AuraSonics 4SUM – summing mixer

AuraSonics is introducing a four-channel summing mixer for stereo line-level signals.

Photo: official website okno-audio

The device sums four stereo or eight mono audio signals from different sources, including synthesizers, players and audio interfaces. The new model has a compact metal enclosure and can increase the number of devices connected simultaneously to audio interface inputs or an amplifier.

Photo: official website okno-audio

Each mixer channel has a level control and a mono switch. All inputs and outputs are balanced, using 6.3 mm jack connectors. The product uses OPA1678 FET operational amplifiers with very low THD of 0.0001%. Multiple 4SUM units can be connected in series to increase the input count.

AuraSonics 4SUM specifications

• Maximum output gain: +10 dB;
• Maximum input level: +22 dBu;
• Frequency range: 20 Hz – 20 kHz;
• Signal-to-noise ratio: >86 dB;
• THD: 0.0001%;
• Dimensions: 10.5 × 11.8 × 5 cm;
• Weight: 0.55 kg.

Photo: official website okno-audio

More information and ordering are available on the official website Okno-Audio.