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YHF-397BG Stereo Component System 

High Quality Sound 

Pure Direct Switch 

When this switch is engaged, the signal 
bypasses the tone, loudness, balance 
controls, and other circuit, being fed 
directly to the discrete power amplifier. It 
travels in a straight line from the volume 
control, through the high-gain short, 
direct path for maximum signal purity. 

 

Super Audio CD and DVD-Audio 
Ready with Extended Frequency 
Response 

Rather than the usual 20Hz–20kHz 
frequency response, Yamaha has given 
the RX-397 the ability to handle 
frequencies from 10Hz to100kHz (1dB). 
Although the ear cannot hear the higher 
frequencies, it has been proven that these 
harmonics can affect sound reproduction 
quality. Super Audio CD, DVD-Audio and 
other new formats will be able to output 
sound over this range, so the RX-397 is 
fully compatible with products using these 
formats. 

 

Linear Damping 

Level variations due to high amp 
impedance tend to reduce an amplifier’s 
damping factor, and frequency variations 
cause it to fluctuate. This circuit cancels 
the effect of these variations, maintaining 
a high, stable damping factor, for superior 
articulation of all sounds and better 
frequency response. 
 

High Dynamic Power, Low-
Impedance Drive Capability 

The RX-397B is capable of delivering 
large amounts of reserve power for 
accurate reproduction of high energy 

peaks. This emphasizes the music’s 
dynamic qualities and provides a 
sharper sound image. 
 

Discrete Amplifier Configuration 

The CDX-397 ‘s CD buffer amplifier, 
volume control amplifier and power 
amplifier are all constructed from carefully 
selected discrete parts. This configuration 
provides superior signal quality. 
 

Intelligent Digital Servo System 

Conventional tracking servo circuitry 
cannot completely overcome errors 
caused by disc defects, war page, dust 
and so on. This system uses a 

microcomputer to monitor the signal, 
adjusting pickup tracking and focus, as 
well as spindle motor speed, to 
compensate for any problems. 
 

Low-Impedance Power Supply 

Because every signal part affects sound 
quality, Yamaha uses nothing but the 
best. The special Low-Impedance Power 
Supply, in the CDX-397B uses extra thick 
wires to ensure that power is absolutely 
stable even under low impedance 
conditions. 
 

Display Dimmer 

The CDX-397’s front display dimmer 

function lets you dim the display when 

you darken the room to suit your mood 
while listening to music. The brightness of 
the display can be set to Normal, Slightly 
Dim and Dim. Dimming the display also 
reduces any chance of noise interference 
from the LCD for highest audio quality. 
 

Aluminium Front Panel 

An aluminium front panel is used to 
effectively shield sensitive low-level 
circuitry from external noise and 
electronic radiation generated by dimmer 
switches, HVAC, fluorescent lighting and 
video displays (CRT, LCD, Plasma). 
 

CD-R/RW Playback 

The CDX-397B CD players can handle CD-
R and CD-RW discs with ordinary songs. 
(Note that some discs may not play.) 
 

Wealth of Playback Functions 

In addition to ordinary play, there are a 
variety of ways you can enjoy the musical 
selections on your CDs. Random Play 
plays all the songs in a random order. If 
you want to hear them in a certain order, 
you can use the 40-Track Program Play 
function. There are also several repeat 
modes: Single Track, Entire Disc, Random 
Play, Programme Play and A-B (for 
repeating all songs between two  
points on the disc). 
 

Auto Space Insert 

Lets you add a short pause at the touch 
of a button on the remote control while 

recording to ensure that there is sufficient 
space between selections. 
 

3-Mode CD Text Display 

Get information about the CD currently 
playing right on the CD player’s display. 
The 3-mode CD Text display shows the 
CD’s title, the artist’s name and the title of 
the track. 
 

Peak Search 

Gives you better sounding recording by 
searching the disc for the loudness part 
and playing it for a few seconds so you 
can set the proper recording level. 
 

Convenient Operation 

CD-Tape Synchronised Record Start 

You’ll have smooth recording starts each 
time, because Synchronised Record Start 
puts the deck into the recording mode a 
few seconds before starting CD play. 
 

RoHS Compliant 

This environmentally friendly unit fully 

complies with the EU’s RoHS (Restriction 
of Hazardous Substances) standards. 
 

Speaker Cabinet Has New Design 
with Innovative Cross-Bracing 

The cabinet is built with internal cross-
bracing having a unique wedge structure. 
R-beveling reduces diffraction effects. 
This type of cross braced structure is used 
in top class speakers and Yamaha 
engineers are able to make the most of its 
advantages. It produces a tighter sound 

and the increased strength cuts down 
unwanted vibration. 
 

Simply, Cosmetic Design Concept 

This system provides Hi-Fi component-like 
design that same dedication to sound and 
design excellence is behind the creation of 
the top-class component. 
 

Beautiful Yamaha Piano Finish 
Speakers 

As the world’s leading piano  
manufacturer, Yamaha has a long history 
of woodworking expertise. The E810 
speakers have the same luxurious and 
environmentally friendly finish as 

our grand pianos.  
 

Other Notable Features 

• 

Remote Control Input/Output Terminals 

• 

Tape Monitor Switch 

• 

5 Audio Input Terminals with Phono 
Input Terminal 

• 

Impedance Selector (8 ohms/4ohms) 

• 

3-mode tape edit: random, automatic 
and manual 

• 

Skip play (Track skip) 

• 

Direct track access and index search 

• 

Index number display and search 

• 

4-mode time display 

• 

Last memory 

 

Speaker Design 

CD/DVD 

AUX 

MD 

Tape 

Phono 

Remote 

Inp

u

ts

 

MD 

Tape (Record) 

Remote 

Outputs 

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