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Does anyone have any recommendations for a tube headphone amplifier DIY project? A DAC isn’t necessary.

Is there a way to automatically remove tracking junk from URLs?

I’m measuring power in the Equilux after power is cut (and the LED will stay lit for a bit). Have others noticed this? Not sure if a schematic is available for this one, but I suspect the inductors are storing then draining power.

Looking for a recommendation for a transistor fuzz circuit that’s more buzzy than smooth, punchy mids, light on the low end, non-octave, and preferably Si rather than Ge.

Can a dry out be tapped from the input jack on the octarock without losing signal strength? I’m thinking the input impedance should be sufficient, but wanted to be sure.

I have a few different tap tempo pedals on my board. I'd like a way to use a single tap tempo module to send signals to each. My first thought is to use an arduino unit since that would make NC/NO behavior easily selectable (to accommodate Boss pedals), but I feel like that might be overkill. Is...

Is the google search option still available for the forum?

I primarily use macOS machines and I’m looking to start programming my own EEPROMS and MCUs (either PIC or ATtiny). Looking for any advice and recommendations folks may have for macOS-compatible hardware/software.

Looking for a simple, reliable countersink bit for use with pedals. I'd like to get just one that covers as many applications as possible. Show me what you got.

Is it typical to have a bit of play (vertical and horizontal) with pcb-pin sub mini toggles? I have some installed on a build and they have a bit more movement than I had expected. It seems like it’s normal (I used a flat pliers to grip some others in my stock to compare behavior), but I wanted...

I’d be interested in learning more about state variable filters and biquad filters if you’d want to expand the tone stack series.

This is my contribution to the Pedals for Ukraine 250/Dist+ Reverb sale. It's built to '79 grey box 250 specs on an Effects Layouts' DRIVESTORTION board storyboardist generously provided. The only deviation from the stock circuit is that the clipping diodes are 2x1 asymmetrical 1n4148. With the...

Is is possible to control two Intelligent Relays Bypass units with one SPST switch, or will each need a dedicated pole?

Another brilliant project from the folks at Lectric. This is a (rather obscure) EHX analogue delay that builds upon the DMM foundation by adding another MN3005 BBD block. I've always thought of the DMM as the analogue delay—but this may surpass it. It's got everything the DMM offers (solid clock...

I'm looking to adapt the RG Keen "Panning for Fun" circuit for a project. I had some questions about the first op-amp stage of the 'high-impedance' version. First, is the first op-amp being used as a differential amplifier? If so, this means that the typical inverting op-amp calculations...

What is the 47k resistor on the earlier rev of the board doing? It seems like that's the only circuit difference (beside the addition of the channel switching functionality in the newer boards). Also, what is the approximate voltage output and current limit for pin 5? I'd like to drive an LED...

Is there a way to variably alter the frequency response of an N-Channel JFET amplification stage with a pot instead of a toggle for the source capacitor? I'd like to keep the gain static and not disrupt the Vgs bias voltage in the process.

This thing is incredible. It's an extremely versatile modulation circuit capable of delivering hollow pipe and jet engine flanger sounds as well as subtler flanger movement. Beyond flanger, lush chorus, vibrato, percussive tremolo, and a pseudo-phaser can be dialed in. Removing the LFO allows...

A friend is looking to hit McCartney bass tone (specifically abbey road). I’m thinking compressor (fast attack/slow release) and some dirt. There’s of course no shortage of Beatles in a box guitar pedals, but I’m interested to hear some bass ideas.

This is the second of two builds of which @jjjimi84 was kind enough to lend his artistry. The inspiration for these were my and my partner's dogs. My dog Faust is pictured here. (Part 1 here) The Dragon Hound is a parallel overdrive (modified Pale Horse TS-inspired) / distortion (modified Alpha...