All our products are supplied as dedicated 2-channel products, but with the SB boards you get analogue 5.1 and 7.1 line input and 5.1 and 7.1 line pre-out. This means that you can easily connect a DVD-player or SACD-player with 5.1 analogue out. If you have a system consisting of a pre-amp and 2-channel power-amp, the SA boards let you connect a B-340 (4-channel amplifier) and then have 6-channels (5+1) of high grade amplification.
The SB boards are available in 2 versions. The features are the same, only the sound quality differs. The SB-1 is the entry-level version, while SB-2 is the true high-end solution