4-channel PA amplifier with 5kW of powerThe QDA-4400 PA amplifier offers ultra-high output power paired with a low weight and small overall height. The amplifier uses a Class D output circuitry. Featuring a modern switch-mode power supply, the amplifier provides up to 5 kW peak power and weighs less than 10 kg. This makes this model particularly attractive for mobile applications. The amplifier can be used flexibly in stereo operation, parallel operation or in bridge operation. Extensive protective circuits will protect the amplifier and the speakers connected.

PA amplifier with SMPS, 4 x 1100 W / 4 ohms, 4 x 650 W / 8 ohms

• 4-channel PA amplifier with class D circuitry
• 4 x 1100 W/4 ohms
• Low weight and height due to integrated switch mode power supply
• Reliable power amp with high impulse stability for a wide range of applications (e.g. compact PAs, multi-way PAs, international concerts)
• Speaker switch-on delay
• 3 operating modes can be selected (stereo, parallel or bridged)
• 4 level controls for precise level adjustment
• Input sensitivity adjustable
• LED VU meter and LEDs for activated protective circuit (protect), overload (clip), and signal per channel
• Complete protection set
• Highly efficient front-to-rear air routing
• Electronically balanced inputs via XLR mounting jacks, with XLR feed-through outputs
• Speaker outputs via lockable Speaker plugs
• Rugged steel chassis with aluminum front panel
• Housing design: (19") 48.3 cm rack installation 2 U

Power supply:	100-240 V AC, 50/60 Hz
Power consumption:	830 W 1/8 power
Output power:	4 x 650 W RMS (8 ohms)
	4 x 1100 W RMS (4 ohms)
	2 x 2000 W RMS bridged (8 ohms)
Power connection:	Mains input P-Con (blue), mounting version Power supply cord with safety plug (provided)
Frequency range:	20 - 20000 Hz
S/N ratio:	>100 dB
Circuitry:	Class D
Connections:	Input: 4 x line via 5-pin XLR
	Output: 4 x line via 5-pin XLR
	Output: 4 x Speakers via Speaker built-in socket (f)
Input sensitivity:	39,3 dB; 37 dB; 32 dB switchable
Input sensitivity:	ca. 0,775 V; ca. 1,0 V; ca. 1,81 V switchable
Distortion:	<0,1 %
Housing design:	(19") 48.3 cm rack installation 2 U
Width:	48,3 cm
Height:	8,9 cm
Depth:	46,1 cm
Weight:	9,50 kg
Damping factor:	>500
Slew rate:	>10 V/µsec
Crosstalk:	>65 dB
Voltage gain:	39.3 dB
Input impedance:	20 kohms (balanced), 10 kohms (unbalanced)
Protection:	Soft start, short circuit, over load, over heat, clip limit, RF and VHF signals
Cooling:	2 temperature-controlled fans, front-to-rear
Controls:	Power switch, level control, mode switch (stereo,parallel,bridged), input sensitivity
LED indicators:	protect, clip, signal, -5 dB, -10 dB, -20 dB (per channel), dB/V mode
Construction:	Steel chassis, aluminum front