True Bypass vs Buffered Bypass Pedals: What Every Guitarist Needs to Know
Written by the LiferLine team with the help of AI research
The Two Ways a Pedal Can Be Off
When you engage a pedal, your signal passes through its circuit. When you turn it off, the pedal has to get your signal from the input jack to the output jack without the circuit getting in the way. There are two fundamentally different ways to pull that off: true bypass and buffered bypass. The difference between them affects your tone, your noise floor, and how your rig behaves across long cable runs.
In our opinion, neither approach is universally better. Both carry genuine advantages and genuine drawbacks, and the best answer for your rig depends on how many pedals you're running, how long your cable runs are, and what other signal-management tools you already have in place. Understanding the underlying mechanics makes it a lot easier to make an informed choice instead of just following the conventional wisdom that one option beats the other outright.
How True Bypass Works
In a true bypass pedal, switching the effect off closes a mechanical switch that connects the input jack directly to the output jack, bypassing the pedal's circuit entirely. No part of the pedal's electronics ever touches your signal. In theory, a true bypass pedal sitting in the off position is electrically identical to a cable connecting the jack before it to the jack after it.
We find this genuinely appealing. It means the pedal can't color your tone when it's off, can't add noise from its own circuit, and can't introduce impedance loading from its own components. For players who switch relatively few pedals and run modest cable lengths, true bypass is an elegant, simple solution. The mechanical switch itself has a satisfying physical feel, and in a well-made pedal it lasts for years.
How Buffered Bypass Works
A buffered bypass pedal, when you switch it off, routes your signal through a buffer circuit before passing it along to the output. A buffer amplifier is a unity-gain amplifier that copies a signal from one circuit to another while transforming its electrical impedance; it doesn't amplify or attenuate the signal's level, but it changes how the signal interacts with the load presented by whatever cables and circuits come next. (Source: Wikipedia) A buffer's output impedance runs very low, which means the signal it delivers holds up much better over long cable runs.
As far as what actually matters here, a buffer's key property is its ability to decouple the impedance of your guitar's pickup from the impedance of the cables and components that follow it. Your guitar's pickup is a high-impedance source; it produces signal efficiently but stays sensitive to loading. A buffer converts that high-impedance signal into a low-impedance equivalent that can drive long cables without meaningful loss.
The Problem with Many True Bypass Pedals in Series
Interestingly, the problem with true bypass runs counterintuitive: every true bypass pedal you switch off adds its cable to the total length of cable your guitar's pickup has to drive. A guitar pickup is a high-impedance source, and high-impedance signals interacting with cable capacitance cause high-frequency roll-off; the longer the cable, the more treble and clarity you lose. Chain together many true bypass pedals, each sitting in the off position, and the cumulative cable load can add up fast.
Some players call this the 'true bypass myth,' the idea that maximum true bypass always equals maximum tone fidelity. In practice, a rig with ten true bypass pedals and three meters of cable between each one can sound noticeably duller and thinner than the same guitar plugged directly into the same amp with a single cable. Unfortunately, the transparency that true bypass promises in isolation can disappear once you're dealing with a large, real-world rig.
The Case for Buffers in Your Signal Chain
A single well-designed buffer placed early in the signal chain solves the cable-loading problem for every pedal that follows it. By converting the guitar's high-impedance signal into a low-impedance signal right at the start of the chain, the buffer lets the signal travel long cable runs and pass through many true bypass pedals without significant high-frequency loss. Fortunately, one good buffer generally does the job; you rarely need multiple buffers in series.
Mogami builds its cables around the philosophy that a cable should stay 100% transparent and change the sound in no way, and the company recommends using the shortest cable that fits your needs. (Source: Mogami) A buffer works on that same principle; it doesn't add anything, it just keeps the signal from degrading as it travels. Some players run a dedicated buffer pedal; others pull a buffer from a buffered bypass pedal such as a Boss or certain boutique tuner pedals, which players commonly place first in the chain.
Best Practices for Your Rig
As far as practical recommendations go, we tell most players to place a buffer (or a buffered bypass pedal) near the start of your signal chain, then use true bypass pedals for the rest without worrying about it. If your rig is small, four or five pedals with modest cable runs, pure true bypass throughout may work perfectly well and you may never notice a difference. If your rig is large, or you run a long cable from your board to your amp, a buffer is worth adding.
Fuzz pedals are a special case worth calling out. Many vintage-style fuzz circuits interact directly with the impedance of a guitar's pickup, and placing a buffer before a fuzz can alter its character significantly. If your rig includes a fuzz, we'd place it first, before any buffer, and let it see the raw guitar signal. This is one of the situations where understanding the theory helps you make a specific, informed exception to the general rule rather than following it blindly.
What This Means for Your Cables
The bypass type of your pedals and the quality of your cables tie together closely. Cable capacitance is the specific electrical property that causes high-frequency roll-off in unloaded high-impedance signal runs; a lower-capacitance cable causes less roll-off per foot than a higher-capacitance one does. Shorter cables between pedals, lower-capacitance cable construction, and a buffer near the start of the chain all work together toward the same goal: getting your signal from your guitar to your amp as intact as possible.
This is exactly why we build our patch cables as short as practical; we've found it's consistently worth the investment. True bypass or buffered, your signal still has to travel through physical cable either way, and cable quality affects what actually arrives at each pedal's input. A buffer can compensate for cable length; it can't compensate for a cable with a broken internal connection or corroded connectors causing intermittent signal loss. Simply put, a good buffer and a good cable solve two different problems, and you need both.
Built for This
We build Forever Cables patch cables with premium Mogami wire and Neutrik connectors for minimal capacitance and maximum signal integrity. True bypass, buffered, or hybrid, start with cables that will never let you down.
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References
- Wikipedia: Buffer amplifier, Definition of a buffer amplifier as a unity-gain amplifier that transforms electrical impedance; infinite input impedance and zero output impedance as ideal characteristics.
- Mogami: Mogami Cable FAQ, Cable transparency philosophy: a cable should be 100% transparent and not change the sound; recommendation to use the shortest cable that fits your needs.