APart Audio CHAMP-2

APart’s Champ series realizes what many in the audio industry deemed impossible: an amplifier without cooling fans that is capable of delivering high-end musical sound, high dynamics, high reliability.

No fan
A fanless amplifier seems the logical thing, and until now-, the idea never seemed to work for high quality amps with high output power. The electronics of a typical class AB amplifier with high output power simply produce more heat than the unit is able to dissipate. Thus, installers stick to fan-cooled models and get out of bed to replace a fried amplifier.

APC power management circuitry has been designed for Champ series amplifiers. It is one of the most intelligent amplifier protection circuits ever designed, simply because it does the job without interfering with the typical dynamic character of music.

• Bridge-mono operation 8 ohm : 750 W
• 2 channel mode 8 ohm : 200 W / ch
• 2 channel mode 4 ohm : 350 W / ch
• 2 channel mode 2.7 ohm : 450 W / ch
• Dynamic capacity at 2 ohm, both channels driven : 600 W / ch
• Input impedance / sensitivity unbalanced (RCA) / 4 Ohm : 10 kOhm / 1 V 0dBV
• Input impedance / sensitivity balanced (XLR) / 4 Ohm : 20 kOhm / 1 V 0 dBV
• Frequency response (0, -0.5 dB) : 10 Hz – 50 kHz
• THD : < 0.05 %
• IMD : < 0.06 %
• Noise : >100 dBA
• Gain : 30 dB (36 dB bridged)
• Damping factor : >200
• Dynamics and level control : APC, switchable for 2-3 or 4-8 ohms
• Power amp circuit design : High current, high voltage class G
• Efficiency (dynamic program of 10 dB, 1 V input) : 70 %
• Protection circuits : DC, HF, clip, overcurrent, short-circuit
• Temperature protection : 95°C/ch + transformer 105°C
• Cooling : convectional, no fan
• Power consumption : 15VA idle, 600VA full program, 1KVA peak
• Mains power requirements : 230VAC, 50Hz
• Net dimensions (cm) (W x H x D) : 48.3 x 4.4 x 36
• Net weight : 7.5 kg