The Relentless Preamplifier to Relentless Z Preamplifier Upgrade elevates original Dan D'Agostino Relentless Preamplifiers to full Relentless Z flagship performance specifications. Available through Trimira Audio, Brisbane’s premier destination for ultra-high-end audio, this factory-authorized upgrade reimagines the preamplifier's output stage to unlock an extraordinary level of current delivery, signal integrity, and control.
By introducing D'Agostino's breakthrough Z-Series FET output topology, this upgrade optimizes the preamplifier to drive the lower-impedance input stages of the Relentless Epic 1600 Z and Relentless 800 Z monoblock amplifiers with immense authority—ensuring absolute system-wide electrical coupling.
Key Features & Technological Innovations
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Reimagined Current-Capable Z FET Output Stage: Re-architects the output section with a high-current Field-Effect Transistor (FET) design. This allows significantly higher current delivery and enhanced load stability under demanding dynamic peaks.
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Optimized Amplifier Synergy: Specially engineered to drive the re-architected input stages of Relentless Epic 1600 Z and Relentless 800 Z power amplifiers, creating a direct, high-current bridge between front-end and power stages.
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Zero Loading Loss & High Linear Coupling: Capitalizes on the inherently high input impedance and low-noise voltage-controlled characteristics of FETs, preserving microscopic detail, organic vocal warmth, and harmonic depth without source degradation.
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Dramatically Lower Distortion: Reduces total harmonic distortion across the spectrum, producing a blacker background, faster transient speed, and effortless micro-dynamic contrast.
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Enhanced Low-Frequency Control: High-current driving capability provides unmatched texture, pitch definition, and authority in low-frequency reproduction, even at low listening levels.
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Factory-Authorized Retrofit: Upgrades original three-chassis Relentless Preamplifiers without altering the iconic chassis aesthetics or gold-plated inter-chassis physical architecture.
Technical Specifications & Upgrade Comparison
| Feature / Metric |
Relentless Preamplifier |
Relentless Z Preamplifier |
| Output Stage Topology |
Standard Complementary Discrete FET |
High-Current Z FET Output Topology |
| Current Output Capability |
Standard High-Voltage Output |
Substantially Increased Current Output |
| Amplifier Synergy |
High-Impedance Coupling |
Low-Impedance High-Current Coupling (Optimized for Z Amplifiers) |
| Frequency Response |
0.1 Hz – 120 kHz (±0.0 dB) |
0.1 Hz – 120 kHz (±0.0 dB) |
| Signal-to-Noise Ratio |
>105 dB (unweighted) |
>105 dB (unweighted) / >110 dB (A-weighted) |
| Distortion (THD) |
<0.006% (20 Hz to 20 kHz) |
<0.00066% @ full output |
| Architecture |
3-Chassis Modular (Left, Right, Power Supply) |
3-Chassis Modular (Upgraded Internal Board Assembly) |
Arrange Your Relentless Z Upgrade at Trimira Audio
Connect with the high-fidelity specialists at Trimira Audio to confirm eligibility for your Relentless Preamplifier, request detailed upgrade pricing, or coordinate factory service logistics.
