SPEC RSA-777EX Integreret forstærker

For the RSA-777EX we utilized “HIBIKI-ICHI” capacitors in the "Audio class switching power supply".
“HIBIKI-ICHI” was developed with the goal of rapid response and natural tone in collaboration with world renowned capacitor manufacturer "NICHICON". The “HIBIKI-ICHI” brings out even more texture for a more musical sound.
You can see the JAPANESE KANJI on the surface of capacitor. This KANJI is pronounced as "HIBIKI-ICHI", and ‘’HIBIKI” means vibrancy.

We further improved the "CLASS D" technology by using some newly adopted parts.　"CLASS D technology” is extremely sensitive, SPEC CORP. compared many parts and found parts optimal in our pursuit of “Real Sound”. This newly improved "CLASS D" brings you all of the musical information, so you can hear all the subtleties in the recorded material. By means of these improvements, the RSA-777EX is able to reproduce higher musical resolution and more natural tonal characteristics. You will notice it is very close to live sound.

The myth that a "CLASS D" is a DIGITAL AMPLIFIER is incorrect. SPEC CORP. has adopted "Pulse Width Modulation" in our "CLASS D". This "PWM" converts "signal amplitude" to "duration switching" through “ANALOG PROCESSING”. This system doesn't digitize the audio signal. This is in fact type of analog amplifier because magnitude resolution is infinite, same as in an analog amplifier. “CLASS D” with PWM contributes to bring you beautiful acoustical sound. In the past, some audio makers adopted delta sigma modulation for “CLASS D” this is quite simply “1bit digital” modulation.