DSPro Basic II vs Bel Canto Design DAC 1
The DAC 1's max sample rate is 96 kHz against the DSPro Basic II's 48 kHz, its signal-to-noise 112 dB against 104 dB, its thd 0.003% against 0.001%, and its output voltage 2.0V RMS against 3.4V RMS.
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The DSPro Basic II is a digital-to-analog converter introduced by Theta Digital as a simpler, more cost-effective version of their flagship DSPre processor. It features 8x oversampling with dual 18-bit digital signal processors, handling sample rates of 44.1kHz and 48kHz. Inputs include two digital coaxial RCA jacks, and it outputs analog audio via unbalanced RCA jacks, with an additional digital S/PDIF output. The unit offers a frequency response of 20–20.5kHz with minimal deviation (+0, –0.1dB), a signal-to-noise ratio of 104dB, and total harmonic distortion (THD) at full output of less than 0.001%. The output level is 3.4V RMS minimum. The chassis measures 19" wide by 2¼" high by 14" deep and weighs approximately 17 lbs. The design emphasizes power supply improvements and isolation of critical digital sections to enhance low-level resolution and dynamic contrast. It was highly regarded in its time for sound quality and remains a notable example of 1990s DAC technology. The product is no longer manufactured or available new.
DAC capabilities and digital audio processing
Analog signal output specifications
Input and output connections
Size, weight, and appearance
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The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The DAC 1's max sample rate is 96 kHz against the DSPro Basic II's 48 kHz, its signal-to-noise 112 dB against 104 dB, its thd 0.003% against 0.001%, and its output voltage 2.0V RMS against 3.4V RMS.
The SFD-2's signal-to-noise is 110 dB against the DSPro Basic II's 104 dB, its thd 0.050% against 0.001%, and its output voltage 3.5V RMS against 3.4V RMS. Both share max sample rate (48 kHz).
The airDAC's max sample rate is 96 kHz against the DSPro Basic II's 48 kHz, its signal-to-noise 106 dB against 104 dB, its thd 0.002% against 0.001%, and its output voltage 2.1V RMS against 3.4V RMS.
The DAC-19 Anniversary's max sample rate is 96 kHz against the DSPro Basic II's 48 kHz, its signal-to-noise 108 dB against 104 dB, and its output voltage 2.5V RMS against 3.4V RMS. Both share thd (0.001%).
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