CIAudio D-200 MKII Manual

D•200 MKII Class D Monoblock Amplifier
Thank you for purchasing the D•200 MKII Power Amplifiers. These products are proudly
designed, assembled, and tested in the USA. We hope they will provide you with many years of
musical enjoyment.
Please read the entire contents of this manual before making connections to your audio system.

Design

The D•200 MKII represents the latest in Class D audio amplifier technology.
At the AC Input, we use our smooth-start circuit, which eases the start-up tasks, then to our
XDC•2 circuit to eliminate any DC voltage riding on your AC line. Power is then fed to our
custom multiple-output power transformer, then rectified by discrete Schottky diode bridges.
Several individual voltages are then filtered and regulated to provide power to various circuits.
The output circuit is unregulated with over 40,000uF of capacitance.
The amplification circuit is a custom UcD design with power output of
200 watts into 8 ohms / 375 watts into 4 ohms. This design is 90% efficient at full power and
produces little heat (wasted energy). The small amount of heat generated by the amplifier is
dissipated by the machined aluminum chassis acting as a heat-sink.
This low operating temperature means the internal components aren't subject to the heat cycles of
traditional amplifiers, yielding better reliability, more consistent performance, and longer life.

Specifications

Power Output: 200 watts @ 8 ohms/375 watts @ 4 ohms
Bandwidth: 50kHz
Frequency Response: 10Hz - 20kHz, +0dB/-0.5dB
Damping Factor: >1000
Input Impedance: 100k ohms
Gain: 32db (for use with VPC, PLC or other passive preamplifiers)
or 26db (for use with active preamplifiers)
Dimensions:8.5"w x 4.0"h x 13.5"d
Weight: 28 lbs (each)