Technical data
Connections	Screw terminals up to 2.5 mm²
Input level	0dB, -6dB, -12dB, -16dB
Operating voltage	24 V DC
Protection circuit	Thermal, short-circuit, reverse polarity
Output power at 24V	2x 20 W at 4 Ohm / 2x 10 W at 8 Ohm
Audio inputs	asymmetric
Power consumption (24 V DC / max)	45mA / 2A
Output impedance	4 Ohm
Frequency response	40 – 30.000 Hz (-3dB)
Rotary switch 4 gain stages	20dB, 26dB, 32dB, 36dB
Input impedance	60kOhm, 30kOhm, 15kOhm, 10kOhm
Dimensions (W x H x D)	89,7 x 62,2 x 17,8 mm; 1 TE

The DVM-210 A from RCS Audio-Systems is a digital stereo amplifier module in Class-D technology, designed for use in professional sound systems. It provides an output power of 2x 20 W at a load impedance of 4 Ohm and is designed for mounting on a DIN rail structure. The compact design with a width of 1 TE (module unit) allows for flexible placement, even in sub-divisions of enclosures. The module is designed for an operating voltage of 24 V DC and is suitable for applications requiring reliable and energy-efficient amplification of audio signals.

Applications
This amplifier module is designed for use in professional audio systems, particularly in systems requiring compact, powerful, and maintenance-free amplification. Typical application scenarios include integration into in-wall mixers, enclosures, or other devices where space and heat generation are critical factors. The low heat generation due to digital circuit technology reduces environmental load and enables dense mounting in enclosed housings.

Functions and Equipment in Detail
A four-stage rotary switch behind the transparent front cover allows adjustment of gain to match the available audio input level. The four gain stages are 20dB, 26dB, 32dB, and 36dB, enabling flexible adaptation to different signal sources. Input levels can be set to 0dB, -6dB, -12dB, and -16dB, ensuring precise signal matching. The unbalanced audio inputs are designed for standard connections in audio technology. The multi-coloured LED indicates operational readiness — glowing green — and switches to a red, signal-synchronized blinking mode in case of overdrive, visually indicating signal overload.

Technology Explained Simply
The Class-D technology ensures high efficiency and minimizes heat generation, increasing operational safety. The output power of 2x 20 W at 4 Ohm impedance corresponds to a typical requirement profile for small to medium speaker systems. At a load impedance of 8 Ohm, the output power is 2x 10 W. The frequency response bandwidth of 40 Hz to 30,000 Hz (-3dB) covers the entire audible range and enables clear, detailed reproduction. Protection circuits against short circuit, reverse polarity, and thermal overload protect the module and connected components from damage.

Compatibility and Accessories
The module is designed for mounting on a DIN rail structure and can be combined with other devices from the manufacturer, such as the in-wall mixer UPM-121 A or the power supply PSU-048/24V. Connections are made via screw terminals, supporting cable cross-sections up to 2.5 mm². Power supply is via 24 V DC, with a maximum current draw of 2 A. Input impedances of 60kOhm, 30kOhm, 15kOhm, and 10kOhm allow adaptation to various signal sources.

Mounting and Installation
Mounting is done on a DIN rail structure, with the module width of 1 TE enabling compact placement in enclosures. Connections are made via screw terminals, ensuring a secure and reliable connection. Installation requires no special tools, and operation is performed via the rotary switch and LED indicator.

Advantages in Operation
The DVM-210 A is characterized by high operational reliability, low heat generation, and flexible adaptability to various input signals. The integrated protection functions increase reliability, and the compact design enables efficient use of available space. The visual indication of operational readiness and overdrive simplifies maintenance and diagnostics during operation.