The KPA series amplifiers are specifically designed for fixed installations where high sonic performance and ease of installation and management are paramount. Each KPA amplifier is equipped with analogue and K8 bus digital inputs. Used in conjunction with Klein+Hummel K8 products, the KPA series amplifiers provide a flexible, easy to manage signal and power train for houses of worship, performance halls, arenas and stadiums.

Output Power Specifications
	Stereo Mode			Bridged Mode
	2 Ohm	4 Ohm	8 Ohm	4 Ohm	8 Ohm	16 Ohm
KPA 2400	6000	4000	2000	12000	8000	4000
KPA 2290	4500	2900	1450	9000	5800	2900
KPA 2220	3000	2200	1100	6000	4400	2200

Watts per channel, EIAJ measurement conditions

K8 Control Features
Control Functions via K8	Power on/off, optional DSP all settings, thermal limiting, input current limiting, clip limiting, output voltage limiting, average output power limiting
Monitoring Functions via K8	Load impedance, temperature, input signal level, output voltage, output current
Additional Amplifier Protection	Load short shutdown and self recovery, thermal limiting, DC and infrasonic and ultrasonic frequency signal protection

Power Requirements
Power supply	115 - 230 V (±15%)
Power factor	More than 0.95 from 500 W to full power
Operating temperature	0° C, 45° C (32° F, 113° F)
Weight	12 kg (26.5 lbs)
Height x width x depth	44 (1HE) x 483 (19" EIA Standard rack) x 475 mm, 1.75" (1RU) x 19" (EIA Standard rack) x 18.7"
Audio Section
Bandwith (1 W, 8 Ohm)	20 Hz - 20 kHz ±0,2 dB
Damping factor (8 Ohm)	(20 Hz - 200 Hz) > 5000
Slew Rate (8 Ohm)	50 V/uS (input filter bypassed)
S/N ratio	>110 dB
Distortion THD	Max < 0.5 % from 1 W to full power (typically < 0.05 %)
Intermodulation SMPTE	Max < 0.5 % from 1 W to full power (typically < 0.05 %)
Intermodulation DIM	Max < 0.5 % from 1 W to full power (typically < 0.05 %)
Inputs	Balanced to ground, XLR female combo jack 6.3mm, K8 digital audio bus, RJ-45
Impedance	10 Ohm each leg, balanced to ground
Gain	26, 29, 32, 35 dB, user selectable
Outputs	Neutrik 4-pole Speakon (pins 1+ 2+ paralleled, 1-2- paralleled)
Link	K8 loop through, RJ-45, passive bus coupling
K8 channel select	Rotary switch, behind front panel, software override
Control	Directly via K8 bus
Termination Switch	4-position DIP
Digital Audio Format	48 kHz sampling rate, 24 bit, proprietary
Latency	½ millisecond worst case, analogue in to analogue out
K8 Rear Panel Indicators	Sync, Wink