Works well, pretty straightforward build. I'm enjoying it!

Shameless plug here, Engine V2 is providing both the Bass and Lead: https://www.youtube.com/watch?v=xbVXKY6Es_A

Its just great

Great!

I ordered "Engine V2" in combination with "Exhaust V2" as an expander
to have access to all aspects of sound generation. The outputs of the
expander work well in combination with "Schlappi Engineering Boundary"
and enable interesting possibilities to create rhythmically coupled FM
sounds. That's what I was looking for on first sight.
Nevertheless, "Engine V2" is a successfully complex, well-thought-out
dual oscillator that can do everything from drone to melody and bass.
The genuine and friendly interaction with the customer should also be
mentioned, which shows that they are convinced of the product and stand
up for it.

Components were cheap and easy to source, soldering difficulty was appropriate for a beginner (like me), and the module does exactly what I needed...all at a great price! Love it, 10/10 would recommend.

Nice (and not too expensive) stereo MS20 with a very interesting resonance modulation matrix that deliver acidic "ping type" sweeps as we like. The bass part could have been more massive but are present anyhow. Cool !

4TRG is just the module for the job, everyone needs probability.

Very nice module - lots of experimentation options with the three filter types and the built-in vca.
Fun to build too!

The PCB/panel option is very easy to put together, with a low part count. Four VCAs in 4hp, how can you go wrong? The whole 4 Cubed series looks like great options for compact, affordable utilities.

Great design, easy build. Nice work!

CubuSynth - 4 Cubed Collection (DIY)

thank you for the product

Nice, versatile filter, lots of good tones. Super convenient to have a vca in the same module. I imagine I'll use this in many patches.

So let me just say that I absolutely fell in love with
Not only the engine v2 module but all the other products cubusynth sells, I am relatively new to the euro rack scene but have always wanted to get into it but didn’t like the basic looks and functionality of most modular designs. Having said that cubusynth has changed the game in terms of looks and functionality for all items they sell, I own almost 1 of all the modules they sell and am very pleased with them they make great sound and allows me to make extremely unique sounds I would never be able to do in a DAW program, if you want unique sounds and something cool to add to your eurorack or even starting out to get some new gear in the studio this is a good place to start, starting out with a dual voice VCO with wave folding, chaos implementation, and so much more get these products I love mine and guarantee you’ll love yours if you get some. (Especially the ConseQuencer if you’re looking for a sequencer that’s has a lot of different functionality built right in.) thanks for taking the time to read my review, and thank you Ruben for blessing me with such amazing modules 💕🙏🏻🙌🏻

Amazing. It’s better than I thought it would be and I thought it would be great. Sounds great, fun, smart design. I love this company