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The Valve Stem OD (MI Audio Tube Zone) calls a B20k for the presence control (this was an internal trimpot on the original). With B20k pots not being available from my usual parts sources, I'm just thinking about using a B25k I have on hand with 100k resistors to mod the value to 20k and wanted...

All other variables being equal (i.e. ignore any component value differences between the schematic examples), would moving the low value output limiting resistor after the voltage divider (coupling cap and shunt resistor) have any impact on the output signal? If I'm calculating correctly, it...

Looking for a reverb build for acoustic guitar to add depth and offset the piezo tone with some "realness". Not looking to get wild and wacky. Not springy or zingy. Lush, like a nice acoustic in a good sounding room/hall. Any suggestions?

I'm searching for a preamp/aiab circuit that can get relatively close to mid 90s Trey/Phish tone (Mesa Mark III). Not the TSx2 into Ross part, but the amp tone itself. Haven't come across much in the way of Mesa Mark series voiced pedals. Plenty of Dual/Triple Rec ones, including the Dr Boogie...

Finished the Aionfx Elysium (Ibanez EM5 Echo Machine) yesterday. The effect sounds great, but the dry signal is considerably louder than with the pedal off, making it nearly unuseable unless always on. The pedal has control for the Level of the repeats, Feedback, and Delay, but not the dry...

Just getting started on a Sabbath Distortion for a buddy. For the BC184, I'm ordering it from Amplified Parts, and they offer the BC184 in a B or C version with the difference being the gain ranges: B 240-500 vs C 450-900. Any recommendation on which to go with?

I have 4 dragons breath pcbs for a small batch. I haven't built this one before. Built the first one. Nothing. Passes signal in bypass, LED lights when activated, no sound. Triple checked all the parts were correct values and correctly oriented. Reflowed solder joints. Tried a second 2n2222a...