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Use the classic RG Keen rule: if you're unsure, a 2N5088 will probably work.

Ok, have some spare time so decided to poke around with this. I've now changed every active and the tube, and it's EXACTLY the same. I also put the board through a IPA wash in an ultrasonic cleaner so it is as clean as it could every possibly be with no changes. I'm pretty much calling this a...

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I...uhhh...any reason any of the messages I've sent about this have been unanswered? It's literally been months. I just need a date so I can plan a number of builds out that are for charity.

Heaters: 150ma per tube (~2.5x that on startup) Plate current - 8-10x (HV/Rp+Rk)) per tube ~3-5ma for the LED whatever any FETS/op-amps need

Or you get some red LED's from that Tayda batch that are all backwards....

IMO anything from 220-470uf is fine. I have done pre/de-emphasis on EQ's, but typically wouldn't on most other pedals - even then I removed the pre/de circuit and found it made such a tiny difference I could have entirely omitted it and probably never heard a difference. I have never found a...

I live at the base of a radio tower, so I've always had issues with noise. Originally I thought it was just a noisy power supply, but after moving things around my house/trying different properties, playing with faraday cages, etc I found something super weird - I had RF noise from the power...

Been trying to see when this bad boy is gonna be in stock. Sent off a couple of messages to find an ETA and gotten no reply. Anybody know roughly when they're going to available? Postage to Australia sucks so trying to get a couple of boards together. Cheers!

God I hate how pads look in the new PCB editor :oops:

Based on other peoples testing and what I've done, there's a couple of easy mods to squeeze some extra chooch out of it: *change to higher current inductor (as they're already on the border of being saturated) *change to a lower Rds MOSFET which allows more current (I use a IRFB17N50) *modify...

I've tried three different power supplies - everything from isolated switchmodes capable of 12v/1A, to unregulated 12v plug packs. No change whatsoever.

Yep. I got dozens of them, and only figured out when the classes I was teaching had working pedals but no LED. It's very annoying :ROFLMAO:

Did you ever get this sorted? Mine also has horrific noise, but it doesn't go away

Squeal significantly louder than signal levels

Ok, tried a few things: Decreased R5 (plate resistor on second stage) from 220k to 100k. No change Tried an old EHX 12AX7B I had spare from my amp. No change. Tested a 100pf cap in parallel with R13/R14 for RF suppression coming in, as well as across D/G of the J201 (in case it's oscillating...

Howdy, Built a King Nothing. Everything works fine, voltages are spot on (254v on the plate resistors, and 29v heading into the J201), but there's significant amounts of oscillation that decreases as the gain is turned up. Low switch has no impact on the noise, but the left position of the mode...

Complete isolation between the pre-regulated power and signal circuits, allowing any power supply to be used.

Rust-Oleum Matte Black printer + Dulux Marble Effects Gold. Couldn't have been easier if I tried. Pretty happy with the timber, and confident I can get the other build I'm working on done as I imagine it (if enclosures ever turn up from Tayda)

Got the base cut finally - very happy with how it turned out!