For the same price, you may want to look into a Tortuga Audio LDR based passive pre-amp, especially if you tend to listen a lot at lower output levels. The one you mentioned uses a very simple Alps Blue Velvet attenuator, which has been around for a very long time.
This might be the Passive Preamp im looking for
Hard to find passive preamps with the amount of inputs AND a Remote of that allows FULL control of all amp features. This Channel Islands seems to fit the bill.
Anyone own one?
https://ciaudio.com/product/plc%E2%80%A21-mkii-remote-passive-line-controller/
Anyone own one?
https://ciaudio.com/product/plc%E2%80%A21-mkii-remote-passive-line-controller/