It takes a little time to start up. After that, it works normally. The sound is superb. It's a so-called legendary machine. Multi-function digital delay, SDE-3000, with bypass function. - Model: SDE-3000 - Function: Digital Delay - Power Supply: AC Power - Connectors: INPUT, OUTPUT, MODULATION - Block Diagram: Block diagram describing the internal configuration - Bypass Function: Equipped with a BYPASS switch Thank you for viewing.