Stereo Summing Amplifier The SSA 2B is the sound solution to the bottleneck problems arising when down-mixing digital recordings on DAW's. The 10- greater than 2 channel down-mixing unit directly targets the critical mastering process: Sonically it easily outperforms the quality of digital audio workstations and even betters the performance of mixing amplifiers built into the most high-end analogue consoles. - The TUBE-TECH SSA 2B Stereo Summing Amplifier features two very low noise / low distortion summing amplifiers with a very wide frequency response. - The inputs are transformer balanced and the circuits are symmetrical from input to output. The inputs are capable of handling extremely high input levels. - The Outputs are balanced and have fully floating transformers with a static screen. The power supply and the sidechain circuits are based on a solid-state circuit. - With the exception of the output stage all DC voltages are stabilised. 10 stereo input - 1 stereo output , or 4 mono, 8 stereo input - 1 stereo outp