The Dan D'Agostino Momentum C2Z Preamplifier takes the revolutionary 4-circuit platform of the Momentum C2 and optimizes it for maximum electrical synergy with D'Agostino Z-Series amplifiers (such as the Momentum Z and Relentless Z). Available through Trimira Audio, Brisbane’s destination for cost-no-object audio engineering, the C2Z introduces a revised, current-capable FET output stage.
Because Z-Series power amplifiers operate with a lower input impedance that demands more drive current from source components, the C2Z’s high-current FET output stage reduces output impedance to an astounding 0.01 Ohms, ensuring absolute dynamic control, tighter bass definition, and unprecedented micro-resolution.
Key Features & Engineering Innovations
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High-Current FET Output Stage: Specially engineered to match the lower-impedance input stages of D'Agostino Z-Series power amplifiers, delivering significantly increased current drive with vanishingly low 0.01 Ω output impedance.
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Threefold Distortion Reduction: Drops total harmonic distortion to less than 0.00066% at full output—a more than threefold performance enhancement over standard preamplifier designs.
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Relentless-Derived 4-JFET Topology: Utilizes a complementary differential JFET push-pull input circuit, raising input impedance to 1 MΩ to ensure source components operate under ideal, unloaded conditions.
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Isolated Two-Chassis Power Supply: Housed in a separate lower enclosure connected via a heavy-duty 20-amp locking connector, keeping AC noise and magnetic interference away from delicate audio paths.
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Enhanced Low-Frequency Authority: High current output capability delivers incredible control, texture, and speed in the low frequencies—even at quiet, low-level listening volumes.
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Bi-Directional Remote & Optional DSM: Includes a machined aluminum LCD remote and offers an optional field-upgradable Digital Streaming Module (DSM) for 32-bit/384kHz PCM, DSD256, and native streaming via Tidal, Qobuz, and Roon.
Technical Specifications
| Feature / Metric |
Specification |
| Circuit Topology |
Fully balanced, high-current FET output, 4-JFET differential push-pull design |
| Frequency Response |
0.1 Hz – 1 MHz (-1 dB) / 20 Hz – 20 kHz (±0 dB) |
| Signal-to-Noise Ratio |
>110 dB (A-weighted) / >120 dB (unweighted) |
| Distortion (THD) |
<0.00066% @ full output |
| Gain |
+10 dB |
| Input / Output Impedance |
1 MΩ Input / 0.01 Ω Output |
| Analog Inputs |
3 Stereo Pairs Balanced XLR, 1 Stereo Pair Unbalanced RCA |
| Analog Outputs |
2 Stereo Pairs Balanced XLR, 1/4-inch (6.35mm) Headphone Jack |
| Dimensions (W x H x D) |
17.0 x 8.9 x 15.2 in / 43.2 x 22.6 x 38.6 cm |
| Weight |
73 lbs / 33.1 kg |
| Finishes Available |
Anodized Silver or Stealth Black |
