Found this in my pile of parts. I can’t even remember where I bought them, or if they’re still working. It looks cool though, don’t you agree? 
Here’s more information about these TransAmps for those interested… 
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Found some low voltage tubes on eBay, and that started a curiosity in researching and learning more about the history of these “space charge” tubes. https://en.wikipedia.org/wiki/Space_charge 
Basically, Space Charge tubes are designed to operate using low voltages, instead of using high voltages …
Yay! NK-72DI Mic Preamp kits are now shipping. I’m still slowly ramping up, but this is a milestone. I’m happy. Also, the assembly guide PDF is also finished and will be available on the website for download. 
I still need to update …
A customer’s build and comment regarding our SK-1DI Mic Preamp. http://fivefishaudio.com/500serieskits/sk1di/
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Gold-plated fingers on your 500 series FiveFish preamps, to go with your bling! I used gold-plating in connectors like these PCB pad fingers not just for show but because gold-coated contacts are highly reliable, and corrosion resistant. These contacts should last for many decades and look just as good from …
Found this photo in facebook, of a vintage SC-1mk500… 2009/2010 era! Thanks to Fred! // Found a way to embed facebook posts in a blog, so this is the first posting!
Frequency (f) is the number of repeating events per unit time. So if something is vibrating at 20 times per second, then it’s said to have a frequency of 20 Hertz. If something is vibrating at 200 times every 5 seconds, then it’s said to have a frequency of 40 …
So let’s say you want to own some 500-series lunchbox modules, could be a mic preamp, compressor, or equalizer unit. The problem is you don’t own a lunchbox rack. Even a blank 6-space rack can cost a pretty penny, and you still end up with no modules after purchasing the …
Our front panels are anodized aluminum, with engraved labels. The stock SK-1DI mic preamp kit comes According to Wikipedia, Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. The process is called anodizing because the part to …
Let’s talk about decibels (commonly abbreviated as dB)! 
What is dB? The simplest way to explain it is “decibel (dB) is just the RATIO of 2 numbers.” That’s all there is to it, it’s that simple. To be more exact, dB …
