Cayin Pearl 30i 30th Anniversary Tube Amplifier

Introduction

The Cayin Pearl 30i is a flagship integrated tube amplifier designed to celebrate the 30th anniversary of Cayin Audio. This high-end stereo amplifier combines traditional tube technology with innovative engineering, offering exceptional sound quality and versatility for audiophiles.

Design and Build

The Pearl 30i features a dual-chassis design, separating the power supply unit from the amplifier unit. This separation minimizes interference and ensures stable power delivery. The power supply includes four transformers—two for each channel—providing independent high-voltage (800 W) and low-voltage (200 W) supplies per channel, resulting in a total power capacity of 2000 W1 2.

The chassis is constructed with high rigidity and vibration-damping treatments, ensuring optimal signal-to-noise ratio (S/N ratio). Custom silver-plated copper cables connect the two units, further enhancing performance3.

Tube Configuration

At its core, the Pearl 30i utilizes premium vacuum tubes:

• Preamp Stage: Two Mullard CV4004/12AX7 tubes.
• Driver Stage: Four Tung-Sol 6SN7GTB tubes.
• Power Stage: Eight Tung-Sol KT170 tubes arranged in Class AB push-pull mode1 3.

An auto-bias system ensures precise operation of the KT170 tubes, extending their lifespan and eliminating the need for manual adjustments2.

Performance Modes

The amplifier offers two operational modes:

1. Triode Mode: Produces 145 watts per channel with a smooth, harmonious sound ideal for vocals and instrumental music.
2. Ultralinear Mode: Delivers 230 watts per channel with dynamic performance and extended frequency response, suitable for punchy and energetic music1 3.

Additionally, users can select between "Dynamic" or "Soft" timbres by adjusting the operating current of the KT170 tubes2.

Connectivity

The Pearl 30i provides extensive connectivity options:

• Four RCA unbalanced inputs.
• One XLR balanced input.
• RCA and XLR pre-in connections for use as a power amplifier.
• Subwoofer output for enhanced bass integration.
• Speaker terminals compatible with both 4-ohm and 8-ohm speakers1 3.

User Interface

A dot-matrix display on the front panel shows active settings, while controls are accessible via toggle switches or an included remote control. The volume is adjusted using a high-precision JRC MUSES72320V controller with 106 steps for fine-tuned adjustments2.

Aesthetic Appeal

The Pearl 30i boasts an elegant design featuring an anodized aluminum front panel, wooden top plates, and solid silver-colored feet. Its craftsmanship extends to hand-wired point-to-point circuitry using premium components like AudioCapX capacitors and Nichicon audio-grade filters3.

Conclusion

The Cayin Pearl 30i represents a milestone in high-fidelity audio engineering. With its meticulous design, advanced tube technology, and versatile features, it stands as a testament to Cayin's dedication to excellence over three decades.

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