Works manually or by remote from the Young MK3 MQA DSD256DAC/preamp. Please visit: m2tech.biz. Click on products. Click on Rockstar series. Click on Van der Graaf MK2. This is a new ultra low noise power supply for 9v/15v M2Tech products and allows for remote control. Power supply can be sequentially programed for up to 4 devices for on/off function. Example: Pre-amp on, amp on, - amp off, preamp off, etc.