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CT-2300   Two-Channel Amplifier

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CT amplifiers come with their own adjustable rack rails and a separate faceplate designed to conceal all mounting hardware along the sides of the rack. The rails adapt easily to common rack depths while providing front to back support of the chassis. Hidden inside, our unique Intelligent Cooling Tunnel, or ICTunnel™ (pronounced Icy Tunnel) architecture and related circuitry quietly controls the amplifier temperature, ensuring optimum performance and reliability in enclosed, poorly ventilated environments.

Conventional high-end amplifiers use heatsinks with high thermal mass that rely on convection to cool the active circuits. They are slow to heat up and slow to cool down. Eventually they heat up their environment and as the air around them gets hotter, they become part of the problem. For this reason, high-powered amps and racks or cabinets don’t easily mix.

Conventional heatsinks are simply shaped pieces of metal, relying on placement and ambient air to extract heat from the amplifier. The ICTunnel™ is more sophisticated, acting like the human hypothalamus regulating body temperature. The ICTunnel™ utilizes an aluminum bonded-fin heatsink, of the kind used in high powered medical, laser and test equipment. It exploits the principle of low thermal mass, so it heats quickly but can also be cooled quickly. Inside its relatively small size are fins providing nearly 31 square feet of surface area. The key to its operation is how the fins are spaced—as close as possible to each other to maximize the surface area inside the tunnel, but not so close as to heat each other. The ICTunnel™ utilizes a noiseless fan along with pressure and temperature sensors to maintain the amplifier’s target temperature.

The CT series has everything you would expect from the world’s best amplifiers. They are designed for lifetime reliability. They have the power to effortlessly control the lowest impedances imaginable. They have the finesse to resolve the infinitely minute details that are the DNA of great sound. But CT amplifiers add a new dimension. For the first time the world’s best amplifiers can go right where you need them – in the home theater rack.


All tests un-weighted and 500kHz measurement bandwidth (except SNR).

Model CT-2300
Frequency response 1Hz – 80kHz, -3dB
Output power 300W rms into 8Ω (24.8 dBW)
600W rms into 4Ω (24.8 dBW)
Both channels driven
Harmonic Distortion <0.002% at 1 kHz balanced
<0.004% at 1 kHz single ended
Peak Output Voltage 150V peak to peak, 53V rms no load
136V peak to peak, 48V rms into 8Ω
Input Impedance 50kΩ balanced / single ended
Voltage gain 29dB balanced / single ended
Input level at clipping 1.88V rms balanced / single ended
Intermodulation Distortion

>90dB below fundamental into 8Ω balanced / single ended
>90dB below fundamental into 4Ω balanced / single ended

Signal to Noise Ratio -116dB at peak output into 8Ω
Measurement Bandwidth: 22kHz
Output impedance 0.015Ω @ 1kHz
Rated power consumption 420W @ 1/8th power into 8Ω
Width (including faceplate) 19” (483mm)
Width (excluding faceplate) 17” (432mm)
Depth (excluding connectors) 18.625” (473mm)
Height 6.97” (177mm)
Gross weight 109lbs (49.5kg)
Net weight 89lbs (40.5kg)
Mains voltage Specified on rear panel
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