Connecting the W-8, Balanced Operation

MOON W-8 Dual-Mono Power Amplifier

Connecting the W-8

Prior to making any connections or removing the XLR jumpers, the power amplifier must be turned off and the AC cable disconnected for at least 1 minute.

1.Connect the input cables running from your preamplifier’s outputs, whether balanced or single-ended, to the amplifier’ s XLR or RCA inputs respectively. We highly recommend that you use the balanced XLR inputs (provided that your preamplifier has balanced outputs) to take full advantage of MOON W-8Dual-Mono power amplifier’s capabilities. Please refer to the next section “Balanced Operation” on for further information.

Do not connect cables to both the XLR and RCA inputs at the same time. Damage to both the W-8and the connected equipment can result that is not covered by warranty.

Don’t hesitate to use high quality interconnect cables. Poor quality interconnect cables can degrade the overall sonic performance of your system. It is recommended, though not mandatory, to use balanced interconnects between your preamplifier and the W-8when using long cable runs (i.e. more than 3 meters in length).

2.Connect your speakers, with the cables of your choice, to the W-8’s speaker binding posts. Take care to respect the polarity (“+” , “-” ) of the output. Once again, don’t hesitate to use high quality speaker cables. Poor quality speaker cables can degrade the overall sonic performance of your system. Both pairs of speaker connectors on each channel are connected together. Consequently, it doesn’t matter which pair you use.

3.Connect the supplied AC power cable to the IEC receptacle, located on the amplifier’s rear panel. Alternatively, if you wish, you may use a dedicated high-performance AC cable designed for high current applications. Ensure that the AC wall outlet you use has a functioning ground. For the best sonic performance, it is preferable that you plug your W-8directly into a dedicated AC outlet and avoid using an extension cord. If you have the time and willingness, consider installing a superior quality AC wall outlet such as a hospital grade Hubbell.

4.In order to obtain the maximum performance from your audio system, we strongly recommend that the detachable power cord not come into physical contact with either the interconnect cables or the speaker cables running to and from your W-8. In the event that this can’t be avoided, you should ensure that any cables coming into contact with each other are crossed at ninety degree angles to minimize the contact area.

Balanced Operation

When using an unbalanced interconnect, the audio signal runs through both the center wire and the shield/ground wire. Any noise picked up by this interconnect (ie. nearby magnetic fields such as an AC power cord) will be reproduced by the amplifier and heard through the loudspeakers. Conversely, a balanced interconnect has three separate conductors; one for the ground and two for the actual signal. These two signals are identical except that one is 180 degrees out of phase with the other. For example, when one conductor is carrying a signal of +5 Volts, the other will be carrying a signal of –5 Volts. When these two inverted signals on a balanced line are input into a differential power amplifier such as the MOON W-8, any noise picked up by the interconnect will be eliminated since a differential circuit amplifies only the difference between these two signals: Noise on a balanced interconnect will be equal on both conductors and therefore not be processed.

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Connecting The W-8 / Balanced Operation

W-8 specifications

The Simaudio W-8 is a high-end power amplifier that exemplifies exceptional audio performance and craftsmanship, catering to audiophiles seeking uncompromised sound quality. As a part of Simaudio's Moon series, the W-8 is engineered to deliver power and precision, making it an ideal choice for serious music enthusiasts.

One of the hallmark features of the W-8 is its impressive power output. With an ability to deliver 250 watts per channel into an 8-ohm load, and 500 watts into 4 ohms, the W-8 provides ample headroom to drive even the most demanding speaker systems. This power is coupled with a very low distortion level, ensuring that the integrity of the audio signal is maintained regardless of volume levels.

The W-8 incorporates Simaudio’s proprietary technologies to enhance performance. One such technology is the use of fully balanced, differential circuitry, which significantly reduces noise and distortion, delivering a crystal-clear sound. Additionally, the W-8 employs a class A/AB amplification design that combines the efficiency of class AB operation with the finesse of class A. This hybrid approach allows for linear performance across the audio spectrum while preserving dynamic range.

Another notable characteristic of the Simaudio W-8 is its robust build quality. Housed in a sleek aluminum chassis, the amplifier features an elaborate thermal management system that ensures optimal performance during extended listening sessions. With a dual mono design and separate power supplies for each channel, the W-8 minimizes crosstalk and enhances stereo imaging.

In terms of connectivity, the amplifier provides extensive options, including XLR and RCA inputs, as well as speaker binding posts that accommodate a variety of cables. This versatility ensures that the W-8 can seamlessly integrate into various audio setups, allowing for greater flexibility and customization.

Moreover, Simaudio places a strong emphasis on user experience, which is evident in the W-8's intuitive layout and operational simplicity. Its understated aesthetic ensures it fits well into any audio system while also standing out as a statement piece.

In conclusion, the Simaudio W-8 is an amplifier that excels in performance, design, and technology. Its powerful output, advanced circuitry, and premium build quality make it a standout choice for audiophiles who desire an amplifier that can deliver a truly immersive listening experience. Whether for music production or refined listening, the W-8 stands as a testament to Simaudio's commitment to high-fidelity audio.