Hipkitty Oxblood Distortion

Information from the builder:

The Oxblood Distortion was designed to emulate the tone and response of an old Vox AC15 with added gain at the input stage. Unlike other Vox-like pedals which emulate the tone and response of the Vox AC30, only the Oxblood Distortion emulates a boosted AC15.

Unique to the Oxblood Distortion is it's ability to make a "large" amp sound "small" and in hyper-drive with the tone of the AC15.

Also unique to the Oxblood Distortion is it's controlled output. While other distortion pedals use greater than unity gain at output to alter the user's amplifier input stages, the Oxblood Distortion does not. This keeps the true tone and response of the effect intact throughout the initial preamp stage of the amplifier in use.

The schematic by WhiteKeyHole that I did this from (big thanks to him as usual for his great tracing) didn't include a supply filter cap, and so I did the layout above exactly as per the schematic.  If you want to include one then you can use the following layout.  I've used an axial cap because I have those to hand in that size, but you could use a radial cap if that's what you have available, and you could probably reduce the layout in width by a column if you do.

A couple of notes based on the FSB thread, if you want more volume then you could reduce the value of the 10K resistor at Q3 collector, for more bite reduce the 220n in the middle between row 1 and 4.  Maybe socket and experiment to fine tune it to your liking.

Skreddy P19

Just to give mirosol a bigger headache deciding which Skreddy pedal to build next .... :o)

Info from Marc about the excellent original:

Specifically tuned to the sound of a block-buster 1979 album and emulates the "magic" 70's era fuzz pedal that was somehow clear and articulate on high notes while still fuzzy and aggressive on low notes, without excessive low-end muffiness or high-end fizz.  The mids are scooped just enough to keep it from sounding congested, the lows are rolled off just enough to keep it from sounding wooly or boomy, and the highs are gentle, present, and well balanced.

Its clarity will encourage you to dig in and express yourself; it's not an overwhelming "wall of fuzz" type effect.

A wide variety of aggressive and clear-sounding applications, particularly excelling in sustaining, biting, legato lead work

EHX Screaming Hog

Request.  Sounds like something from Deliverance.

After the recent Screaming Bird and Hogs Foot posts I mentioned having them both switchable in the same circuit and someone has asked me to post details so this is what I meant.  You can get a 4PDT switch cheaply on eBay, and if you were considering building both this will save you the price of a second box and footswitch, so you know it makes sense!

Rangemaster with switchable input caps

Request.  This is your standard Rangemaster, but with a 5K trimmer instead of the 3K9 to help bias the transistor, and 6 switchable input caps to go from treble boost to more of a full range boost.  It would be easy to add a 3PDT toggle to switch between a germanium or silicon transistor, but I would expect them to bias differently and so don't know how good it will sound switching to silicon when the transistor is biasd for a germanium.

As always though, have a play with the circuit and see what you like, and remember if you want to use this daisy chained with negative ground effects, you could always use the Negative Voltage Converter.

Austone Textone Fuzz Nutz

Manufacturer's description:

Each component is hand tested and selected in this hand- built discrete circuitry beauty. Has more crunch than the original Fuzz Nutz due to an extra gain stage and a tone control. A sustain and crunch monster! Very British sounding. The Textone control rolls off the high end for a singing woman tone, or open it up to peel the chrome off your Tele's bridge! Great for slide, lead, or crunchy rhythm. You must plug this into a wah wah and approach the tone altar!!! Radio frequency interference proof. Each hand-built unit comes standard with a red LED. True bypass switching is retained by using a 3 pole double throw switch. To preserve the battery, the 9V battery power is only available when a plug is inserted in the input jack. A 9V DC negative center tip "wall wart" power supply jack is supplied as standard on all units.

Like me, you may need to fast forward to 1 min 56 seconds! :o)