I will be as short and concise as possible about this instrument. It is far from a perfect product. However, it is the best bass you can buy for this money. Unfortunately, it recently became more expensive. When I bought it, it was 110 euros less. But even so, the ratio of quality and options/price is unbeatable. I also own an Ibanez Bass that is more expensive than the M7 and I had to spend another 500 euros to at least match the performance of the M7. There are places where you can upgrade (passive tone pot, knobs) but only if it's a big problem for you. In the real world, this bass is perfect for all scenarios you can find yourself in (studio, live). The sound of the speakers is comparable to that of some high-end speakers (Nordstrand, EMG, Aguilar). The neck is stable, the Cordar lets you adjust it 3D. The keys are stable, the nut must not hang. Personally, I don't know why anyone would object. You have to spend at least 600 euros more to get something similar from the rest of the brands.
Edit: The neck it came with was warped from factory. I only discovered this after i took it to my techs. Thomann agreed to replace it and i am now waiting for it. What i have said about the sound remains true. I give it 2 stars in craftsmanship because of this neck issue. In the end its the factories fault. All indonesian made instruments are less quality. I will come back after i receive it and inspect it thoroughly.