This was a great build to do (my second) and so satisfied with the results. Not a hard build so a good one to start with.
It's ended up at the beginning of my pedal train and mostly used for that slight breakup or mild crunch. Great in combo with another drive pedal further in the chain. Its particularly good in that it doesn't change your guitars original tone but adds the necessary crunch/texture.. It can really drive hard also if that's what you need.

Being a bit underwelmed by the tone control on my EMG Active P. I decided to give this preamp a go because I like the idea of adjusting high and low mids in a band mix. It's fantastic. Prior to installing this preamp, I would never use this bass and was getting ready to sell the EMGs.

I ordered this pot to replace a faulty one in a Fender PBass special. Exact fit and much higher quality than the stock part.
Excellent service from The Really Great Pedal Co.

Fantastic little preamp to give that juice to your tone. It has gone straight onto my pedalboard! Extremely friendly build for beginners 10/10

Great build quality with attention to detail. Top notch customer service. Highly recommend.

A free PCB and they were very generous and helpful with it!!

Absolutely NUTS for this build, highly recommend. I think the original PLL pedal is wild enough for anyone but this goes even further. They've added aaaaaall the weird extras and add-ons that Mr Schumann created later and put them on the one PCB so they can live in the same enclosure. CV-Out too, bonkers.

I purchased this Beta Lead pedal a couple of years ago. Really impressed with the build quality and crushing tone!

Makes wiring up a footswitch fast and easy!

Really nice pedal, good construction, works as expected. Only one thing…no little slip of paper explaining the nuances of this rev of clone…figured it out by process of elimination on the acclam site. Mostly the operation of the boost (Mach Schau) knob vs the level knob…no biggie. Gave me a reason to play more with it on first opening :-)

Bought this preamp on Reverb in June 2025. Postage with AusPost was as fast as expected. Installed preamp into my Aria Pro II bass with MM style pickup that had been gutted of it's original preamp by a previous owner. Installation was easy, despite being limited on space. When I first plugged in, there was no signal and a loud hum. I double checked everything and connections were correct. I reached out to Jason and this is where his exceptional customer service comes in. He identified the problem was that he sent me the wrong jack for this particular preamp. He then sent me the correct jack (with extra wire length) for free! Unfortunately due to my circumstances... the project sat untouched for a couple of months and I missed the opportunity to leave glowing feedback on Reverb thanking Jason for his customer service, but for his high quality product that brought my bass back to life. I could not recommend Thereallygoodpedalco high enough! I will definitely be purchasing other preamps/products in the future when other projects come up.

This is an amazing pedal. Combination fuzz and envelope filter, each side is great individually but the responsiveness of the filter with the link switch engaged is off the charts. The original Chunk Systems pedals could only be connected with a jumper cable, and they’re long out of production so very pricey if you can even find one. Custom order is the way to go, dozens of options and the builder worked with me and kept me informed throughout the process. Highly recommended!

Excellent quality workmanship, sounds good, affordable price.
Leds just right and not blindingly bright
Would buy again.

I've not had the pleasure of playing through any Chunk Systems gear, but based on my internet research, and some samples posted on Talkbass, the Funky Puppy seems to nail it.
I have never experienced a filter like this one. The response, range, and tone are pretty unusual in my experience. I'm smitten. It's possible to find settings that cause the filter to open and close in a very non- linear fashion. Squelch yields a similar result to Resonance on other devices, but also has a notably different character than resonance. There is much more deep diving to be done. The Fuzz is a solid offering that pairs extremely well with the filter, and the envelope link plays a huge role. What a cool, fun, musical device, and the Hammered White finish is a nice bonus.