ClasseCT 2300Classe CT 2300 AmplifierOVERVIEW SPECIFICATIONS PRODUCT REVIEWS MORE INFORMATION CT-2300 TWO-CHANNEL AMPLIFIERClassé Custom Theater series components offer a beautiful and purpose-built solution for installing world-...3250.00

Classe CT 2300 Amplifier [Expired]

no longer for sale


Classé Custom Theater series components offer a beautiful and purpose-built solution for installing world-class audio components in professional equipment racks. Our commitment to building the world’s best amplifiers has not changed, but the way our customers use them has. High-end amplifiers today are as likely as not to be installed in equipment racks or custom cabinetry and often serve as the foundation of a home theater. Their sheer size, weight and heat render them impractical in many installations. 

The revolutionary Custom Theater (CT) series is our response to this reality. They are the first world class high-end amplifiers specifically tailored to modern custom installations. They deliver ultra high-end performance, exceptional reliability and are designed to be easily installed. We say that they are rack advantaged, because of a variety of features tailored to the demanding requirements of this environment.

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.

There are two very minor flaws on the very top of amp see pics from the rack.

I bought the unit from Listen UP Denver, CO in Sept., 2010.  It drove by B & 's 801's D's.


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

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



>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: 22 kHz

Output impedance


0.015Ω @ 1 kHz

Standby power


3W @ 120V; 5W @ 230V

Rated power


763W @ 1/8th power into 8Ω



19” (483mm) (including faceplate)



17” (432mm) (excluding faceplate)



18.625” (473mm) (excluding connectors)



6.97” (177mm)

Gross weight


109lbs (49.5kg)

Net weight


89lbs (40.5kg)

Mains voltage


Specified on rear panel

Seller Information


Last 12 months

Member since June 2016

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