P-1a

About the P-1a

The Perpetual Technologies P-1a is a digital-to-digital processor and digital correction engine, not a standalone D/A converter. It accepts digital audio through I²S, AES/EBU, and coaxial S/PDIF inputs, and provides corresponding digital outputs. Its DSP can upsample and re-clock incoming signals, with input resolution support from 16 to 24 bits and input sample rates from 8 kHz to 108 kHz; optional I²S operation extends support to 192 kHz. Selectable output resolutions are 16, 18, 20, or 24 bits, with standard output rates of 44.1, 48, and 96 kHz and optional 192 kHz I²S operation. The P-1a uses DSP algorithms for resolution enhancement, jitter reduction, and amplitude/frequency correction intended to compensate for speaker and room response irregularities. Software updates can be installed through its USB interface or, optionally, by replacing EEPROM chips. It is commonly used with the Perpetual Technologies P-3a DAC and P-3b power supply. The unit measures approximately 5.5 × 8.25 × 1.75 inches and weighs about 4 pounds.