Cary Audio SI-300.2D Integrated Amp

Description

The Cary Audio SI-300.2D is a high-end solid-state integrated amplifier that combines immense power, advanced digital capabilities, and a sonic character designed to bridge the gap between traditional transistor designs and tube-like musicality. Positioned as one of Cary Audio’s flagship integrated amplifiers, it reflects the company’s long-standing reputation for blending technical performance with engaging, natural sound.

At its core, the SI-300.2D delivers a formidable 300 watts per channel into 8 ohms, doubling to 450 watts into 4 ohms, making it capable of driving even demanding loudspeakers with ease. Unlike many high-power amplifiers that prioritize brute force over finesse, Cary engineered this model to maintain tonal richness and fluidity—qualities often associated with tube amplification.

The amplifier uses a Class A/B topology, with biasing that allows it to operate in Class A for a portion of its output range. This contributes to its smooth, detailed presentation while preserving efficiency and control at higher output levels. The result is a sound that balances authority with refinement—capable of delivering both explosive dynamics and subtle musical nuance.

Design and Features

Beyond its amplification stage, the SI-300.2D is essentially a complete modern audio hub. It incorporates a high-performance DAC based on AKM chips, supporting high-resolution PCM up to 384 kHz and DSD up to DSD256 via USB. Cary’s proprietary TruBit™ upsampling and OSO™ reclocking technologies further refine digital playback, reducing jitter and enhancing detail retrieval.

Connectivity is extensive, including balanced XLR and unbalanced RCA analog inputs, as well as USB, coaxial, optical, AES/EBU, and Bluetooth digital inputs. Networking features such as Ethernet and Wi-Fi allow remote control and integration into modern streaming systems.

Visually, the SI-300.2D stands out with its distinctive front panel, featuring large analog VU meters (“Cary Blue”), a central volume control, and a clean display. The build quality is substantial, with a 52-pound chassis and premium materials that reflect its high-end positioning.

Sound Performance and Character

Sonically, the SI-300.2D is designed to challenge the stereotype of solid-state amplifiers as clinical or sterile. Cary describes it as delivering “richness and remarkable agility reminiscent of tube amplifiers”, while still providing the grip and control needed for modern speakers.

Listeners often note its combination of deep, controlled bass, a smooth and detailed midrange, and extended, airy highs. The amplifier excels at maintaining composure at high volumes, with a wide, stable soundstage and strong imaging. Its ability to remain musical while delivering high output is one of its defining strengths.

Review Highlights

Professional impressions emphasize both its power and refinement:

• “Looks fabulous, sounds great… built to an extremely high standard.”
• “Extremely high-powered… will play pretty much anything.”
• Cary describes its sound as “breathtaking clarity and depth” with tube-like qualities.

From the broader audiophile community, Cary gear is often associated with a natural, dynamic, and engaging sound, reinforcing the SI-300.2D’s design goals.

Key Specifications

• Type: Solid-state integrated amplifier with DAC
• Power Output: 300 W per channel (8Ω), 450 W (4Ω)
• Amplifier Class: Class A/B (biased toward Class A operation)
• DAC: Dual AK4490EQ chips
• Digital Inputs: USB, AES/EBU, coaxial, optical, Bluetooth
• Analog Inputs: 2× XLR, 2× RCA
• Frequency Response: 10 Hz – 50 kHz (±0.1 dB)
• Signal-to-Noise Ratio: >100 dB
• Distortion: ~0.5% SMPTE-IM
• Streaming/Control: Ethernet, Wi-Fi, app control
• Special Features: TruBit™ upsampling, OSO™ reclocking, home theater bypass
• Dimensions: 17.25″ W × 6″ H × 18″ D
• Weight: 52 lbs (24 kg)

Final Impression

The Cary Audio SI-300.2D stands out as a powerhouse integrated amplifier with audiophile refinement and modern versatility. Its combination of high output, sophisticated digital processing, and musical presentation makes it equally suited for demanding loudspeakers and high-resolution digital systems. For listeners seeking a single-box solution that delivers both authority and emotional engagement, the SI-300.2D is a compelling and enduring choice.