A Redeemer buffer circuit inside your guitar is the best way to go, but maybe you have a large pedal board and some pedals need to be re-buffered to drive the cable capacitance on towards the amplifier.
Redeemer Inline - Buffer for Guitar & Bass
$109.0
Input Impedance
Adjustable (10K to 10M)
Boost Options
Adjustable (Unity to 12dBu)
Brand
Creation Audio Labs
Type
Guitar & Bass Buffer, Guitar Buffer
Analog/Digital
Analog
Country/Region of Manufacture
United States
condition
New