Uses Toshiba power tube

 

SPECIFICATION	AD-1.4	AD-1.8	AD-3.0	AD-3.6	AD-4.0
8Ω Stereo Output Power	400W	700W	900W	1100W	1300W
4Ω Stereo Output Power	600W	1050W	1350W	1650W	1950W
8Ω Bridge Output Power	1200W	2100W	2700W	3300W	3900W
4Ω Bridge Output Power	5200W
Frequency Response	20Hz-20KHz
THD+N(20Hz-20KHz)	<0.05%	<0.05%	<0.08%	<0.08%	<0.08%
Slew Rate	30V/μs	30V/μs	35V/μs	40V/μs	44V/μs
Damping Factor(8Ω, 20Hz-1KHz )	>250	>300	>300	>300	>400
Voltage Gain (8Ω rated power)	36dB	38.2dB	40.2dB	40.8dB	42.4dB
Output circuitry	Class AB	Class H	Class H	Class H	Class H
Signal to Noise Ratio	≥95dB	≥95dB	≥98dB	≥100dB	≥102dB
Crosstalk(20Hz-20KHz)	>70dB
Input Sensitivity (8Ω)	0.775V/1.0V/1.4V RMS
Input Impedence	20KΩ balance / 10 KΩ unbalance
Cooling	Two variable speed fans, rear-to-front air flow
Connectors (each channel)	Input : XLR Output: Speakon
Controls	Front: AC switch, CH 1 and CH2 gain knobs; Rear: Sensitivity switch, GND switch, Stereo/Parallel/Bridge switch 30Hz low cut switch, clip limiter switch, 150 Hz low pass switch
Indicators	Front: POWER-blue LED, SIGNAL-green LED, CLIP-Red LED, PRO-Red LED, Rear: BRIDGE-orange LED
Amplifier Protection	Short circuit, thermal, overload, clip limiter, DC Voltage, soft start, ultrasonic and RF protection
Net Wight / Gross Weight	18kg/22.5kg	21kg/25.5kg	24kg/28.5kg	40kg/44.7kg	42kg/46.7kg
Demension (mm)	483x462x89mm		483x133x462mm
Packing dimensions	560x580x150mm		560x580x215mm
Power Requirements	100V, 120V, 220V, 240V, 50-60Hz