the t.racks DSP 4x4 Amp100V B-Stock

B-Stock with Full Warranty
Return that may have slight traces of use.

4 Channel DSP Installation Power Amplifier

Power: 4x 40 W at 89 V, 4x 50 W at 100 V
Frequency range: 20 - 20,000 Hz
Class D power amplifier
Programming via USB (Windows)
Power switch on the front
3 buttons on the front for preset switching
3 rear contact inputs via screw terminal for preset switching
Inputs: 4 x XLR balanced
Outputs: 4 x Speaker Twist, 4 x 6.35 mm jack TRS Pre-Out
Dimensions (H x W x D): 482 x 339 x 44 mm
Type: 19" 1 U
Weight: 8.1 kg

Note: Not compatible with Mac

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since September 2023
Item number 581571
Sales Unit 1 piece(s)
EQ Yes
Delay Yes
Limiter Yes
Number of inputs 4
Number of outputs 4
Computer Remote Yes
RTA Connector No
Number of Rack Units 1
Channels 4
2-Way Stereo Yes
Output power at 100 V 50 W
Digital Yes
Output power at 4 Ohms / Cannel 0 W
Rack Units 1 U
Class Class D
Input XLR Yes
Link Out No
Output Phönix clamps Yes
DSP / Crossover Yes
Convection cooling Yes
Width 482 mm
Depth 339 mm
Height 44 mm
Weight 8,1 kg

Also available as brand new product €359

€333

All prices incl. VAT

Sales Rank

in Speaker Management Systems

Information on the disposal of old devices

Affordable fixed-install power amp

The t.racks DSP 4x4 Amp 100V is a four-channel ELA power amplifier with 100V technology, delivering up to 4×50 watts of output power in a 19" rack-mount housing that operates silently without a fan. Audio sources connect through four XLR inputs, while the outputs provide four screw-terminal power amplifier connections and four TRS pre-outs, ensuring flexibility in installation and signal routing. An integrated DSP expands its capabilities with a routing matrix, compressor/limiter, gate, EQ or crossover, and delay, all easily managed via USB and the Windows-compatible software. As studio pros have come to expect from the t.racks, the DSP 4x4 Amp 100V combines versatile functionality, quiet operation and excellent value for money, making it an efficient and reliable choice for a wide range of professional sound applications.

the t.racks DSP 4x4 Amp100V power amplifier potentiometers

Pro tech for pocket change

Thanks to its 100V technology, the four-channel DSP 4x4 Amp 100V power amplifier is ideally suited to ELA systems and permanent installations, with screw-terminal outputs that simplify secure and reliable connections, while balanced pre-amp outputs on TRS jacks provide additional flexibility. Playback devices connect via four XLR inputs, and the amplifier delivers a maximum output of 4×50 watts at 100 volts. Its built-in DSP offers a compressor/limiter, gate, EQ that can also function as a crossover, and delay for runtime compensation, all configurable individually for each channel, along with a matrix for input/output assignment. Operation is handled via USB and the Windows-compatible software, with convenient level adjustments available directly on the front panel.

the t.racks DSP 4x4 Amp100V buttons on the front panel

Switch at will

As a DSP-controlled four-channel power amplifier, the t.racks DSP 4x4 Amp 100V offers an exceptionally practical feature that enhances everyday usability: Presets 1, 2 and 3 can be loaded directly from the front panel at the push of a button, eliminating the need for an external computer, and can also be switched easily via the screw terminal on the rear panel. This enables a range of convenient applications, from common PA setups such as toggling between tops with or without subwoofers, to activating or deactivating adjoining rooms in fixed installations. The same function can just as effectively be used to adjust levels flexibly and independently, ensuring smooth adaptation to the specific requirements of each situation.

About the t.racks

The in-house brand the t.racks has been an integral part of the Thomann music store range since 1997. A wide range of different rack devices, effects, power distributors, and accessories appear under the t.racks name and prove that quality, reliability, and attractive pricing do not have to be mutually exclusive. Whether for home studios, the stage, or the rehearsal room – the t.racks offers a convincing and affordable solution for every situation.

Efficient sound system for permanent installations

In combination with 100V speakers, the t.racks DSP 4x4 Amp 100V four-channel power amplifier is ideally suited for permanently installed sound systems with up to four speaker circuits, offering a flexible and efficient solution for audio distribution. Mixing consoles or playback devices connect easily via the XLR-equipped analogue inputs, while each output delivers 50W of power at 100V. The internal DSP section can also be used unamplified through balanced jack outputs to feed additional 100V amplifiers, extending the system as needed. With a comprehensive range of DSP functions, the amplifier allows precise adjustment and optimisation for every installation, and its compact 1U 19" housing fits neatly into standard racks, saving valuable space. The fanless design ensures completely silent operation, making it perfectly suited for environments where noise must be kept to a minimum.

the t.racks DSP 4x4 Amp100V 19" rack power amplifier

In the spotlight: 100V technology

Electroacoustic systems in larger rooms or buildings are typically realised using 100V technology, in which both amplifiers and speakers are equipped with transformers. The amplifier's output voltage is stepped up to 100V at maximum power and then reduced again by each connected speaker, allowing multiple speakers – often of different types and power ratings – to operate in parallel from a single amplifier output. This approach not only enables highly flexible system configurations but also ensures minimal line losses, allowing for simple, cost-effective cabling even over long distances, making it an ideal solution for extensive and widely distributed sound installations.

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