P/N. 10721140



4 channel amplifier, Class D
4 independent inputs
400 W per channel @ 4 ohms
Low Z and High Z (Bridged 70 V/100 V) operation
Hybrid configuration operation (Hi Z and Low Z)
Universal Power Supply
12dB/oct 80Hz HPF filter Selector (on/off)
Automatic Stand-by mode


Retail Stores
Bars, clubs and restaurants
Fitness Centers, hotels, schools

INTEGRAL-A1604 is a quad channel, 2U, high efficiency class D amplifier intended for permanent installation use. It is equipped with switching universal mains power supply and auto-standby functionality when no signal presence is detected providing energy savings.

The amplifier delivers 4x400W at 4ohm and can be used in bridge mode for high impedance 100V/70V lines (providing 2x800W of total power). Front LEDs provide information about signal presence, limiters and protection status. At the rear panel the user can configure the stereo / bridge mode and engage an 80Hz 12dB/oct order High Pass filter.

The sober and elegant design together with the euro-block type connectors and energy savings makes it perfect for permanent installations.
Output Power Ratings
Power 8 Ohms, Both Channels Driven4 x 200 W
Power 8 Ohms Bridged2 x 800 W
Power 4 Ohms, Both Channels Driven4 x 400 W
Power 100 V2 x 800 W
Power 70 V2 x 800 W
Electronics and Connectors
Amplifier Channels4
Output CircuitryClass D
Frequency Response20 Hz-30 kHz (+0 – 0.5 dB)
Sensitivity1.38 V (+5 dBu)
Voltage gain32.5 dB
Damping Factor>350, each channel (8 Ω load, 1 kHz and below)
ControlsPower On/Off, Gain Pots
Amplifier ProtectionsShort Circuit, DC Output, Temperature, Over/Under Voltage
LED IndicatorsOn-Protect-Standby, Signal-Clip
Audio Signal Input ConnectorTerminal Block
Speaker Output ConnectorTerminal Block
Current Draw 230 V / 115 V3.0 A / 6.0 A
Dimensions ( H x W x D )88 x 483 x 208 mm
3,5 x 19,0 x 8,2 in
Net Weight3,8 kg ( 8,2 lb )
Carton Dimensions ( H x W x D )170 x 525 x 315 mm
6,7 x 20,7 x 12,4 in
Shipping Weight4,5 kg ( 9,9 lb )
Title Format Size
Data Sheet
HT_INTEGRALA1604_00.pdf PDF 317 Kb
User Manual
UM_INT_A_EN.pdf PDF 601 Kb
FactoryPresets_1.0.lib LIB 122 Kb
ALMA_Setup_1.3.4.exe EXE 127.16 Mb
ALMA-1.3.4.dmg DMG 165.14 Mb ZIP 48.28 Mb
Line Drawing
CAD_2D_IG-A1604.dwg DWG 1.13 Mb
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