Measure the performance of the FiiO K3ES and compare it with the sound of a low-cost smartphone. Check the performance of the balanced connection. Explain the points to consider when choosing a headphone amplifier.
**Reference purchase location**
FiiO K3ES
https://amzn.to/3DUER3A
If you would like to receive opinions and advice, please register as a member.
https://www.youtube.com/channel/UC0l4tjS60zEod6OCC97-9BA/join
#headphoneamp #smartphone