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SI-300.2d Integrated Amplifier

  • SI-300.2d Integrated Amplifier
  • SI-300.2d Integrated Amplifier
  • SI-300.2d Integrated Amplifier
  • SI-300.2d Integrated Amplifier
  • SI-300.2d Integrated Amplifier
  • SI-300.2d Integrated Amplifier


The SI-300.2d integrated amplifier is yet another milestone as Cary Audio forges deeper into the new era of sought after premium audio systems. Cary Audio is highly regarded for the rich, warm, yet detailed sound of our components. This includes both analog components and digital components, as we have become a reference standard in both. Combining Cary Audio’s analog preamplifier and power amplifier sound with our spectacular digital section is a natural evolution, and one that is stunning to both hear and see.

The SI-300.2d mates a 300 watts per channel stereo Class A/B power amplifier with analog RCA and XLR inputs to a Class A analog preamplifier gain stage. The amplifier itself is biased to run Class A for an extended portion of the power output to deliver that rich, warm, yet detailed sound Cary Audio is known for. The digital section is a chip off our reference products thereby including only the best digital circuit topology, digital to analog conversion process, and technologies like our proprietary TruBit™ Upsampling and OSO™ reclocking features. Digital inputs include; XMOS USB capable of True native DSD up to 256 and PCM/DXD up to 32 Bit / 384kHz, as well as Coaxial (2), Optical, AES/EBU, and aptX® Bluetooth inputs. What’s more, all SPDIF and Bluetooth digital sources offer 10 TruBit™ selectable upsampling or PCM to DSD conversion options. On the analog side, the SI-300.2d includes 4 analog inputs (2-balanced XLR, 2-RCA), with one each of the XLR and RCA inputs offering true Cinema Bypass features.

The powerful solid state Class AB 300 watt x 2 stereo power amplifier ensures even the most difficult of loads are tamed while delivering Cary Audio’s famous tube like sound from its solid state output devices. With the SI-300.2d the externals are also something to behold. The center mounted machined aluminum volume control is flanked by a pair of gorgeous analog “Cary Blue” VU meters to the right while the left side text display shows all source information. All this trimmed off by a handsome aluminum frame highlighting its beautiful design elements.

Additional features include: a pre/subwoofer output, coaxial and optical digital outputs, IR hand held remote, trigger out, IR sensor input, and Ethernet and Wi-Fi for controlling the SI-300.2d with free iOS and Android apps.

The following section describes the SI-300.2d basic specifications. The specifications are subject to change without notice or obligation.

Digital Outputs Coaxial, Toslink operating at Sample Frequency (Fs) from 44.1 kHz to 192 kHz, 16 bit to 24 bit
Digital Input Sample Rates USB operating at Sample Frequency (Fs) from 44.1 kHz to 384 kHz, 16 bit to 32 bit, DSD 64, DSD 128 and DSD 256
BLUETOOTH operating at Sample Frequency (Fs) 44.1 kHz, 16 bit
AES/EBU, Coaxial, Toslink operating at Sample Frequency (Fs) from 44.1 kHz to 192 kHz, 16bit to 24 bit
Master Clock Jitter Below measurable levels
Digital Sampling Rates (Fs) 44.1 kHz to 768 kHz
Digital Filter 8x Oversampling Digital Filter
Digital/Analog Converters 2 channel AK4490EQ
BLUETOOTH CSR Bluetooth v 4.0 with aptX® low latency audio decoder
Analog Filter 3rd Order Bessel
Preamplifier Outputs Balanced XLR , Single – Ended RCA
Analog Input Single-Ended RCA x 2
Balanced XLR x 2
Analog Input Impedance 10 kΩ Unbalanced
20 kΩ Balanced
Power Amplifier Outputs 2 x 300W RMS in 8 Ω from 20Hz to 20KHz
2 x 450W RMS in 4 Ω from 20Hz to 20KHz
Circuit Type Solid State, Class A/B
Frequency Response 10Hz – 50KHz +/- 0.1dB (at 10db below rated output power)
Distortion (SMPTE-1M) < 0.5%
S/N Ratio >100dB, “A” Weighted
Protections Full short circuit, thermal, Ultrasonic, RF
Signal muting & current limiter
Control Trigger output 12.0 VDC x 1
IR control x 1
Communication Ethernet RJ45 full remote configuration interface
Wi-Fi 802.11 b/g/n
Power Input Configured at factory for either 110-120 or 220-240 VAC, 50-60 Hz
Power Consumption 950 Watts (4 ohm load at full output)
Finish Black powder coated matte chassis with silver or black aluminum faceplate
Weight 52 lbs
Dimensions 6.0″ H x 17.25″ W x 18.0″ D


Owner's Manual
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IR Remote Codes
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Instructions and Downloads for Updating USB Port for Windows 10 Driver
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USB Driver (v4.38.0) Zip File: For units already updated to use Driver v3.40, you can now use this latest Driver v4.38.0.
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Above is a Windows 10 compatible Driver. If you have not updated the USB port on your unit to use v3.40, then you will need to update the USB port in order to use this Driver. See "Instructions and Downloads for Updating USB Port for Windows 10 Driver" above.

USB Driver (v3.34) Zip File
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We recommend updating Software whenever a new Windows Driver update is done.

Review by Glenn Young on Secrets of Home Theater and High Fidelity
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Review by Hi-Fi Voice (Translated from Czech language)
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