Make your preamp connections | Classe Audio CA-M400 guide

conﬁguring ampliﬁer turn-on delay/amp no.

In a system that contains multiple Classé ampliﬁers, you may set the number of seconds of turn-on delay for each ampliﬁer, allowing each to turn on in the order you have speciﬁed, rather than all at once. This number also acts as an ID when using the CAN Bus. (Having several powerful ampliﬁers all turning on at the same time can sometimes stress the AC mains in your home, potentially leading to nuisance tripping of circuit breakers).

For example, to set the delay for two seconds (and to designate a particular ampliﬁer as #2):

•Place the ampliﬁer in standby (Standby LED on)

•Press and hold the Mode button until both Channel LEDs are lit. When released, both LEDs will blink to indicate the turn-on delay and current number of the ampliﬁer (e.g. once to indicate a one second delay and ampliﬁer #1).

•If you want to change the current ampliﬁer number setting, press and hold the Mode button again until both Channel LEDs are on.

•While continuing to hold the Mode button, press the Select button two times (the same number as the desired delay in seconds and the ampliﬁer number);

•Release the Mode button. The ampliﬁer will conﬁrm your choice by blinking the Channel LEDs twice.

4.Make your preamp connections.

With the ampliﬁer in standby (or disconnected from the AC mains), using high quality interconnecting cables, make the appropriate connections with the balanced or single-ended connectors (as conﬁgured in Step 3).

Make sure all the connections are snug, even if it means gently squeezing the outer shell of the RCA with pliers and reinserting it to tighten the connection.

5.Make your speaker connections.

Make the connection between the output terminals of the ampliﬁer and your loudspeakers, using high quality speaker wires.

Connect the black (–) terminals on the ampliﬁer to the black (–) terminals on your speaker, and the red (+) terminals on the ampliﬁer to the red (+) terminals on your speaker. If bi-wiring, run a total of four conductors between each ampliﬁer channel and its corresponding loudspeaker: two separate +/– leads, one for the bass and the other for the mids and treble. Make sure that no wires cross between the red (+) and black (–) terminals, at either end.

Make sure all the connections are snug and cannot be easily wiggled free, but do not overtighten them. If you can give the speaker wires a reasonable tug without movement, they are snug. Further tightening will not make a better connection, and (taken to the extreme) may damage the connectors.

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CA-M400 specifications

The Classe Audio CA-M400 is a high-performance power amplifier that encapsulates the essence of quality sound engineering and sophisticated design. Hailing from the renowned Canadian audio manufacturer Classe Audio, this amplifier is designed for audiophiles who demand both power and precision in their audio playback.

One of the standout features of the CA-M400 is its impressive power output. Delivering 400 watts per channel into 8 ohms and 800 watts per channel into 4 ohms, this amplifier is capable of driving a wide range of speakers with ease, ensuring that even the most demanding systems receive ample power. This power is supplemented by Classe's proprietary Current Feedback topology, which allows for high-speed response and minimal distortion, resulting in clear and dynamic sound reproduction.

The CA-M400 employs a dual-mono design, ensuring that each channel operates independently for enhanced imaging and soundstage depth. This configuration not only contributes to the clarity of audio reproduction but also minimizes crosstalk between channels, delivering a more immersive listening experience. The use of high-quality components and a robust power supply further enhances performance, providing exceptional stability and reliability even during peak demands.

Another defining characteristic of the Classe Audio CA-M400 is its system control capabilities. It features a comprehensive range of input options, including balanced XLR and single-ended RCA connections, allowing for flexible integration into various audio setups. Additionally, the amplifier supports remote power control, making it user-friendly and easy to manage within a home theater or stereo system.

Furthermore, the design of the CA-M400 exudes elegance and sophistication. Its sleek chassis is crafted with meticulous attention to detail, featuring a brushed aluminum finish and an intuitive front panel. The amplifier also features a highly efficient thermal management system, ensuring it remains cool during extended listening sessions without compromising performance.

In summary, the Classe Audio CA-M400 is a power amplifier that combines raw power with cutting-edge technology to deliver an unparalleled audio experience. With its formidable power output, innovative design, and exceptional build quality, it stands as a remarkable choice for anyone looking to elevate their audio setup to new heights. Whether it be for critical listening or high-octane movie nights, the CA-M400 promises to deliver an impressive sonic performance that will satisfy even the most discerning audiophiles.