UBE Screamer v2
Here is an updated post for the UBE Screamer v2. The UBE Screamer was invented by the smart guys over at RunOffGroove.com, tireless purveyors of all things stomp box from the early days of the hobby. The UBE Screamer was…
Tag runoffgroove
UBE Screamer 4069
I wanted to do something a little more artful as a box. The Joy Division’s Unknown Pleasures has a very iconic image. I don’t know what the secret sauce of this image is but it’s very compelling. From what I…
22/7 4069
First build of 2022! This is a 4069 version of RunOffGroove’s 22 The original uses the 4049 hex inverter. This the same circuit using the 4069. Both chips contain 6 inverters but the they differ in format and layout. The…
UBE Screamer 4069
This is a version of the UBE Screamer using the 4069 in place of the 4049. Essentially these chips are the same. They both contain 6 inverters. The 4049 is a 16 pin DIP while the 4069 is a 14…
22/7 4069
Here is a version of RunOffGrooves 22/7 using the 4069. The original circuit uses the 4049 Hex inverter. The 4049 is a 16 pin dip with 6 inverters. Here is the 4049UBE data sheet. You can see it has 16…
Another fail!
Here is a UBE Screamer with blend knob. I left a resistor out of the mixer and mixed up the Blend and Gain labels, double fail! As long as I’m going to screw things up I like to go all…
UBE Screamer v2
I made an update to the RunOffGroove UBE Screamer from a suggestion in their notes. This version adds a mix control the blends some of the original signal with the distorted signal. The original uses Rx to set a fixed…
UBE Screamer 1.1.1 build
Built and tested the new version of the UBE Screamer PCB. Everything is working! Sounds great. This is a good alternative to the standard TS-808 and other overdrives if you’re looking for something a little different. Does great low gain…
RunOffGroove 22/7
I updated my 22/7 PCB. I had these boards made at PCBWay.com. These boards are great quality. Very cost effective. I’m a fan of OSH Park.com. They are good when you want only three boards, are in the US and…
22/7 PCB Order
I just got these PCBs in the mail from I’m impressed with the quality. This is an update of my my 22/7 PCB. I made a couple small improvements. The 22/7 is a CMOS based Big Muff. A very…
RunOffGroove.com turns 20 years
RunOffGroove.com is one of my favorite sites for original stomp box inspiration and innovation. I built my first projects using the schematics and layouts there. The ideas presented are innovative. I’m very impressed with the UBE Screamer and 22 You…
New Boards from PCBWay
Just got some new boards from PCBWay.com. These are RunOffGroove’s 22 This is a Big Muff built around MOSFet inverters in place of the Bipolar transistors used in the standard Big Muff. This is a great sounding Big Muff. If…