
CUSTOM THEATER ELECTRONICS
CT-2300
TWO-CHANNEL AMPLIFIER
TWO-CHANNEL AMPLIFIER
CT-2300
Classé has been designing and manufacturing high-end electronics in
Montréal since 1980. While recent innovations in digital design—culminating in the ground breaking SSP-800 and CT-SSP—have gained the
company recognition, Classé is still best known for amplifiers. Critics and
consumers worldwide rely on the consistent performance of Classé amplifiers, as do the recording engineers at Abbey Road Studios and elsewhere,
who use them every day to monitor and master recordings.
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.

CUSTOM THEATER ELECTRONICS
TWO-CHANNEL AMPLIFIER
CT-2300
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
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
Standby power consumption 3W @ 120V; 5W @ 230V
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
Prices and specications subject to change.
We are not responsible for typographical errors.
Printed in Canada on recycled stock.
USA & Canada • Classé Audio Inc.
5070 François Cusson • Lachine • Quèbec • Canada • H8T 1B3
Tel +1.514.636.6384 • Fax +1.514.636.1428
www.classeaudio.com • email: cservice@classeaudio.com