Front Panel Description

The front panel accesses power on/stand-by and infrared sensor (remote control) functions. The power stand-by, bias, regulator, and Krell CAST LEDs, arranged in a triangle on the front panel above the power button, illuminate to indi- cate amplifier status.

FULL POWER BALANCED 700cx, 400cx, AND 300cx

STEREO POWER AMPLIFIERS

See Figure 1 on page 6

1 Power Stand-by LED

The blue power stand-by LED (top of LED tri- angle) illuminates when the back panel power breaker switch has been moved to on, engag- ing the input circuitry and placing the amplifier in stand-by mode.

2 Bias LED

The blue bias LED (lower left of triangle) illumi- nates after the front panel power button is pressed, indicating that the Sustained Plateau Bias III is engaged.

3 Power Button

Use the silver power button to power on the amplifier from stand-by mode.

4 Infrared Sensor

The infrared sensor receives the signal from a remote control.

5 Krell CAST LED

The red Krell CAST LED (center of triangle) illu- minates when a Krell CAST input on the back panel is connected to another Krell product with a Krell CAST output.

6 Regulator LED

The blue regulator LED (lower right of triangle) illuminates after the front panel power button is used to power on from stand-by mode, indicat- ing that the regulator is providing power to the output stage.

Note

An optional remote control is available for Full Power Balanced amplifiers.

FULL POWER BALANCED 750Mcx, 450Mcx, AND 350Mcx

MONAURAL POWER AMPLIFIERS

See Figure 2 on page 7

7 Power Stand-by LED

The blue power stand-by LED (top of LED tri- angle) illuminates when the back panel power breaker switch has been moved to on, engag- ing the input circuitry and placing the amplifier in stand-by mode.

8 Bias LED

The blue bias LED (lower left of triangle) illumi- nates after the front panel power button is pressed, indicating that the Sustained Plateau Bias III is engaged.

9 Power Button

Use the silver power button to power on the amplifier from stand-by mode.

10 Infrared Sensor

The infrared sensor receives the signal from a remote control.

11 Krell CAST LED

The red Krell CAST LED (center of triangle) illu- minates when a Krell CAST input on the back panel is connected to another Krell product with a Krell CAST output.

12 Regulator LED

The blue regulator LED (lower right of triangle) illuminates after the front panel power button is used to power on from stand-by mode, indicat- ing that the regulator is providing power to the output stage.

8

Krell Full Power Balanced X Series Power Amplifiers

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Krell Industries 400cx, 350Mcx, 450Mcx, 700cx Front Panel Description, Stereo Power Amplifiers, Monaural Power Amplifiers

700cx, 400cx, 300cx, 750Mcx, 450Mcx, 350Mcx, 700cx, 400cx, 450Mcx, 350Mcx specifications

Krell Industries is renowned for its high-performance audio equipment, particularly its line of powerful amplifiers that deliver premium sound quality. Among these, the 450Mcx, 700cx, 400cx, 350Mcx, and 750Mcx models stand out for their robust capabilities and advanced technologies, making them popular choices for audiophiles.

The 450Mcx is a class AB power amplifier capable of delivering an impressive 450 watts per channel into 8 ohms. This model is equipped with Krell's signature current-mode topology, which ensures a high level of linearity and a dramatic reduction in distortion. With a heavy-duty construction, including a massive power supply, the 450Mcx offers deep bass response and engaging midrange clarity.

Next in line is the 700cx, which pushes boundaries with 700 watts per channel. This amplifier features Krell's Advanced Power Supply (APS) technology, enabling it to maintain stability even under the most demanding speaker loads. The result is explosive dynamics and captivating detail, delivering a listening experience that is both immersive and exhilarating.

The 400cx is designed for versatility, providing 400 watts per channel in a compact form. This model utilizes Krell's patented CAST technology, which minimizes signal degradation, ensuring that the audio signal retains its integrity from input to output. It is ideal for both home theater and stereo applications, allowing users to enjoy a rich sonic palette.

The 350Mcx, while delivering a powerful 350 watts per channel, is designed with a focus on reliability and heat dissipation. The dual-transformer design and sophisticated thermal management system ensure consistent performance, even during prolonged usage. It embodies Krell's commitment to sound fidelity and performance longevity.

The 750Mcx takes performance to the next level with remarkable output capabilities. This amplifier is built with multiple output devices in a high-current configuration, designed to drive even the most challenging loudspeakers. Its refined circuitry contributes to a soundstage that is both wide and deep, enriching the listening experience.

In addition to these models, Krell also offers the 300cx and the 350Mcx, both designed to cater to a variety of audio preferences and configurations. Each unit is meticulously engineered to deliver ultrasensitive dynamics and a transparency that brings recordings to life.

These Krell amplifiers not only emphasize power and performance, but they also showcase luxurious design and durability. The combination of advanced technologies, such as current mode and APS, ensures that users receive a premium audio experience that stands the test of time. Whether for professional use or high-end home listening, Krell amplifiers are truly an investment in quality sound.