IA 402D
IA 402D



Noticeable quiet | Efficient | Effortless

I-Line offers two 2-channel class-D power amplifiers with switching mode power supply.

IA 402D provides 2x 200 Watts at 8 Ohms or 2x 400 Watts at 4 Ohms.

The amplifier is equipped with a digital encoder with push button for DSP preset selection, delay settings, EQ adjustments and more.

Sensor-controlled fan and optimized front-to-back air flow, together with very low idle power consumption, ensure low noise levels for quiet environments at all times.

A combination of XLR, speakON®- and Phoenix-connectors for in- and output ensures maximum flexibility during the installation process.


IA 202D & 402D power amplifier are equipped with 3 most widely used analog input and output connections in professional audio. 2 channel XLR inputs with link outputs together with Phoenix MSTB 3-pin inputs will cover most of the input needs. Outputs are equipped with 3x Neutrik speak ON® connectors in parallel with 4-pin Phoenix MSTB connectors for maximum flexibility.


24bit/48kHz DSP processor provides all I-line speakers with correct and precise filter, EQ and limiter settings. As always - good sounding and well protected speaker systems are the ultimate aim of the SE AUDIOTECHNIK engineering team. Built-in speaker presets, EQ control, delay and other features allow for an easy, cost-effective and quick system setup and tuning.


Type:Class-D, SMPS
Power Output:2 x 250W @ 8 Ω
, 2 x 125W @ 16 Ω
Minimum Load Impedance:8 Ω
Input Impedance:20 kΩ balanced, 10 kΩ unbalanced
SNR (At rated power):95 dB
Crosstalk:64 dB
DSP:48 kHz, 24-bit DSP processor, processing latency: 1.1 ms
Signal Processing:Speaker presets, Delay, High Shelf, High-Pass, Parametric Equalizer, Limiter, Phase Invert, Mute, Input Gain
Controls:Digital encoder with push button
Maximum Input Level:+20 dBu
Signal Connectors:XLR 3-pin male line-level inputs/link outputs, 
Phoenix Contact MSTB 3-pin inpults/link outputs
Speaker Connectors:Neutrik Speakon® NL4 outputs, Phoenix Contact MSTB 4-pin outputs
Protection:short-circuit, over-heating, over-current
Cooling:Sensor controlled fan, front-to-back air flow
Power Efficiency:76.00%
Power Consumption (Idle, Full Power):29 W / 600 W
Power Requirements:100 - 240 VAC
Dimensions (W x H x D):483 x 66 x 256 mm / 1.5 HU
Weight:4.7 kg (netto)