PROZOR – Poor man’s DAC or golden nugget in disguise ?

Got this Cheap Audio DAC from Amazon for experiments.
#Ad Check one here, they usually comer on sale pretty often –


Supported Sample Rates: 32KHz, 44.1KHz, 48KHz, 96KHz, 192KHz

Supported Resolution: 16, 24 bit

Supported Data formats: Supports Uncompressed 2 channel LPCM or PCM Digital Audio Signal Output; Provides

Interface/Receiver Chip: Cirrus Logic CS8416 ( datasheet below )

  • Complete EIAJ CP1201, IEC-60958, AES3,
  • S/PDIF-Compatible Receiver
  •  +3.3 V Analog Supply (VA)
  •  +3.3 V Digital Supply (VD)
  •  +3.3 V or +5.0 V Digital Interface Supply (VL)
  •  8:2 S/PDIF Input MUX
  •  AES/SPDIF Input Pins Selectable in Hardware Mode
  •  Three General Purpose Outputs (GPO) Allow Signal Routing
  • Selectable Signal Routing to GPO Pins
  • S/PDIF-to-TX Inputs Selectable in Hardware Mode
  • Flexible 3-wire Serial Digital Output Port

DAC chip: Cirrus Logic CS4344 – 10-Pin, 24-Bit, 192 kHz Stereo D/A Converter ( datasheet below )

  • Multi-bit Delta-Sigma Modulator
  • 24-bit Conversion
  • Automatically Detects Sample Rates up to 192 kHz.
  • 105 dB Dynamic Range
  • -90 dB THD+N
  • Low Clock-Jitter Sensitivity
  • Single +3.3 or +5 V Power Supply
  • Filtered Line-Level Outputs
  • On-chip Digital De-emphasis
  • Popguard® Technology

Input Interface: 1x SPDIF (Tosslink cable provided), 1xCoaxial

Power: 5V ( USB cable provided )

Output Interface: ( Stereo ) 1×3.5mm Jack, 2x RCA

Video Review

Detailed photos

Prozor DAC PCB Front
Prozor DAC PCB Front
Prozor DAC PCB Back
Prozor DAC PCB Back
PROZOR DAC - Clipping and positive bias
PROZOR DAC – Clipping and positive bias


Additional Resources ( Mods, Schematics, etc)

Modding Similar DAC ( In Japanese ):

Similar DAC design by Forum user, with schematic –

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Love to tinker all day long

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