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Perpetual Technology P1A DSP Correction Engine
Perpetual Technology P1A DSP Correction Engine
The P-1A is a digital signal processor — Perpetual Technologies calls it a digital correction engine. It can up sample any input frequency to 96kHz, it can interpolate any input data to 24 bits, and it is claimed to reduce jitter to vanishingly low levels.
Local pickup or $11 flat rate shipping within Australia
The P-1A’s digital inputs are I-squared-S mini-DIN, AES/EBU, and coaxial RCA, and the digital outputs are identical. The P-1A can accept incoming information in 16- to 24-bit formats at sampling rates from 8kHz to 108kHz (192kHz is optional through I-squared-S input). Output bit resolution is user selectable and includes settings for 16, 18, 20, and 24 bits. The output sampling rate is also user selectable at 44.1kHz, 48kHz, 96kHz, and optional 192kHz through I-squared-S output. Perpetual Technologies recommends using the supplied I-squared-S cable when lashing the P-1A and P-3A together, and I agree. Even though the supplied I-squared-S cable looks like it cost maybe $1 in large quantities, it sounded better than my reference digital coax cable, which costs more than $250. Higher-quality I-squared-S cables are supposed to be in the works.
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