The Ashdown Dual Band Compressor is a must have tool for any modern bass player's rig. Dual Band Compression While standard compression can sound great, Dual Band Compression takes control to a whole new level. Splitting the signal into high and low frequency bands lets us apply compression independently to each – fast attack and decay for the high frequency and slow attack and decay for the deep bass. This approach let's you fine tune a powerful, punchy sound to your exact requirements – increasing sustain, smoothing out dynamics, adding definition or even boosting volume. Setting the level Whether you're using an active or passive bass, the Ashdown VU meter in combination with the Input level knob let's you easily find the sweet spot, ensuring you get the best possible tone in and out whatever instrument you're using.