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Employing an Electric Druid TapLFO3D (which delivers 16 different LFO waveforms), MadBean's "WaveLord" tremolo is one of the more versatile DIY tremolo circuits out there. An easy enough build, but a bit challenging to get all the controls leveled out for stuffing. An excellent choice for a...

Does anyone know of a DIY crunch/distortion/over-drive pedal circuit that allows the user to control how clean or dirty the sustain/release transient is? I'm looking for a crunch/distortion DIY circuit that gives control over how much distortion is in the sustain and/or release of of the signal...

Found this neat site with some interesting tools for DIY Audio Builders - https://mcphersonmusic.nz/pages/tools

Having a Peak Atlas DCA75 Pro for over a few years now, it hadn't occurred to me to check to see if any firmware updates were possible or even available. Turns out that Peak Electronics did have an update. After downloading and installing it, my DCA75 Pro seems to have stopped reading some J201...

Stereophonic Gizmotronic Symphonic Harmonic Perambulator Plus! (Rack-Mount Version) A few years ago I took on a custom project for a studio in Louisiana. It was far more work that I ever anticipated. But was able to complete it and the testing of it blew me away. The word “lush” does not even...

The penultimate of my tremolo build series is the FuzzDog "Gristleizer". A dirty, fun tremolo/modulation circuit. The Speed indicator LED is subterranean beneath the decal under the cat's left eye.

Found a small box of 5 GuitarPCB PUFF (Pumped Up Fuzz Face) boards with just the appropriate number of pre-measured & selected NOS PNP Ge BJTs with enough of the BOM'd charge pumps& pots, and decided to put that project to bed. Straight forward builds that work fine, but I tweaked them a bit to...

Now that the enclosures (1590B) are done and have arrived, (another shout out to @amplifyfun), I've been able to finish a small batch run of Germanium Filters - as shown by @Chuck D. Bones in his Breadboard Series on the DBA Germanium Filter. Using carefully selected MP10B NOS BJTs, this...

Another small batch run of Kliche (Klon clone) pedals. Not really sure who ran with it first, but the 'My Little Klony' theme has a catchy and locally popular appeal. The two local music shops who carry my builds asked for more of them by name; so, more it is. Hats off to @Robert for the...

Does anyone know of an available & verified PCB for the Germanium Filter. I tried Moonn Electronics, but the order I placed went unanswered for two months so I submitted for and got a refund from PayPal. I could prolly do one up in Vero/stripboard, but I prefer a prefab PCB. TIA!

After completely redoing the enclosures, I've now finished a coupla Overcast Fuzz pedals. (The first go-round I had the Volume & Sustain labels backwards.) I went with @Chuck D. Bones' 0.1.1 modification of the circuit and bent the PedalPCB circuit board accordingly. I tried the original...

The PCBMania Watchtower is more than just YATS. The multiple clipping options alone make this pedal a worthy build. But with the voicing switch; togglable "Bright" & "Buffer" options; and two, footstomp-swappable, independently controllable gain channels, this build becomes an adventure in OD...

I ran into a monolithic IC named the UAF42 (Universal Active Filter from TI or Burr-Brown) and find it quite interesting for potential use in pedals where flexible LP, BP HP & Notch filters can be applied. Anyone else know of this chip, seen it or used it? They run rather expensive at bout $42...

The DEFX "Pretty Tears" project is (IMO) pretty spectacular. Just finished building mine (didn't rock it before boxing it) and fired it up. Bypass works fine. But when I the engaged the pedal (the LED lit up - YAY!) it made no sound. WTH???? So I futzed with the knobs & switches and got nothing...

Just got a set of DT71 Digital Tweezers. Anyone seen/heard of or use these?

Found an old (May/June 1981) issue of Polyphony with some "Tricks with the SN76477". It's an old, out-of-production sound generator chip with a lot of interesting features/options. The chip is only available from eBay where I found one reliable USA seller who has some NOS of them for $25.00...

The DeadEnd FX 'Reflektor', IMO, is quite a complex build; especially when it comes to housing the guts. Make three or four tiny mistakes on the enclosure drills and artwork and bench-life gets intense. (3 labels in wrong spots, missing expression label and control drills just 1mm to close to...

Finished building out three of the Creamery Compressors and they all perform differently. One works as I suspect it ought to. The other two have different control (pots) issues. In one, the Compression pot seems to do nothing, the Level (volume?) seems quite weak, and the Attack really kicks...

Nice optical compressor circuit from GuitarPCB, their "Squishy Octopus" board (DOD 280 Compressor clone). As it says on the label "squishy"! I'm guessing it's the reactance timing of the optic coupler.

Just finished up a custom PPCB combo build for my grandson. Using PPCB's Heaphne Amp and their Gravitation Reverb boards, I put together this nice little unit so he could practice without disturbing his neighbors. The 'Stereo Spread' is a nice feature and WOW does it get loud. The added reverb...