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  • Guitar Pedal Terms Explained: A-Z

    Guitar Pedal Terms Explained A-Z | Boost Guitar Pedals

    Ever wondered what NOS means? Or what the four-cable method is? Some guitar pedal terms can be confusing but below we explain some of the most common (and some not-so-common) words related to guitar pedals.

    Analogue

    Guitar Pedals were originally built with analogue circuitry - resistors, capacitors and transistors - before microchips became widely available. Today, analogue pedals are revered for their "organic" sounds and response to picking, although some may argue that the gap is narrowing.

    Read: Digital vs Analogue Guitar Pedals


    Artisan

    Artisan is defined as "made in a traditional way by someone who is skilled with their hands", which we believe sums up the builders we work with and the pedals they build.


    BBD

    BBD is an integrated circuit and the abbreviation stands for "bucket brigade-delay", referring to how the signal is passed from transistor to transistor, resulting in a degradation of signal. You'll find BBD chips in many analogue-style delays for this very reason.

    Read: How To Use Guitar Delay


    Boutique

    "Boutique" is a term widely used to describe guitar pedals made in small volumes, often by hand, with high quality components and eye-catching artwork, but it is actually defined as "a small fashionable business that sells a particular product or service". We believe "boutique" is best used to describe the very high quality tones these pedals are capable of producing, hence our slogan: Artisan Pedals | Boutique Tones. See ARTISAN.

    Read: What Is A Boutique Guitar Pedal?


    Buffer

    A buffer is part of your signal chain that preserves tone. Often found in guitar pedals, it amplifies or 'buffers' the signal to help it through a pedal's internal circuitry with minimal loss. You can also purchase standalone buffers. Buffers are perfect for combatting signal degradation from long cable runs or large pedalboard setups.


    Clipping

    Clipping is a type of waveform distortion that occurs when you push a circuit beyond its capabilities, leading to the peaks of the sine wave turning into more of a square wave. Different components clip in different ways; the two key types of clipping are soft and hard clipping.

    Read: What Are Clipping Diodes?


    Diodes

    Diodes are components used in a guitar pedal to achieve clipping. There are many different types of diode that can be used, including silicon, germanium and LED. See CLIPPING for more.


    Four-Cable Method

    Used to connect pedals up to your amp so that boost, distortion, wah etc can go in front of the amp but time and modulation effects such as reverb, delay and phaser can go through the amp's effects loop - i.e after the preamp section.

    Read: What Is the Four-Cable Method?


    Germanium

    The element germanium (Ge) is used as a semi-conductor in transistors and diodes. Germanium components were used in early guitar pedals, such as the Dallas Rangemaster Treble Booster, before being replaced by more stable, higher purity silicon. Germanium transistors and diodes are revered these days for the warm, organic, "vintage" tone they confer on pedals but they can be extremely sensitive to temperature changes, unlike silicon.


    NOS

    NOS is the abbreviation of "New Old Stock", referring to original vintage transistors, resistors and diodes that have never been used before. Some pedal builders scour the globe for small batches of these finite components. They are favoured in vintage-style circuits to help get as close as possible to the original pedal.


    Oscillation

    Described by the Cambridge English Dictionary as "a regular change in strength or direction in a wave or electric current", oscillation in the context of a tremolo pedal refers to the rapid increase then decrease in volume of the soundwave.


    Patch Cable

    Patch cables are short instrument cables (1/4" TS unbalanced) designed to connect up several guitar pedals while minimising cable length. Excess cable length can not only get in the way but it can also affect tone.

    Read: Guitar Cable Tone


    Power Supply

    All guitar pedals require a power supply. The vast majority run on 9V, allowing a battery to be used (if there's a battery snap built into the design of the pedal). While it's important to ensure your pedals run at the correct voltage to avoid damage, it's also important to pay attention to the power draw in mA. If your power supply doesn't provide enough mA, your pedal may not work correctly. Most analogue pedals typically draw between 50 and 200mA, while digital pedals prefer much more - up to 500mA. If you own several pedals it's worth investing in a multi-pedal power supply with outputs that allow you to tailor power delivery for each pedal. 


    Silicon

    Silicon (Si) is the element which largely replaced germanium as the semi-conductor of choice for pedal builders from the late 1960s onwards. Unlike germanium, silicon is temperature-stable and its purity enables a fuller tonal signal to pass through. It also appealed to builders as it's cheaper to manufacture silicon-based components. In character, silicon-based pedals can be said to be more aggressive compared to germanium equivalents.


    Stacking

    Stacking is the act of combining two or more drive pedals in order to push the input stage of the subsequent pedal for a saturated, full character. Careful balancing of gain stages between the pedals can also achieve more nuanced tones than a single pedal can produce.

    Read: What Is Pedal Stacking?


    Tap-Tempo

    Tap-tempo is built into many digital time-based pedals, allowing on-the-fly adjustment to rate or time parameters in time with the tapping of your foot on an integrated or external footswitch.


    Valve

    Valves can be used in pedals to give a more amp-like, analogue character. Some players value the response and transparency that valves give compared to MOSFETs, op-amps and transistors.

    Read: Valves In Guitar Pedals


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