The JHS Little Black Buffer is an absolutely necessity for anyone running big pedalboards and long cable runs. Buffers are one of the most overlooked pedals but one of the most important because they're not about doing wild and wacky things to your tone, they're about making sure you tone stays pure and true all the way from guitar to amp, which can be a long journey for many guitarists!
All that cable run and true bypass pedals eventually dull the tone, putting a buffer in the chain gives the signal a little extra push that makes sure it gets to the amp as sparkling and true as it left your guitar!
Here's what JHS Pedals say about the Little Black Buffer
This may be the greatest weapon you didn’t know you needed.
For those of us who are a little “pedal happy” there can be some downfall to our tone. When running a pedal board with more than one or two effects, something called “capacitance” happens. This natural problem happens due to the amount of cable or line that your signal has to travel through, not to mention bad switching systems in certain pedals. The result is a very audible amount of high-end loss, weak signal, flabby bass and uncharacteristic pickup behavior in guitars. Another problem is the assumption that all “true bypass” is good. This isn’t true and actually can be worse than imagined.
This is were the “Little Black Buffer” steps in providing the perfect input impedance to your rig and giving you the final result of clear, natural tone that sounds like you're plugged straight into your amp no matter how many pedals you use.
Plug your guitar straight into the input then out into your pedal chain. No need for a switch. It runs on any standard 9v supply. This measures 3.6"x1.5"x1"