Momentum HD Pre-Amplifier
   The Momentum HD Preamplifier builds on the award-winning platform of the Momentum Preamplifier. The new HD status represents the high dynamic and high definition improvements that have been achieved in this substantial upgrade. Advancements in the audio circuitry, power supply, and control sections are incorporated  in the new Momentum HD Preamplifier
    Download Momentum HD Pre-Amplifier Brochure...

Progression Pre-Amplifier
  The Progression Preamplifier adds new features previously not included in a D’Agostino preamplifier. 
Also new is the Bluetooth technology featured in the included remote control. The Bluetooth backbone extends the range of the remote by a factor of five and eliminates line of sight limitations that are inherent in IR remote controls.
  Download Progression Preamplifier Brochure...