The A-903MK2 Mixer Power Amplifier controls and mixes up to eight independent input signals. The Mixer Power Amplifier delivers up to 30 watts of output power. Optional plug-in modules are available for use with mixer power amplifier to provide versatility for a wide range of operating applications.
TOA A-903MK2 Features
- Controls and mixes up to 8 independent input signals
- Delivers up to 30 watts of output power
- A-903MK2 80W single-channel mixer amplifier1
- Type8-channel mixer power amplifier
- Power RequirementAC mains, 120 V, 60 Hz
- Power Consumption60W
- Output Power30W RMS
- Power Band Width(D) 20 〜 20,000 Hz, 0.5% THD, (T) 50 〜 20,000 Hz, 0.5% THD
- Frequency Response
- (D) 20 〜 20,000 Hz, ±1 dB
- (T) 20 〜 15,000 Hz, ±1 dB, (T) 20 〜 20,000 Hz, +1 dB, -3 dB
- THD0.02% at 1kHz, rated output
- Inputs
- Eight Input Ports : Each port accepts any input modules
- One Bridging Input/Output
- Input Sensitivity / Impedance
- Input Port #1 to #8 : 100 mV/10 kΩ
- Bridging Input/Output : 100 mV/3.3 kΩ
- Preamp OUT / Power Amp IN1000 mV into 600 Ω/1000 mV, 10 kΩ
- Outputs (T)=transformer, (D)=direct
- Main (T) : 4 Ω, 25 and 70 volts, balanced, Main (D) : 8 Ω, unbalanced
- Aux : 10 kΩ, 1 V
- Otuput Regulation (1kHz)
- (D) Less than 0.5 dB, no load to full load
- (T) Less than 1.0 dB, no load to full load
- S/N Ratio(Band Pass 20 〜 20,000 Hz) Tone defeat switch on
- Master volume min : 90 dB
- Master volume max : 77 dB
- Power amplifier only : 105 dB
- Tone ControlsBass : ±10 dB at 100 Hz, Treble : ±10 dB at 10 kHz
- Controls
- 8 Input gain control 1 Master gain control 1 Bass control
- 1 Treble control 1 Power ON/OFF switch 1 Tone defeat switch
- 1 Low-Cut switch (60 Hz, 6 dB/octave)
- Indicators1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED
- ProtectionSelf-protection, with AC fuse (inside)
- Connectors
- Input No.1 to No.8 : Card-edge connector
- Bridging, Mixer preamp. output, Power amp. input, Aux output : RCA phono jack
- Output : Screw-terminal strip
- Mute, Remote VR : Screw-terminal strip
- AC outlet : 3-pin grounding type
- AC power cord/plug : SJT, 3-prong type
- Temperature Range-10℃ 〜 +60℃ (12゜F 〜 140゜F)
- Dimensions (WxHxD)16.54" x 3.9" x 12.52"
- Weight17.2 pounds (7.8 kg)
