The issue is more the other way around, if a component is really balanced (many are not they just have balanced connectors) then if you connect to an SE output, the component has to combine the two half’s of the balanced output.
There are fundamentally 3 ways this is done.
- Ignore half the signal - impacts the noise floor, can be a significant negative in some amps like the Liquid Platinum, but it’s often the least impactful in terms of changes to the sound.
- Provide a summing circuit on the output, this is generally done on higher end gear, with varying levels of success.
- Use an output transformer, this is more commonly done on EXPENSIVE amps, transformers are generally not transparent.
The short version is if you have a piece of balanced gear it’s generally better to run it balanced through to the headphones, if you don’t or can’t, don’t worry about it.
Schiit Gungnir/Yggrasil are generally considered to be better on Balanced out
Liquid Platinum is a significant improvement if you can run a balanced headphone out, running balanced in is less important.