Mine is the green label mij version. I opened it up and noticed that it has some highly coveted chips: mn3207 delay chip, mn3101 clock driver and a tc022 op-amp chip. I am not a big flanger guy but I really love what this pedal can do. It's a bit more metallic than other flangers but I was looking for that sound. The metallic sound is definitely organic sounding and completely analog on this unit. I run this through a vintage 1967 Ampeg Gemini II G15 and would like to point out that the equipment you run this or any pedal through can make all the difference when reviewing a pedal. With my amp, any pedal I run through it will usually perform at it's optimum level. So my review maybe different than someone who is running it through a Line6 or a peavey or what not. Vintage tube amps just seem to handle effects better than newer amps. I have to say that I never had a pedal sound bad through my Ampeg. Something I can't say about my Blackstar HT40 which is a great "newer" tube amp but hit or miss with many pedals. Nevertheless, this Boss unit is a great buy given what you can get them for. I run mine after my drives and eq. Before my chorus and delay pedals. I consider myself a bit of a vintage snob but I would buy this again over any newer flangers out there going for at least double the price.
No problems. As reliable as any Japanese mass produced product.
Real nice flanger. I won't be getting rid of it anytime soon. I don't have any issues with tone sucking or noise. I'm not a big fan of boss effects but they have produced some quality effects through the years. The BF-2 is one of them. Quality components inside(at least with the mij labels) and great analog tone. A very versatile flange that has a lot of tones inside of it. Pick one up before they go up in price to some ridiculous level.