Yamaha MX-50 - Features Overview; Hyperbolic Conversion Class A Circuit; High Dynamic Power; Speaker Support and Indicators

Thank you for purchasing the YAMAHA MX-50 stereo power amplifier.
ABOUT THIS MANUAL `
To obtain the finest performance from your new power amplifier, please
read this manual carefully, keeping 1t handy for future reference.
After vou know which PRECAUTIONS to take, the section CON-
NECTIONS will show you how to hook up the MX-50 to your control
amplifier and speakers. Operation of this power amplifier is explained
under FRONT PANEL CONTROLS AND THEIR FUNCTIONS.
If you have any trouble, the final section on TROUBLESHOOTING
tells you what to do before contacting your YAMAHA dealer.
CONTENTS
IMPORTANT:
Please record the serial number of your unit
in the space below.
Model: MX-50
Serial No.:
FEATURES
Hyperbolic Conversion Class A Circuit
High Dynamic Power
Two-Pair Speaker Support
LED Power Level Meters
Overload Protection Circuitry
Hyperbolic Conversion Class A Circuit
This new kind of circuitry, developed by Yamaha, eliminates the only
serious drawback of previous Class A operation amplifiers. These
had to switch to non-linear class AB operation above a certain load
current, causing a slight deterioration in the otherwise excellent
sound quality. The new Hyperbolic Conversion Class A circuit does
away with this problem, allowing your Yamaha MX-50 to deliver pure
class A operation constantly, without switching or cut-off, over its
entire power range.