Introduction

Lyngdorf SDAI 2175 is a compact, high-performance analog integrated switch-mode amplifier utilizing some of the circuit topologies originally developed for the Lyngdorf Millennium and M2150 amplifiers. Due to the switch-mode topology, with an efficiency of up to 85%, the SDAI 2175 will provide its output power with minimal heat dissipation. A massive power supply with a 650VA toroid transformer and more than 40000uF capacitors ensures that the SDAI 2175 can deliver the current to drive even the most demanding loudspeakers.

The SDAI 2175 has 2 gold-plated XLR connectors accepting balanced input signals and 6 stereo inputs with 2 gold-plated RCA connectors for unbalanced signals. The SDAI 2175 has a stereo tape out of the selected line level input signal and pre out of the selected input signal after the volume control as either balanced signal from the gold-plated XLR connectors or unbalanced from the gold-plated RCA connectors.

The volume control is implemented as a high precision digital controlled analog attenuation in 0.1 dB steps over a 100 dB range. Input selection is performed via precision relays with double gold plated construction of the contact set. These kind of relays are normally only used in expensive measurement equipment for high linearity and low losses.

All controls can be operated from the front panel via the logical user interface or by use of the remote control. Or as an option the setup can be performed via a PC interface and the Lyngdorf SDAI2175 can be controlled from other Lyngdorf products capable of broadcasting control codes.

The input signal is fed to the volume control circuit via an AC coupled true instrumentation type input amplifier. Except for this AC coupling, the SDAI 2175 is fully DC coupled with no bypass capacitors or DC servos to degrade the performance. The protection circuitry in the SDAI 2175 shuts down the unit in case of over-temperature, DC voltage on the outputs and too high output current. The amplifier will resume normal operation when the fault condition is no longer present.

A trigger output on a 3.5mm jack connector allows the SDAI 2175 to control one or more SDA2175’s power condition.

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SDAI 2175 specifications

Lyngdorf Audio SDAI 2175 is a remarkable integrated amplifier that combines cutting-edge technology with impeccable audio performance, catering to both high-fidelity enthusiasts and casual listeners alike. This sophisticated device, designed in Denmark, reflects the brand's commitment to excellence in audio reproduction, making it a standout choice in today’s competitive market.

One of the main features of the SDAI 2175 is its powerful amplification capability. Delivering 2 x 175 watts at 4 ohms, the amplifier is well-equipped to drive a wide range of speakers, ensuring that users can enjoy rich, dynamic sound across varying volume levels. This level of power allows for clear reproduction of music, creating an engaging listening experience whether for subtle classical pieces or high-energy rock tracks.

The SDAI 2175 is equipped with Lyngdorf’s proprietary RoomPerfect technology, a significant innovation that automatically optimizes the sound performance based on the unique acoustics of the listening environment. This advanced speaker and room correction system effectively resolves frequency response issues, providing a more uniform sound across all listening positions. The result is a more immersive experience, allowing listeners to enjoy music as if they were in a live concert setting.

Another prominent characteristic is its versatility in connectivity. The SDAI 2175 includes a range of digital and analog inputs, including multiple HDMI, optical, and coaxial options, enabling seamless integration with various audio and video sources. This flexibility ensures that users can connect their TVs, streaming devices, and other equipment effortlessly while maintaining high-quality audio performance.

Additionally, Lyngdorf Audio emphasizes user-friendliness with an intuitive interface and remote control, making it simple for users to navigate settings and preferences. The design of the amplifier is sleek and modern, featuring a minimalistic aesthetic that can fit effortlessly into any home décor.

In summary, the Lyngdorf Audio SDAI 2175 is a high-performance integrated amplifier that brings together power, advanced technologies, and a user-friendly design. With features like RoomPerfect technology and extensive connectivity options, it delivers superior audio quality that meets the demands of both audiophiles and casual listeners. This amplifier not only elevates the listening experience but does so with elegance and sophistication, solidifying its place as a top choice for audio enthusiasts.