TECHNICS SU-A70 Integrated Amplifier from Japan

Description: Concise G's integrated amplifier incorporates the technology of the G series of individual components. Amplifier The power amplifier section uses an original MOS class AA circuit.This circuit uses a pure Class A voltage control amplifier using power MOS-FETs as the amplifying element, and a Class B operating current supply amplifier composed of bipolar transistors, and separate amplifiers are responsible for voltage amplification and current supply to the speaker.This combines the advantages of both MOS-FETs and bipolar transistors. An R-core transformer is used for the power supply section.While the cross section of a typical transformer is square, the R-core transformer is circular. This allows the coil to be wound tightly and a uniform magnetic flux is formed. This has the advantage of extremely low magnetic flux leakage. Virtual battery operation is used for the power supply circuit.Various noises are mixed into the 100VAC power supply for home use, and in conventional power supply circuits, this noise enters the audio circuit through the reference potential generation circuit and pollutes the music signal.Virtual battery operation is a method that takes advantage of the characteristics of FET elements, and by skillfully blocking noise from the AC power supply, it protects the audio signal and improves sound quality. The parts used are audio-specific, and were selected after extensive listening tests. In particular, the power supply section uses Master Series electrolytic capacitors. This capacitor is based on the basic concept of a vibration-damping structure, and more than 20 types were prototyped by changing the components such as aluminum foil, electrolyte, and separator, and were adopted after thorough sound quality consideration. The housing is made of 2.5 mm thick aluminum, and the front panel is made of 7 mm thick aluminum. This results in a housing with excellent vibration damping and magnetic properties. The volume is made of gold-plated brushes and high-quality carbon resistors. Speaker terminals compatible with banana plugs are used.

Price: 228 USD

Location: iwate ken

End Time: 2024-12-13T09:27:33.000Z

Shipping Cost: 0 USD