Product Description:Yisheng S0627 Balanced Preamp – High-End Finished Preamp for Audiophile SystemsThe Yisheng S0627 Balanced Preamp is the result of years of meticulous tuning and independent research by Yisheng Audio Studio. This preamp delivers a sound quality that surpasses conventional designs, offering an unparalleled listening experience for audiophiles.
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Key Features:- Premium All-Aluminum Chassis: Features a solid aluminum knob and a robust, elegant design.
- High-Quality Double-Sided Gold-Plated PCB: 2mm base with 75μm copper foil, ensuring superior signal integrity.
- Integrated Design: Combines transformer, rectification, filtering, voltage regulation, audio switching, and volume control into one cohesive unit.
- Star Grounding: Minimizes noise and maximizes signal-to-noise ratio.
- Relay-Based Volume Control: Utilizes 32 0.1% precision military-grade 718 factory resistors (achieving 0.1% channel balance) and 16 Japanese Takamisawa relays for 256-step volume adjustment. This pure resistor network eliminates popping noises and outperforms traditional carbon potentiometers in fidelity and transparency.
- Custom 25W Encapsulated Transformer: Made with Grade A silicon steel for clean and stable power delivery.
- High-End Components:
- ELNA Blue Electrolytic Capacitors (35V 4200μF) for filtering.
- ON Semiconductor LM317 Voltage Regulators for precise power regulation.
- Panasonic FC Series Electrolytes for decoupling.
- Genuine LM4562 Op-Amps for balanced amplification.
- Neutrik Gold-Plated XLR Connectors for reliable audio connections.
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Sound Quality:- Wide Soundstage: Creates an expansive and immersive listening experience.
- High Resolution: Exceptional detail retrieval across all frequencies.
- Smooth and Engaging: Lush midrange, extended highs, and tight bass make it highly enjoyable for long listening sessions.
- Natural and Fatigue-Free: Designed to be extremely listenable, with a sound signature that is both rich and refined.
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Usage Notes:- LINE2 Input: This input attenuates the signal, making it ideal for high-gain systems. If the volume is too low on the first step, use other inputs.
- Original Circuit Design: The circuit is an original creation by Yisheng Audio Studio, offering unique sound characteristics not found in conventional designs.
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Specifications:- Dimensions: 430mm (W) x 300mm (D) x 73mm (H)
- Voltage Options: 115V or 230V (selectable)
- XLR Pinout:
- 1: GND
- 2: +
- 3: -
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Notes:- Power Cable: Not included. Ensure your power supply matches the required specifications (115V or 230V).
- Installation: Ready to use out of the box, designed for seamless integration into your audio setup.
