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PA-3900 3U class H professional power amplifier (2×900W at 8 honm)
MAIN FEATURE 1. Splendid color display, display the overload protection, current speed gears of fan, audio signal, voltage of AC, connection mode.2. Brushed aluminum front panel with unique streamline design.3. Perfect dynamic ,comprehensive current limit ,overload and chopped protection.4. Intelligent-controlling fan for radiating.5. Perfectly combine H technology and topology.6. AI insert and SMT automatical technique for strict control the consistency of the products.7. Adopt A class standard steel disc and fine copper high-powered toroidal transformer to achieve driving bass, mellow alto and clear treble.8. Adopt original high-powered enthusiast Toshiba audio tube.9. With USA branded twin tube ,circuits is optimized to perfection.10. Suitable for large stage performances, KTV rooms, pubs and conference rooms etc. TECHNICAL SPECIFICATIONSRMS 8Ω/STEREO: 900W+900W20Hz-20KHz 4Ω/STEREO: 1400W+1400WTHD+N 0.1% 8Ω/BRIDGE: 2800WFrequency Response ref 1k20Hz-20KHz: ±0.2dBTHD+N : 200SR : >20V/μs Gain RL 8Ω : 40dBInput Impedance : balance 20K / unbalance 10KOutput Circuitry: 2-tier Class HAC Power : AC220V / 50Hz±10%Amplifier and Load Protection : Soft boot,DC,short circuit,over load,overheat,Clipping distortionInput CONNECTORS : Female XLR Type/ Male XLR Type Output CONNECTORS: NL4 Speakon socket,Binding postControls and LEDs—Rear Panel: Stereo,Splice, Bridging option switch, Bridging incicator, Sensitivity option switch,Grounding switch,30Hz HI-PASS switch.Cooling mode: Stepless automatic transmission cooling fan.
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