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Enclosure not stated · 3 knobs

Tagboard Effects

Barber Gain ChangerVerified

Based on the Barber Gain Changer· 1 other board clones it

Category
Distortion
Controls
Gain · Tone · Volume
Build
Vero· 20×14· 18 cuts, 4 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Barber, Distortion, Overdrive

From the post

Another versatile overdrive here from Dave Barber, and as usual at a very fair price. If you want to fine tune the mids and bass content to suit your own style or gear, consider socketing the 7K5 resistor on the right for mids, and the 22K resistor at the top for bass.

Info about the original:

Measuring only 2.3” wide, the NEW Barber Gain-Changer harnesses a vast spectrum of EQ and gain. Flick the toggle one way and you have sweet very low-gain overdrive, flick it the other way and you get wildly charged harmonic content of our much praised unLimiTeD distortion. Pop over to the other toggle-switch and you can volley between the flat sweet-EQ of the LTD SR , the vintage snarling-fat-EQ of our classic LTD v2 or a new voice that combines flat EQ with a little added fatness. Combine all these different options together and you have a super-versatile harmonic beast. Our goal was to shrink the size of our pedals and retain all the ultra-high quality electronics and build quality that we are world famous for. In the end, it’s almost impossible to miss the target if you are shopping for a new overdrive for your rig, “it’s like shooting fish in a barrel Jethro.”

The Gain-Changer has real honest solder lugs for jacks, True-bypass footswitch, toggles and pots. There are no worries about PCB mounted thru-panel parts that can’t be serviced on the road, or that lead to high cost repairs. Nothing but the best tried and true hand-built methods adorn the interior of the Barber Electronics Gain-Changer. The Gain-Changer has a generous 2 1/2” of clearance between the front edge of the footswitch and the back edge of the knobs, no more worries about changing your settings with each click of your footswitch. Buy a hand-built Barber Gain-Changer, and enter a world of immense overdrive possibilities.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.

Parts list 38 rows

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Check before you build · 1 value the reader of this layout was not sure of
  • 13K3 resistor lower left, between 68n and 2K4: printed clearly, unusual value
RefValueNormalizedTypeNotes
Resistors 17
×310K10kread from the layout by eye
×2470K470kread from the layout by eye
×23K33.3kread from the layout by eye
×122K22kread from the layout by eye
×113K313.3kread from the layout by eye
×12K42.4kread from the layout by eye
×12K22.2kread from the layout by eye
×11M1Mread from the layout by eye
×18K28.2kread from the layout by eye
×116K16kread from the layout by eye
×14K74.7kread from the layout by eye
×13K63.6kread from the layout by eye
×1100K100kread from the layout by eye
×11K1kread from the layout by eye
×191R91read from the layout by eye
×17K57.5kread from the layout by eye
×13K3kread from the layout by eye
Capacitors 11
×1100p100pread from the layout by eye
×356n56nread from the layout by eye
×210n10nread from the layout by eye
×168n68nread from the layout by eye
×122n22nread from the layout by eye
×1100n100nread from the layout by eye
×115n15nread from the layout by eye
×147n47nread from the layout by eye
×14u74.7uelectrolytic; read from the layout by eye
×147u47uelectrolytic; read from the layout by eye
×1100u100uelectrolytic; read from the layout by eye
Diodes 4
D11N41481N4148read from the layout by eye
D21N41481N4148read from the layout by eye
D31N41481N4148read from the layout by eye
D41N41481N4148read from the layout by eye
ICs 1
ICJRC4558JRC4558read from the layout by eye
Potentiometers 3
GainA1MA1MPotentiometerread from the layout by eye
ToneB100KB100kPotentiometerread from the layout by eye
VolumeA100KA100kPotentiometerread from the layout by eye
Switches 2
GainSPDT on/onSPDT ON/ONtoggle; read from the layout by eye
EQSPDT on/off/onSPDT ON/OFF/ONtoggle; read from the layout by eye

Other boards based on the Barber Gain Changer