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Efficient Power for Your 2.1 Setup!
The Omnitronic A-3603 is a modern 3-channel power amplifier that delivers impressive output power in a compact package. With up to 3600 Watts at 4 Ohm, it effortlessly powers large setups consisting of two tops and a subwoofer. The built-in crossover provides precise separation between channels, while the Class-D technology and switching power supply ensure high efficiency and low weight.
Powerful and Flexible
The amplifier delivers 1x 2000 Watts for the subwoofer and 2x 800 Watts for the satellite speakers — ideal for installations in clubs, dance schools, restaurants, gyms, or for mobile use. With the variable crossover frequency from 50 to 250 Hz you can tailor the crossover perfectly to your system. The bypass function also allows operation with external DSP management.
Professional Connections and Control
Thanks to electronically balanced XLR inputs and practical XLR links, you can integrate the amplifier effortlessly into existing setups. Locking speaker connectors provide a secure connection to your speakers. Each channel features its own LED VU meter as well as LEDs for Protect and Clip states — for reliable monitoring in live or installed environments.
Thoughtful Design for Everyday Use
The sturdy steel chassis with aluminum front is built for daily use and fits comfortably into 19" racks with 2U height. At just 9.10 kg, the A-3603 is easy to transport while remaining sturdy enough for demanding environments. High operational reliability, low THD, and a high damping factor ensure clean and controlled audio output.
Features
- 3-Channel PA Amplifier: Class D
- Output Power (4 Ohm): 2x 800 Watt, 1x 2000 Watt
- Output Power (8 Ohm): 2x 400 Watt, 1x 1000 Watt
- Crossover Frequency: 50 - 250 Hz variable
- Frequency Range: 20 - 20,000 Hz
- Signal-to-Noise Ratio: >100 dB
- THD: <0.003 % at 1 kHz
- Input Impedance: 20 kOhm balanced, 10 kOhm unbalanced
- Gain: CH1 26 dB, CH2 26 dB, CH3 32 dB
- Slew Rate: >10 V/µs
- Damping Factor: >500
- Controls: Power switch, Volume controls, Mode switch, Crossover Frequency
- Status: Protect, Clip, Level Meter, Bridged
- Inputs: 3x XLR (Line)
- Link Outputs: 3x XLR
- Speaker Outputs: 3x Speaker
- Power Supply: 100-240 V AC 50/60 Hz
- Total Power Consumption: 685 Watt (1/8 Power)
- Power Connection: blue P-Con, incl. cable
- Chassis: 19" Rackmount, 2U
- Dimensions (W x D x H): 48.3 x 41 x 8.9 cm
- Weight: 9.10 kg
Scope of delivery
- 1 x Omnitronic A-3603 Class-D 2.1 Power Amplifier
- 1 x Power Cable
Specification
- Product number 00117311
- Number of channels 3
- Colour Silver
- Height in U 2 U
- Power (Watts) 3600
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Financing
easyCredit Ratenkauf
- 2 to 60 months term
- Financing from 20,60 € / month
- More information about installment purchase
ConsorsFinanz Finanzierung
- 6 to 72 months term
- 0% financing for 58,25 € per month
- More information on financing
| Operating instructions / manual |
| 3 Year warranty | |
| 30 Day Money Back | |
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The hotline is currently not manned. You can reach us again on Wednesday, 20.05.2026 at 09:30.
| Wednesday | 09:30 - 18:00 | |
| Thursday | 09:30 - 18:00 | |
| Friday | 09:30 - 18:00 | |
| Saturday | 09:30 - 13:30 | |
| Monday | Closed |
Different opening times |
| Tuesday | 09:30 - 18:00 |