Apologies, this has probably been answered many times but the more I read the less clear things become. I have a DAC which has the following specs: Output Signal Level: XLR 3.0 Vrms @ 0dBFS each pin Output Impedance: 75 ohm Now I have read that it is recommended that you have a 10:1 ratio (minimum) between the Preamp and Amplifier, or possibly 20:1 is better? So I want to connect this DAC's balanced outputs to an amplifiers balanced inputs. The amplifier has the following specs: Input Sensitivity: -10dBu Input Impedance: 10k ohm Sadly I have not yet grasped the formulas involved, but it looks to be like the ratio that this DAC and amp will have is something closer to 133:1 Is this a good or bad thing? Alternatively, Could I just assume that the DAC would be fine to plug into any amplifier (or preamp) that has an input impedance of 750ohms - 1500 ohms (10:1, 20:1 respectively) I think my brain needs a reboot and a new hamster...it used to work better I think? Thanks for the assistance.