Onkyo CS-420 manual Wrat Wide Range Amplifier Technology, Optimum Gain Volume Circuitry

CS-420

CD RECEIVER SYSTEM

Quality Audio Playback with a Sense of Convenience and Versatility

Here’s an integrated audio system that will more than adequately handle the wide-ranging frequencies of your music, including CDs, MP3s or radio signals. And if you’re already actively buying and storing MP3 files, teaming the CS-420 CD receiver system with the iPod through the RI Dock (DS-A1) for the iPod is an attractive option for bringing superior audio fidelity to your MP3s. The CS-420 uses Onkyo’s time-tested WRAT (Wide Range Amplifier Technology), Optimum Gain Volume Circuitry and discrete output stage circuitry to ensure that incoming audio signals are output with a quality befitting that of larger systems. Also, the accompanying speakers incorporate Onkyo speaker developments designed to deliver a sound with clarity and purpose. These speakers are further enhanced by a high-gloss piano finish that nicely complements the elegant aluminum front panel of the CD receiver. Stylish, graceful with compelling sound quality—the CS-420 CD receiver system is a welcome addition to any home.

WRAT (Wide Range Amplifier Technology)

Originally developed for our high-end A/V receivers, WRAT is a collection of Onkyo’s proprietary technologies that achieves three fundamental goals in the pursuit of superior audio:

1)Wider frequency response;

2)Reduced amplifier distortion at high volume;

3)Better control of current and electro/mechanical kick-back from speakers. By incorporating WRAT into the CS-420 ensures that you’ll get audio playback quality from your MP3s and CDs that just isn’t possible from poorly conceived audio components.

Optimum Gain Volume Circuitry

Conventional volume attenuation methods must initially drop a signal close to the noise floor at low volumes. Even though the signal is only tainted with a little noise, the amount increases when the signal is amplified. Onkyo’s Optimum Gain Volume Circuitry adjusts the gain so that less than half the amount of attenuation is necessary. The signal never comes close to the noise floor, and thereby eliminates the possibility of noise contamination that plagues conventional volume attenuation methods.

Discrete Output Stage Circuitry

It is all too common for manufacturers of mini systems to employ just one circuit at the output stage. With multiple transistors crammed onto this single circuit, excess heat is generated and the audio signal is compromised. The CS-420

is different. It uses discrete amplifier technology similar to that found on our high-end receivers. Keeping the transistors separate at the output stage enhances cooling, so the CS-420’s longevity is extended and interference to the audio signal is reduced.

iPod Playback through Onkyo’s RI (Remote Interactive) System Capability With Onkyo’s RI system capabilities, you can add other Onkyo components to the CS-420 and operate them through one single remote control. RI capability also gives you the opportunity to integrate the iPod with your CD receiver system through Onkyo’s RI Dock for the iPod (DS-A1). Simply connect the dock to

the CS-420, place your iPod in the dock and relish the fuller sound that just can’t be experienced through headphones. RI capability also gives you remote operability over your iPod for hands-off control over your digital music. The DS-A1 is compatible with most iPod models, and will also accommodate the latest iPod releases.

2-Way, Bass Reflex Speakers Incorporating Onkyo’s Own Speaker Developments

Designed to neatly complement the CD receiver in any room of the home,

the CS-420’s 2-way, bass reflex speakers are designed to playback music with no interference and maximum efficiency. The Advanced Onkyo Microfiber (A-OMF) diaphragm woofer is made from a three-layer construction that absorbs vibrations that can adversely affect the quality of the emitted sound. This thin yet rigid diaphragm enables an extremely fast and accurate response—essential for the reproduction of quality audio. Also, a V-Line Edge on the suspension suppresses any extraneous vibrations that can cause the sound to deteriorate significantly. Capping it off, an Aero Acoustic Drive (slit duct) has been included to reproduce a sound that is both responsive and spacious it its delivery.