roboto Slab', serif; vertical-align: baseline; color: #5d5656;\"\u003e\u003cspan style=\"margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: bold; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eFeatures\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"margin: 0px 0px 20px 20px; padding-right: 0px; padding-left: 20px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 14px; line-height: inherit; font-family: 'Roboto Slab', serif; vertical-align: baseline; list-style-position: outside; list-style-image: initial; color: #5d5656;\"\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eMini BOSS is a Master DAC (Master DACs are compatible only with Raspberry Pi Zero \u0026amp; Zero W)\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eCompatible with RPi Zero \u0026amp; Zero W\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eDedicated 384 kHz\/32bit high-quality DAC PCM5122 for best sound quality\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eAudio output connectors: 2 x RCA (Left \u0026amp; Right )\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003epHAT size\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eDAC SNR is 112dB\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eDAC THD+N @ -1dBFS are –87dB\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eFull Scale Output of DAC is 2.1Vrms\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eDynamic Range of DAC is 112dB\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eSampling Frequency ranges from 8 kHz to 384 kHz\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eUltra-low-noise voltage regulators \u0026amp; LPF for optimal audio performance\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eNoise level: 66.27uVrms\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eIntegrated EEPROM for automatic configuration (with write-protection)\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eAutomatically switching frequencies according to the input I2S signals\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eDual low jitter NDK crystal oscillators for Master Clock generation\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eWith 45.1584\/49.1520 MHz Ultra Low Phase Noise Oscillators\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 0px 0px 12px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 14px; line-height: inherit; font-family: 'Roboto Slab', serif; vertical-align: baseline; color: #5d5656;\"\u003e\u003cspan style=\"margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: bold; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eDownloads\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"margin: 0px 0px 20px 20px; padding-right: 0px; padding-left: 20px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 14px; line-height: inherit; font-family: 'Roboto Slab', serif; vertical-align: baseline; list-style-position: outside; list-style-image: initial; color: #5d5656;\"\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003e\u003cspan style=\"font-size: inherit;\"\u003e\u003cspan style=\"margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: bold; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; color: #c51f51; text-decoration-line: none;\"\u003eBOSS DAC Support \u0026amp; Download Page\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"margin: 0px 0px 5px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003e\u003cspan style=\"margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: bold; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline;\"\u003eTechnical Specification Page\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allo","offers":[{"title":"Default Title","offer_id":46375167950905,"sku":"wts1787257816151","price":25.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0795\/9176\/8121\/files\/allo-mini-boss-phat---pi-zero-master-dac-discontinued_1.jpg?v=1787257825","url":"https:\/\/myoutfitstore.shop\/products\/allo-mini-boss-phat-pi-zero-master-dac-discontinued","provider":"My Store","version":"1.0","type":"link"}