- The EP-3 circuit was modified slightly after serial #9450 to add a bypass capacitor to the FET stage. (There are a couple of other tweaks but this one has the biggest effect on the tone.) I made this capacitor switchable so you can easily choose between the two versions.
- The Xotic EP Booster really is a magical little box. Once you play through this pedal you may never want to play without it again. The EP Booster will add a new dimension to your tone, revealing a harmonic character that seems to upgrade your sound in the best possible way.
- Ep Booster Circuit
- Ep Booster Circuit Case
- Ep Booster Circuit Breakers
- Ep Booster Circuit 2
- Ep Booster Circuit 3
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EP Booster is perfect to boost the guitar adding some sparkle and definition. It sounds great over all the frequency range.
Steps
Categories
Tayda Electronics Kits, DIY Projects, DIY Guitar Effects
EP Booster Step 1 of 4
![Booster Booster](https://www.thomann.de/pics/bdb/235844/7008392_800.jpg)
EP Booster is perfect to boost the guitar adding some sparkle and definition. It sounds great over all the frequency range and incorporates bass and treble switches.
Materials list
PCB
1 x EP BOOSTER DIY PCB
Capacitor
C1 47n 47NF 0.047UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C2 10u 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C3 10u 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C4 100u 100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
C5 3.3n 3.3NF 0.0033UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C6 10u 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C7 10u 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C8 47u 47UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
Diode
D1 1N4148 1N4148 SWITCHING SIGNAL DIODE
Transistors
Q1 J201 J201 JFET N-CHANNEL AMPLIFIER TRANSISTOR
Q2 2N5088 2N5088 NPN GENERAL PURPOSE TRANSISTOR
Resistors
R1 1M 1M OHM 1/4W 1% METAL FILM RESISTOR
R2 33k 33K OHM 1/4W 1% METAL FILM RESISTOR
R3 1M 1M OHM 1/4W 1% METAL FILM RESISTOR
R4 8.2k 8.2K OHM 1/4W 1% METAL FILM RESISTOR
R5 4.7k 4.7K OHM 1/4W 1% METAL FILM RESISTOR
R6 1k 1K OHM 1/4W 1% METAL FILM RESISTOR
R7 15k 15K OHM 1/4W 1% METAL FILM RESISTOR
R8 10k 10K OHM 1/4W 1% METAL FILM RESISTOR
R9 1M 1M OHM 1/4W 1% METAL FILM RESISTOR
R10 10k 10K OHM 1/4W 1% METAL FILM RESISTOR
R11 10k 10K OHM 1/4W 1% METAL FILM RESISTOR
R12 47k 47K OHM 1/4W 1% METAL FILM RESISTOR
R13 100 100 OHM 1/4W 1% METAL FILM RESISTOR
Potentiometer
GAIN 10k-C 10K OHM C10K 10KC ANTI-LOG TAPER POTENTIOMETER
Switches
S1 (Bass) MINI TOGGLE SWITCH SPDT ON-ON
S2 (Treble) MINI TOGGLE SWITCH SPDT ON-ON
1 x EP BOOSTER DIY PCB
Capacitor
C1 47n 47NF 0.047UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C2 10u 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C3 10u 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C4 100u 100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
C5 3.3n 3.3NF 0.0033UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C6 10u 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C7 10u 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C8 47u 47UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
Diode
D1 1N4148 1N4148 SWITCHING SIGNAL DIODE
Transistors
Q1 J201 J201 JFET N-CHANNEL AMPLIFIER TRANSISTOR
Q2 2N5088 2N5088 NPN GENERAL PURPOSE TRANSISTOR
Resistors
R1 1M 1M OHM 1/4W 1% METAL FILM RESISTOR
R2 33k 33K OHM 1/4W 1% METAL FILM RESISTOR
R3 1M 1M OHM 1/4W 1% METAL FILM RESISTOR
R4 8.2k 8.2K OHM 1/4W 1% METAL FILM RESISTOR
R5 4.7k 4.7K OHM 1/4W 1% METAL FILM RESISTOR
R6 1k 1K OHM 1/4W 1% METAL FILM RESISTOR
R7 15k 15K OHM 1/4W 1% METAL FILM RESISTOR
R8 10k 10K OHM 1/4W 1% METAL FILM RESISTOR
R9 1M 1M OHM 1/4W 1% METAL FILM RESISTOR
R10 10k 10K OHM 1/4W 1% METAL FILM RESISTOR
R11 10k 10K OHM 1/4W 1% METAL FILM RESISTOR
R12 47k 47K OHM 1/4W 1% METAL FILM RESISTOR
R13 100 100 OHM 1/4W 1% METAL FILM RESISTOR
Potentiometer
GAIN 10k-C 10K OHM C10K 10KC ANTI-LOG TAPER POTENTIOMETER
Switches
S1 (Bass) MINI TOGGLE SWITCH SPDT ON-ON
S2 (Treble) MINI TOGGLE SWITCH SPDT ON-ON
Products
![Booster Booster](/uploads/1/1/7/7/117755495/926327795.jpg)
Ep Booster Circuit
After removing the back plate, two tiny DIP switches are located in the upper right corner of the unit, controlling top and bottom end response. One switch flips between either a high-end frequency boost or flattened EQ, and the other provides a increase in the low end spectrum. Using a 2009 Paul Reed Smith McCarty into a 1973 Marshall Super Bass head with a Bogner 4x12 cabinet, I was pleasantly surprised at just how effective the EP Booster was at shaping the overall tone. Not only was the volume boosted, but also the sound was thicker and more defined than before, with no overbearing frequencies. To me, it seemed like having the volume boost option on top of the tonal shaping was like icing on the cake. With the instrument coil-tapped, the boosted tone reared a grittier head, but kept the smooth definition that I had heard only moments ago from the full humbucking mode.Ep Booster Circuit Case
The Xotic EP Booster is more than a simple volume boost; it’s a tonal shaping tool that pushes out all of the right frequencies that are pleasing to the ear. Its diminutive size and easy use makes it a clear winner, but I would like to see the bass and high-end internal switches moved to the front of the unit. Having them in push-button form would be ideal. For its size and set-and-forget attitude, however, the EP Booster is perfect addition to just about any player’s arsenal.Ep Booster Circuit Breakers
Buy if...
You’re looking for a fantastic sounding booster with warm tonal qualities.
Skip if...
You need more features, such as built-in overdrive or an additional separate boost.
Rating...
Ep Booster Circuit 2
Ep Booster Circuit 3
Street $116 - Xotic - xotic.us |