PCBs and general enquiries

Hi there! I ordered a SLO PCB last week (Thursday night, which may have been Friday morning in the UK) but haven't heard anything regarding shipping. Admittedly, it is to the US, so I imagine that complicates matters, but I've even emailed Andrea without reply.

I also noticed that he had posted on Reddit yesterday but somehow his account got banned, which is confusing since I can see deleted posts (I have moderator tools at my disposal) and see absolutely no reason to have banned his account from the whole platform.

So, I'm just wondering if everything is alright over there in London.

I was wondering if there was a specific part number/manufacturer for the PCB mount 25K pot? I'm having problems finding one that matches the pin layout on the PCB.

What is the difference between the circuit board version 1.0 from 2020 and the current version of the current version dated 2025? I purchased a board off of eBay and the seller failed to disclose that the board was version 1.0 dated 2020.

Hello everyone! I'm building the SLO 100 for a friend, and I am really struggling with finding appropriate transformers. What are you guys using?

I'm in the US. I found an EU seller, but he doesn't ship to the states.

I could purchase the Onetics set from C3, but they're over FIVE HUNDRED DOLLARS. That's (respectfully) insane.

I've emailed Hammond to find an appropriate set, but they don't have anything that matches the specs for the Power Transformer. Any help is greatly appreciated. I'm willing to step this build down to 50 watts or literally anything that makes this cost effective but still fully functional.