Crumar DoubleBack is more than just a digital delay effect; it's a perfect addition to any guitarist's pedalboard, as well as to the modern synth player's setup.

lt can sound cold and precise like a classic digital delay, but it can also add the warmth and movement typical of an analog delay effect, whether tape or BBD. The dual filter (low-pass + high-pass) lets you choose the best "color" with a single knob; a single knob also adjusts the modulation, which can be gentle and subtle or crazy and chaotic.

The presence of a spring reverb simulator, applied to both the input sound and the delay tail, adds depth and spatiality. 

The "DUCKING" mode comes in handy when you want to give space to the dry sound without sacrificing a present and incisive delay tail. The "SPARKLE" and "REVERSE" effects come into play when what you need is not just a delay but a creative tool that reconstructs sounds in a lively and unpredictable way. 

Last but not least, the completely analog path of the dry signal from input to output helps preserve the original sound without passing through the digital domain.