OPERATION

cycle and power loads in the neighborhood change, the bias reading will fluctuate a bit. This is normal and therefore not critical.

Another word about the meter readings. The louder you play the CAD 120S the more current it will draw. Playing loud, especially in the ultra-linear mode will peg the meters at 200 ma. This is normal and there is a protection circuit built into the metering circuit to prevent damage to the analog meters. Pegging the meters is fun!

BREAK-IN PERIOD

The tubes, capacitors and output transformers take approximately 100 hours use to settle in for peak performance. The CAD 120S will sound good right out of the box but it will improve within a short time. After the first 50-100 hours you will notice increased depth and tighter bass. This break-in period is true with quality vacuum tube audio amplifiers.

TUBE REPLACEMENT

If it becomes necessary to replace the tubes in the amplifier, a matched set of output tubes of the same name brand should be used. A new tube kit is available from Cary Audio. You should get years of service from the rugged KT-88 output tubes. The input and driver 6SN7 tubes can last even longer. Other output tubes may be used in the CAD 120S power amplifier; 6L6, 6CA7, KT-66, 6550C, KT-90, KT-99 or EL-34 tubes are all acceptable for use in the output stage of the CAD 120S. Use the same current setting for any of these tubes as described in the bias set up.

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Cary Audio Design CAD 120S owner manual BREAK-IN Period, Tube Replacement
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CAD 120S specifications

Cary Audio Design has long been synonymous with high-fidelity audio equipment, and their CAD 120S amplifier exemplifies this commitment to quality and innovation. The CAD 120S is a stunning piece that bridges the gap between the classic analog warmth of tube amplification and the precision of modern technology.

At the heart of the CAD 120S lies a premium dual-triode design using 6550 power tubes, offering an impressive output of 120 watts per channel. This robust power allows the amplifier to drive a wide range of loudspeakers with ease, delivering a dynamic listening experience. The amplifier features a push-pull circuitry configuration, which enhances linearity and minimizes distortion, ensuring that both subtle nuances and loud crescendos are reproduced faithfully.

One of the standout features of the CAD 120S is its sophisticated power supply. Designed with separate power transformers for each channel, it maintains low noise levels and provides exceptional headroom. This approach not only enhances sonic clarity but also contributes to the longevity of the components, a hallmark of Cary's design philosophy.

Additionally, the CAD 120S boasts a fully-balanced input stage, which is essential for preserving the integrity of the audio signal over longer cable runs. The use of high-quality components throughout the signal path ensures that the amplifier delivers a warm, rich sound, devoid of harshness. Cary Audio Design's commitment to craftsmanship is evident in the CAD 120S's construction, featuring a sturdy chassis and a meticulously finished front panel that is as visually appealing as it is functional.

For audiophiles, the CAD 120S is not just an amplifier; it is a gateway to a lifelike musical experience. Its ability to handle a wide frequency range contributes to a soundstage that is expansive and immersive. The depth and detail provided by this amplifier allow listeners to engage with their favorite records in a way that is both fulfilling and exciting.

In conclusion, the Cary Audio Design CAD 120S is a remarkable amplifier that fuses traditional tube warmth with cutting-edge engineering. Its powerful output, balanced design, and high-quality components make it a standout choice for any serious music lover looking to elevate their audio system. With its timeless design and exceptional performance, the CAD 120S continues to build on Cary's legacy of audio excellence.
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