Audio Database
AD-C2
Commentary

AD-2 series control amplifier.

There were two variations of AD-C2, AD-C2N and AD-C2B.
The AD-C2B is a low-cost type and consists of an attenuator and a film capacitor replaced with normal parts. The AD-C2B can be upgraded to the AD-C2N.

No equalizer amplifier is installed.

A 60-step attenuator is used for the volume part.
The high-performance thin-film resistor used in this attenuator is networked and has achieved excellent performance.

It consists of two modules, OP amp for signal and regulator for power supply.
The module section is mounted inside an aluminum die-cast case, and the inside is filled with carefully selected epoxy material with good sound quality. By integrating the module as a module, self-generated vibration is suppressed, and it is very resistant to external vibration. In addition, by modularization, electrical stability is improved, and DC servo circuits, which are widely used, are not required.

We have adopted only excellent transistors from domestic and overseas products for important transistors, and we have prepared specially the most important transistors.
In addition, an attenuator using a high-performance thin-film resistor or a precision resistor for sound is used for the resistors.

Film capacitors are used as smoothing capacitors for power supply circuits except for the power stage.

The power transformer, switch, printed circuit board, wiring material, etc. also use parts with consideration for sound quality.

Model Rating
Type Control amplifier
Input Phono, CD, Tuner, Aux1/2
Tape Monitor, Rec
Gain 16dB
External dimensions Width 430x Height 121x Depth 449 mm
Weight 16.7kg
Sold Separately Upgrade from AD-C2B to AD-C2N (¥ 450,000)