I am looking to buy a preamp to control volume of my Shiit Ygddrasil dac. Currently, i control volume through iFi zen streamer. It is based on Volumio and it is not totally bad. Nevertheless, it is not the best place to control volume. I tried some cheap passive volume control from Amazon. They went bad really quick creating hum. May be the 4V out of the DAC is too hot to handle..not sure. Looking for good options available in the market here. Thought of getting Shiit Freya. Realized shiit it is not available in India. Any alternative recommendation is greatly appreciated.