Soulnote P3 Preamplifier

SOULNOTE P3 Preamplifier

Revolutionary Type-R Circuitry

At the heart of the P3 is the Type-R discrete non-NFB balance amplifier, finely tuned for preamplifier use. This advanced circuitry ensures exceptional detail, stunning signal-to-noise (S/N) ratio, and the power to drive high-performance preamplifiers effortlessly.

Ultra High-Quality Naked Foil Resistors

Equipped with 156 ultra-precise naked foil resistors—developed to aerospace-grade standards—the P3 minimizes audio distortion and enhances sound purity. These resistors, paired with 1Ω emitter resistors and 3.9Ω output resistance, deliver astounding detail and presence.

High-End Audio Volume Control

The P3's 144-step resistance-switching audio volume control features 0.5 dB increments for precision. Using custom-designed RSR-2-12D relays, this system maintains audio vibrancy and fidelity across all volume levels.

Innovative GND Switching Input Selector

Eliminates GND loops and noise intrusion by adopting a GND and signal switching method. The use of RSR-2-12D relays ensures seamless operation and uncompromised audio quality.

Dual Monaural Construction

Independent left and right channels feature dedicated I/O terminals, circuit boards, and transformers, guaranteeing unmatched stereo separation and three-dimensional soundscapes. A fully separate control GND enhances natural sound expression.

Massive Power Transformer

With 600 VA of total capacity, including dual 280 VA analog power transformers, the P3 delivers exceptional drive capabilities. This robust power management elevates your entire audio system's performance.

Floating Construction & Vertical Transformer Mounting

The floating design eliminates mechanical stress for pure, natural audio quality. The vertically mounted transformers minimize harmful leakage flux, enhancing overall sonic precision.

Optical Rotary Encoder with Double Bearings

A smooth, responsive aluminum volume knob with double bearings and a flywheel ensures precise volume control with zero backlash, offering an ergonomic touch and refined handling.

3-Point Spike Grounding

Three precision-mounted spikes eliminate vibrations from the transformers, stabilizing sound quality and enhancing the listening experience.

Audiovisual Source Bypass

Features XLR and RCA circuits with audiovisual source bypass settings for fixed volume and output with zero gain, offering flexibility for diverse system setups.

GND Anchor and Ceramic Insulation

Complete separation of left, right, and control GND channels, combined with ceramic-insulated chassis, produces expansive sound fields with clear, natural tones.

Multiple Device Connection System

Sync multiple devices using UART signals for seamless multi-amp setups while avoiding GND loops, making it ideal for advanced configurations.

RSR-2-12D Relays

Each P3 houses 94 custom ultra-low-loss relays, delivering signal fidelity comparable to direct wiring.