https://audio-heritage.jp/MCINTOSH/amp/c100.html
A control amplifier that uses a dual chassis structure.
The power supply system for low noise and the remote controller for the operation system are incorporated in the upper chassis, and the signal system is integrated in the lower chassis. This prevents mutual interference and prevents sound quality deterioration.
The phono equalizer is carried. Furthermore, the newly developed transformer which used the silver wire for the coil is carried for MC cartridge. This transformer is housed in a mu-metal shield case.
The perfect balance circuit is adopted from an input to an output, and an unbalanced input is also converted into a balanced signal and transmitted. Moreover, the dedicated regulator is carried in each amplification stage, and it corresponds to the dynamic range of a vast source.
Furthermore, by carefully examining and using parts such as low noise metal film resistors and polypropylene capacitors, we are aiming for higher sound quality.
The digital control attenuator which uses a microprocessor is developed and carried in the volume, and the high precision of ± 0.05dB or less is realized.
The interface with the user is performed by an optical rotary encoder with 128 steps per rotation.
Volume and balance adjustments are indicated by a Mackintosh blue fluorescent tube, which allows you to display the gain value in 0.5 dB steps from the maximum of 15 dB to the minimum of -80 dB, or% of the full volume.
Also, when you move the balance knob, the value is displayed in dB, and it returns to the volume display after about 5 seconds.
The source trim function which makes the level of each input uniform even if the source is switched is carried.
Controls such as input switching employ a method using a microprocessor and a relay, and processing such as volume adjustment is also performed by a microprocessor.
Ruthenium vapor deposition is applied to the contacts of the relay, and reliability is improved by sealing with a glass tube filled with an inert gas that does not contain oxygen.
The Rec out selector is carried.
The power transformer of a double shield is carried.
The processor input / output terminal which can connect a graphic equalizer etc. is carried.
It is equipped with a power switch that can be reset if the microprocessor is locked due to a lightning strike or the like.
Comes with a wireless remote control.
