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BYOC E.S.V. Fuzz (Extra Special Vintage) Germanium PNP Version AC128

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Do we really need to describe what the Fuzz Face does or tell you why you want one? Every guitarist, regardless of their playing style or preferred genre, needs one. With carbon comp resistors, those shiny blue Vishay electrolytic caps, and that big flat yellow film cap, the BYOC E.S.V....


Do we really need to describe what the Fuzz Face does or tell you why you want one? Every guitarist, regardless of their playing style or preferred genre, needs one. With carbon comp resistors, those shiny blue Vishay electrolytic caps, and that big flat yellow film cap, the BYOC E.S.V. Fuzz kit has as much vintage mojo as the original, but with the modern conveniences of an LED status light, DC adapter jack, adjustable bias, and true bypass. That's why we call it Extra Special Vintage.
The BYOC E.S.V. Fuzz kit comes in two different versions: Silicon or Germanium. The germanium version comes with AC128 transistors made by New Jersey Semiconductor. We thought we were going to have to discontinue this kit because we couldn't find suitable NOS transistors when our previous lot ran out, but then we found these new production American-made germanium transistors. These sound every bit as good as the NOS Euro-made AC128, only they are far more consistent and reliable because of new production methods. The silicon version has two choices. You can choose either the more traditional BC108, or the extra-high gain BC109C.


Q: What's the difference between Silicon and Germanium transistors?
A: Germanium transistors are what were used in the very first Dallas Arbiter Fuzz Faces. The original Fuzz Face used NKT275 transistors made by a British company called New Market. The NKT275 was New Market's version of the AC128. At the end of the 60's, Dallas Arbiter began using BC108 transistors instead. Germanium transistors have a slightly darker, warmer, and woolier sound. They can also "clean up" with the guitar's volume knob much better than silicon transistors. Silicon transistors have a little more gain, sustain, and brightness. The typical example of famous recordings that compare the two are early Hendrix (Experience) vs. later Hendrix (Band of Gypsies). Most people prefer germanium. The people who prefer silicon are usually going after a very specific tone such as Hendrix on Band of Gypsies, or David Gilmore on Dark Side of the Moon. One big advantage of silicon (or perhaps a better way to put it is a big disadvantage of germanium) is that its gain does not fluctuate with temperature. The gain of germanium transistor will increase as the temperature goes up. They become essentially useless in any settings that are warmer than room temperature. Silicon does not have this problem.

Q: What's the difference between the BC108 and BC109C silicon transistors
A: The BC108 is the traditional silicon transistor for the Fuzz Face. These were actually only made for a very short period of time. The trademark "Fuzz Face" has changed hands several times and there have been several reissues. One of the most sought after reissues is the BC109C version produced by Crest Audio. The circuit remained exactly the same as the original, they just used higher gain BC109C transistors. The BC109C version has a little more fuzz, a little more sustain, and a little more treble, but it also has a little more noise.

Q: What's the difference between PNP and NPN, what's the difference between positive and negative ground, and how will this affect my power supply?
A: If you don't know what PNP and NPN are, you don't really need to worry about it. It just refers to the polarity of the transistor. PNP transistors lend themselves better to a positive ground and NPN lend themselves better to a negative ground, but as with most rules there are always exceptions. The original germanium Fuzz Face used PNP transistors and had a positive ground. The silicon version used NPN transistors and had a negative ground. Positive ground means that the sleeves of the jacks, the chassis/enclosure, and ground of the circuit are all connected to the positive terminal of your power supply. Negative ground is the same thing, only everything is connected to the negative terminal of your power supply. Positive ground effects were more common in the 60's, but today, the overwhelming majority of guitar effects have a negative ground. Almost all DC adapters and power supplies that are intended for use with guitar effects have a negative tip. It makes ABSOLUTELY NO DIFFERENCE if you build your BYOC E.S.V. Fuzz kit with a positive or negative ground with regards to the power supply. The adapter jack of your pedal will still always be wired for a negative tip. This means that you can use any standard negative tip guitar power supply with the BYOC E.S.V. Fuzz kit regardless of whether it has a positive ground or a negative ground. The only thing you cannot do with a positive ground pedal is use a daisy chain power supply (such as the 1-Spot) with other negative ground pedals. You can use a daisy chain power supply, but all the pedals that share that daisy chain must all be positive ground as well. You also need to be careful of power supplies like the Dunlop DC Brick. It may have multiple taps/outlets, but they are still all daisy chained on the inside. Only power supplies with isolated outputs can power positive and negative ground devices at the same time. If you're not sure whether or not your power supply has isolated outputs, it probably doesn't. It's a feature that the manufacturer would probably want to tout and you pay extra for it. If you want to use a DC adapter power supply with your E.S.V. Fuzz kit, and you built it with a positive ground, the best thing to do would be to get a single standard negative tip wall wart (like the BOSS PSA series or something similar) just for this pedal. Chances are, it will be your only positive ground pedal.

UPDATED VERSION: This version has been updated so that the PCB can be built with a positive ground for PNP transistors or with a negative ground for NPN transistors. All you have to do is add a pair of jumpers. Note that if built with a positive ground, you DO NOT need to use a special power supply. You can still use any standard negative tip "guitar" power supply. You just can't daisy chain it with other negative ground devices.

All New products are covered by the manufacturers new warranty. Please check their website for the length of warranty and warranty conditions.

If an item you receive is faulty get in touch with us ASAP.

Second Hand products come with a 10 day warranty from us. If there is an issue let us know ASAP!

This covers normal use and does not cover accidental damage, misuse, wrong power plugged into it, modding, water damage or any other damage caused by mistreatment.

Just treat it nice and all will be good!

Please don't email 5 weeks later and say there was an issue within the first 2 days or something like that because we won't be able to cover it.

We send A LOT of packages every week so don't worry about the shipping side of things!

We've never lost a thing and your awesome new gear will be packed up really well to avoid any damage in transit.

If your order comes in before 2pm we will ship it same day. Most of the time we pack things up all the way to 5pm so just call if you need it to leave same day after 2pm.

We ship with Australia Post and a variety of couriers depending on location.

Free Post ships with Australia Post standard and expected shipping times are between 4-6 days depending on location. It will be longer to outside of metro and rural areas.

Express Post will usually be with you next business day in metro areas of QLD, NSW, SA, VIC and TAS. WA will take 2 days to metro and extra days after that to out side metro and rural areas.

Everything we ship has a tracking number with the exception of some power cables and smaller envelope packages. You will be emailed tracking once your order has been shipped!

"LOVE IT Or Exchange It Within 14 Days"!

The item MUST BE sent back in the same condition it arrived in and have all the materials it arrived with (manual,warranty card,all accessories) and be packaged in the original box.

Items returned in undesired condition (scratched,chipped, etc) will be subject to a restocking charge of up to 30%. Modded items will not be refunded!

Postage must be paid by the purchaser to get the item returned to us and we will exchange at our discretion the amount of the products but not the postage costs.

Items must arrive here within 14 days of your order being placed.

Some items cannot be returned like Pedalboards you have already put velcro on, strings, pedalboard tape, Cables and DIY cable kits.

Please don't use the Manufacturers box as the packing box or you will automatically be charged a 30% restocking fee!

Email us BEFORE returning your items so we can resolve or sort out any problems you may have and just so we know to expect the item. You may also want to insure or register your item as we don't take responsibility for lost or damaged post.

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