Item # A-903MK2 UL
8-INPUT MODULAR MIXER AMPLIFIER, 30W, EIGHT MODULE PORTS, 2RU


Item # A-903MK2 UL
8-INPUT MODULAR MIXER AMPLIFIER, 30W, EIGHT MODULE PORTS, 2RU
- UM: EA
- Estimated Weight: 23.0
- Brand: TOA ELECTRONICS
The TOA A-903MK2 UL is a versatile 8-channel mixer amplifier, delivering high-quality audio performance for commercial and professional sound applications. Designed for paging, background music, and public address systems, this unit provides 30W of output power with modular input configurations, allowing seamless integration with microphones, line-level devices, and auxiliary sources. The A-903MK2 UL features bass and treble controls, ensuring clear and balanced sound, while its compact, rack-mountable design makes installation effortless. Built for offices, conference rooms, schools, and retail spaces, this TOA mixer amplifier offers reliable operation and flexible expansion options.
The TOA
900 Series are widely recognized as the industry standard in installed sound
system amplification. When reliability and performance are critical - such as
in paging and music distribution for airport, hospital, and industrial sound
systems - you can count on the TOA 900 Series to perform consistently, day-in
and day-out.
Type |
8-channel mixer power amplifier |
Power Requirement |
AC mains, 120 V, 60 Hz |
Power Consumption |
60 W |
Output Power |
30 W 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.H.D |
0.02% at 1 kHz, rated output |
Inputs |
Eight
Input Ports : Each port accepts any input modules. |
Input Sensitivity /Impedance |
Input Port #1 to #8 : 100 mV/10 kO |
Preamp OUT /Power Amp IN |
1000 mV into 600 O/1000 mV, 10 kO |
Outputs(T)=Transformer (D)=Direct |
Main (T) : 4 O, 25 and 70 volts, balanced,
Main (D) : 8 O, unbalanced |
Output Regulation(1kHz) |
(D)
Less than 0.5 dB, no load to full load |
S/N Ratio(Band Pass 20 ~ 20,000 Hz) Tone defeat switch on |
Master volume min : 90 dB |
Tone Controls |
Bass : ±10 dB at 100 Hz, Treble : ±10 dB at 10 kHz |
Controls |
1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED |
Indicators |
1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED |
Protection |
Self-protection, with AC fuse (inside) |
Connectors |
Input
No.1 to No.8 : Card-edge connector |
Temperature Range |
-10°C ~ +60°C(12°F ~ 140°F) |
Finish |
Black |
Dimensions(W×H×D) |
420(16.54") × 99.1(3.90") × 318(12.52") mm |
Weight |
7.8 kg (17.20 lb.) |
Accessories |
Volume control cover (YA-920)……4 |
Option |
Rack mouting bracket (MB-25B) |
Documents