Trilogy 903 Linestage Preamp
Best tube-driven linestage for audiophiles seeking pure, transparent sound quality.
Experience unparalleled sound quality with the Trilogy 903 Linestage Preamplifier, designed for true fidelity and transparency. Its audio circuit, a testament to Nic Poulson's expertise, features a 6H6П super tube operating in pure Class A for exceptional linearity. The preamplifier offers extensive control flexibility through an intuitive menu system, allowing for personalized settings. With a robust power supply and optional phono stage supporting MM/MC cartridges, the 903 provides supreme adaptability and peerless construction, making it the heart of any high-fidelity music system.
$3999.00
Owner Satisfaction
4.7
/ 5
Category Rank
86
/ 491
#86 in Phono Preamps
Price vs Category Average
-42%
Below average
Circuitry Type
Vacuum Tube
/ Vacuum Tube
Who it's for
- System builders integrating complex, high-end audio components
- Audiophiles seeking absolute sonic clarity and natural musical reproduction
- Listeners demanding the cleanest signal and most dynamic performance
Who should skip it
- Owners with limited rack space or minimalist equipment setups
- Budget-conscious buyers looking for entry-level or mid-range audio gear
- Users preferring low-maintenance equipment without recurring service needs
Performance breakdown
Sonic Transparency
Pure Class A circuitry delivers an exceptionally clear and uncolored signal.
Tube Linearity
The 6H6П super tube ensures consistent, distortion-free performance across the spectrum.
Phono Versatility
Seamlessly handles both MM and MC cartridges for diverse vinyl setups.
Build Integrity
Robust construction and active shunt regulation provide rock-solid operational stability.
Control Interface
Intuitive menu navigation makes deep customization surprisingly straightforward for the user.
System Integration
Flexible connectivity options allow it to anchor even the most complex systems.
Key Specs
Circuitry Type
Vacuum Tube
Output Connection Types
RCA
Input Impedance
50K Ohms
Equalization Curve Support
RIAA
Total Harmonic Distortion
Less than 0.05% A weighted
Dimensions
465*312*106 (W*D*H) unit dimensions
Weight
10 Kg
Power Supply Type
Internal
Features
- Peerless sound quality and transparency
- Intuitive control menu via rotary encoder
- Class A gain stage with 6H6П super tube
- Stable power supply with active shunt regulation
- Optional phono stage with MM/MC support
- Highly configurable for personalized settings
- Supreme flexibility and construction quality
- Remote operation via IR handset or TAS link
What customers say
The Trilogy 903 Linestage Preamp earns high praise for its exceptional sonic transparency and neutrality. Audiophiles appreciate how the unit effectively disappears, letting source material present with uncolored fidelity. Its hybrid design successfully merges tube warmth and natural timbre with solid state speed and deep bass control. Dynamics are described as both explosive and nuanced, creating a highly engaging experience. Build quality, including the robust chassis and external power supply, contributes to a very low noise floor, improving micro detail retrieval. While premium priced, the consensus is that the 903’s performance rivals or surpasses much costlier competitors, offering strong value in the ultra high end market. It is celebrated for dramatically elevating system musicality and resolution.
Know before you buy
The 903 is designed as a linestage preamplifier, but it offers an optional phono stage module. This upgrade supports both Moving Magnet (MM) and Moving Coil (MC) cartridges, allowing you to connect your turntable directly to the unit.
The 903 utilizes a 6H6П super tube within its gain stage. This tube is operated in pure Class A to ensure high linearity and the transparent, natural sound quality Trilogy is known for.
You can navigate the unit's settings through an intuitive menu system controlled by a front-panel rotary encoder. For added convenience, the preamplifier also supports remote operation via an IR handset or the TAS link system.
With an output impedance of less than 200 Ohms, the 903 is highly compatible with a wide range of power amplifiers. Its robust power supply and active shunt regulation ensure a stable, clean signal regardless of your system's demands.
The 903 offers a wide frequency response of 2Hz to 50KHz, with a variance of only +/- 0.5dB. This ensures that the unit captures the full spectrum of your music with high fidelity and minimal coloration.
The unit measures 465mm wide, 312mm deep, and 106mm high. Given its 10kg weight and the nature of vacuum tube electronics, ensure you place it on a stable, well-ventilated surface.
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