<p>The C FOUR is a high-end 4-channel amplifi er that has been designed down to the last detail for ultimate sound quality.<br>Audiotec Fischer’s proprietary ultra low-noise and ultra low-distortion class A driver stage feeds a total of 32 hand-selected<br>MOSFET power transistors, resulting in an incredible damping factor of 1,000 for relentless control of every loudspeaker.<br>The intelligent regulation of the power supply assures stable conditions for the output stages and therefore<br>phenomenal output power independent of the cars battery voltage.<br>In combination with the optionally available digital input module HDM2, the C FOUR demonstrates the perfect transition<br>to the digital era. The HDM2 accepts digital audio signals up to 96 kHz sampling rate via its two optical inputs followed<br>by cutting-edge BurrBrown D/A converters with 32 bit resolution that transform the signals back to the analog domain.<br>Therefore the C FOUR is absolutely future-proof and perfectly prepared for the combination with our digital signal processors.</p>

TECHNICAL DATA

– Regulated DC-/DC power supply with start-stop capability down to 6 volts supply voltage
– Ultra low-noise and ultra low-distortion driver stages in class A confi guration
– Microprocessor-based monitoring of amplifi er status including temperature-dependent fan
control
– Extremely stable output stages comprising eight hand-selected MOSFET transistors per channel
for exceptional sound quality & performance
– Integrated active crossover with highpass, lowpass and bandpass filters
– Input Mode switch for flexible routing of the input signals
– Cutting-edge BurrBrown D/A converters with 32 bit resolution in combination with the
optional HDM2 module
– Massive 24-carat gold-plated power and speaker terminals
– Quad-layer PCB with extra-solid 70μ copper traces for lowest possible losses and SMD
(Surface Mounted Device) manufacturing technology

4 x 150 / 300 Watts @ 4 Ohms
4 x 220 / 440 Watts @ 2 Ohms
2 x 440 / 880 Watts @ 4 Ohms bridged

Inputs: 4 x RCA, 1 x Remote In
1 x Opt. Digital In (optional) Optional via HDM 2 module:
2 x Optical SPDIF (28 – 96 kHz)
Input sensitivity: RCA / Cinch 1 – 8 Volt
Outputs: 4 x Speaker output
Frequency response 10 Hz – 80.000 Hz
Highpass 15 Hz – 4.000 Hz adjustable
Lowpass 15 Hz – 4.000 Hz adjustable
Bandpass 15 Hz – 4.000 Hz adjustable
Slope highpass /lowpass 12 dB/Oct.
Signal-to-noise ratio 112 dB (A-weighted)
Distortion (THD) 0.007 %
Damping factor 1.000
Additional features: Adjustable, active crossover,
HDM slot, input mode
switch, Start-Stop capability

Dimension: 37.1 x 430 x 240 mm / 1.46 x 16.93 x 9.45″.