<https://www.audioexcellence.ca/products/dan-dagostino-momentum-c2-preamplifier#product>
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"At the heart of the Momentum C2 Preamplifier is Dan D’Agostino’s revolutionary complementary four-circuit topology. This unique input stage circuitry sets a new standard for performance and precision, delivering unparalleled clarity and fidelity to your audio experience. The meticulous design ensures optimal mechanical and electrical isolation, guaranteeing pristine signal integrity throughout the critical preamplification stage.\nBuilding on the legacy of the Momentum HD Preamplifier, the Momentum C2 utilizes an array of four JFET transistors in a complementary, differential, push-pull arrangement. This design significantly increases input impedance and reduces noise. Its unique, discrete dual-complementary differential JFET input stage achieves exceptional performance and stability in every system configuration.\nFor less-than-audiophile-grade recordings, the transformative tone-control circuitry remains entirely transparent when inactive, ensuring zero impact on the signal path. Concealed behind a discreet door on the front panel, a headphone jack featuring independent amplifier circuitry offers a refined private listening experience.\nExperience the pinnacle of preamplification with the Momentum C2, where innovation meets unrivaled audio excellence.\n"
<https://www.audioexcellence.ca/products/dan-dagostino-momentum-c2-preamplifier>