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No, the SDA-2400 is designed as a pure stereo power amplifier. If more than 2 x 400W output power is required and your loudspeakers is suitable, you may consider bi-amping together with a TDAI amplifier.

The SDA-2400 has one stereo pair of speaker outputs, so the power amplifier itself is not designed for bi-amping or bi-wiring. But bi-amping and bi-wiring can be done together with a Lyngdorf TDAI amplifier by using its digital or analog pre-out, with the option of setting highpass and lowpass filters in the TDAI menu. You’ll find more information in this manual.

The SDA-2400 is a Class-D power amplifier with both analog and digital inputs. The Input Select switch on the back selects between the two inputs – they cannot be used simultaneously. If your pre-amp has a digital output, the SDA-2400’s digital input should be used to keep a digital music signal in the digital domain as long as possible. A digital connection is also less affected by external interference.

All TDAI amplifiers have a pre-out to be connected to the SDA-2400. With the TDAI-3400 and TDAI-2170 the preferred connection is via the digital input to keep a digital music signal in the digital domain as long as possible. The SDA-2400 can either be used as the only power amp by disabling the TDAI amplifier’s own speaker outputs, or in a bi-amping configuration with the option of setting highpass and lowpass filters for each amplifier. In bi-amping configuration, the signal processing delay of an external SDA amplifier can be compensated in the TDAI menu. You’ll find further information in the owner’s manuals.

Yes, both is possible. The Power State switch on the back selects between energy-saving Low Power when a music signal controls power-on from standby / power-off into standby, or On if the amp should either stay permanently on or is controlled by a 12V trigger signal.

No, the SDA-2400 is an extremely power-efficient, energy-saving, and cool-running Class-D amplifier, while the aluminum case and PCB design derives heat. When several SDA-2400 are stacked, or other heat-generating electronics are placed above or below, or the unit is placed inside a closed cabinet, enough space around the SDA-2400 must still be ensured.