Dan D’Agostino Progression Preamplifier

Housed in a separate chassis, the power supply makes use of extensive electrical and magnetic shielding to keep radiated interference away from critical preamplifier circuits. Internal circuitry filters RF noise on the AC power line and compensates for asymmetric power waveforms and DC on the mains. A second DC output is included to power future Progression source components.

Two analog meters, inspired by Swiss watch faces, function as signal meters during music playback. When volume is adjusted, the meter needles change to volume setting indicators. After adjustments are made, the meters revert back to signal meter operation. The meters also function as balance indicators when adjusting balance.
Specs
Frequency Response
0.1 Hz to 1 MHz, -3dB / 20 Hz to 80 kHz, +/-0.5dB
Signal-to-Noise Ratio
-95 dB, unweighted
Gain
+8 or +14 dB, Switchable
Finish
Silver or Black with Custom Finishes Available Upon Request
Distortion
< 0.018% THD+N, 20 Hz to 20kHz
Outputs
2 stereo pairs of balanced XLR

Power Consumption (at Standby)
< 40W
Analog Inputs
4 stereo pairs of balanced XLR, 2 stereo pairs of single-ended RCA

Control
RS-232, 2 12V trigger outputs
Product Class
Progression

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the Progression Preamplifier features an optional digital module. The digital module adds coaxial, Toslink, and USB inputs to the analog base model. Field upgradeable, the optional digital module can be added at any time. A fully differential DAC handles PCM signals up to 24 bit/384 KHz and DSD signals up to 4xDSD (11.2 MHz). This digital module feeds a discrete, fully complementary and balanced analog signal path from input to output. Negative feedback is not used anywhere in the Progression Preamplifier, nor is it necessary. Open-loop distortion is less than < 0.006% and the open loop bandwidth extends to over 100KHz.