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The SU-2 is designed around a fully-balanced architecture, from digital input through analog output. Balanced XLR outputs reduce noise over longer cable runs and help preserve signal integrity when feeding active monitors or balanced amplifiers.
An AES/EBU input provides a professional-grade digital connection with strong noise rejection and clock stability. It's great for monitoring chains and desktop systems where reliability matters. Coaxial and optical inputs are also available for broader source compatibility.
The SU-2 uses the ES9039Q2M DAC chip, chosen for its low distortion and high dynamic range. Measured THD+N reaches as low as 0.00006 percent, with SINAD up to 123.5 dB on balanced output.
The analog stage uses four OPA1612A operational amplifiers arranged in a symmetrical layout. This design prioritizes channel matching and low crosstalk. The result is stable linear amplification across a wide bandwidth, with consistent left-right balance and controlled noise.
The SU-2 measures 5.9 inches wide, 1.7 inches tall, and 5.2 inches deep (150 × 42.5 × 133.1 mm). It fits easily on a desk or shelf without crowding other gear. Power-off memory and automatic input detection reduce the need for repeated adjustments.
The front-panel indicator array shows input selection, signal lock status, channel activity, and sampling rate at a glance. Sampling rate changes are briefly indicated, while left and right channel indicators respond to incoming audio. It is functional feedback, not decoration.
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