ANALOGMAN BUFFER - TINY BOX - BLACK - WITH ORIGINAL BOX!!

What is a buffer? 

A buffer is an active electronic circuit that keeps your guitar signal strong and preserves the frequencies of your guitar sound. If you have a good patch cord that's not too long, and plug directly into your amp, that is the purest sound you can get, and you don't need a buffer. But if you have long patch cords or a bunch of effects pedals, or a pedal with a weak output, a buffer can help get your sound back to the pure tone you are looking for.

Why do you need a buffer? 

All patch cords or Guitar Cables have some capacitance to them, especially cheaper cables like cables with molded ends. This acts just like the capacitor on your guitar's tone knob when you turn it down some, and rolls off the high end. Really bad cords can suck away too much of your tone, even mids, and should probably be replaced though a good buffer might make them usable. Some pedals, like old wahs, big muffs, etc also suck a lot of your tone away as they keep the circuit connected to your signal even when they are OFF (not true bypass, or buffered bypass). Certain pedals have a weak output (impedance is too high) and even when they are ON, the signal will get loaded by cables or other pedals after them. Some examples are Dynacomp/Ross type compressors, some distortion pedals, etc. You can test and find these types of pedals by using long cords and turning a buffer on and off after them - the buffer should do nothing on most pedals, but some will sound much brighter, clearer, and louder with a buffer after them. Those pedals are helped with a buffer following them.

Where you don't want a buffer 

Some pedals like the vintage circuits of a Fuzz Face or Rangemaster won't work well with a buffer or buffered pedal before them. The buffer won't let them do their "clean up" magic and can make them sound brittle. Put buffers or buffered bypass pedals AFTER these.

Why is our buffer a good one? 

I like what a buffer does, but I don't like what it does to my tone. 

Most buffers on the market are the simplest opamp circuit possible-one opamp stage with unity gain, just a few resistors and capacitors are needed. These do the job of having a high input impedance and a low output impedance to drive your signal to the amp nice and strong. But many cheap buffers like that just don't sound and feel the same as the original best tone described above - a good cord direct into your amp. These buffers can send too much high end through, and sound brittle or HARD, not a nice feel. Many great sounding pedals like tube screamers, etc don't run your signal directly into the op-amp, instead they use a transistor input buffer. We use the same transistor as an old tube screamer on the input of our buffer, with the same input impedance of 510K. We also use the tube screamer's JRC4558D opamp later in the circuit for a warm but clean unity gain amplifier.

There is a great article on buffers on the DIY site AMZ muzique.com where Jack says, 
"An opamp is an even better buffer amplifier, though many believe they are somewhat colder sounding and more sterile than the transistor versions. The opamp gain is exactly unity and the output impedance is quite low; typically measured in tens of ohms instead of hundreds as with the transistors." 
We use both the transistor on the input and the op-amp on the output for the best of both worlds - nice silky tone and strong output. 

A customer wrote me a note: "I was reading on your website about buffers. So I started messing around with an Analogman Tube Screamer before my dirt and turning the delayed signal doen on my ARDX20 at the end of the chain (like your buffer at the beginning and end). Woah I got all my dynamics back. Other buffers have made my dirt too raspy and have nasty high end. Looking at other buffers output and input impedance, maybe they are putting too much high end through?"

Our original Analog Delay, the ARDL20, had buffered bypass and customers raved about how great the buffer was in that pedal. While on or off, it would keep your signal strong and sweet. We use the same buffer circuit in our ARDX20 dual analog delay but it has true bypass, so when OFF there is no buffer. But you can use an expression or volume pedal in the FX loop to kill the delays if you want just the buffer, or turn the level down.

This circuit is much more complex than a normal buffer but we feel it's worth it as it gives a more natural feel and balance, warm with a touch of compression and natural frequency response but without changing your tone. We want it to sound and feel just like a 10 foot high quality patch cord direct into your amp. A virtual cable!