Artec MSP50-OSJ Pickup a buco sonoro singolo in ceramica con jack OSJ da 7,5 k per chitarra acustica.

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This is the 1st soundhole pickup I've evert tried (in the 1st acoustic I've ever owned), so NOT an expert opinion... I just know that this pickup, out of the box (no adjustments/modifications) into a $160 Epiphone Jim Dandy (concert size, also unmodified) acoustic yielded a gorgeous and HOT slide guitar tone. That was playing into a Victoria Double Deluxe (basically a higher watt version of the late 50's Fender 5E3 Deluxe circuit). The amp was modified to have an on-board 6G15 style tube reverb, which really improved the tone as well. I don't know what I'd do to improve it further - it's really good as it stands. Maybe a tiny bit of delay (?) I tried playing it into a 1964 Ampeg Gemini II, which is BONE clean, and it was much less exciting - though still not too bad. Summary: this cheap pickup, into a cheap acoustic, into a really great amp made a tone I am literally in love with. There wasn't any runaway feedback at all though, and that was with the sound hole completely uncovered and no ground to the strings. So it it would likely hold up just fine into a Fender Hot Rod, or a Line 6 modeling type, or whatever you have going. The feedback tolerance could for sure hold up to the grit needed to get the 50's Chicago thing. I really liked using a Dyna Comp. Compressor pedal followed by an MXR EQ pedal for that going into that '64 Ampeg. I have their $20 AlNiCo V Humbucker coming in 2 days. AWESOME how easy it is to swap these in/out too. (Pl just remember, I never ever said I could actually play like Elmore James. Also it's really late, so there's not as loud amp sound as I'd've liked to've had. Hopefully helps though)

Sounds good, cut the plastic to make it fit my parlor size so cant say regarding fit in a normal sized acoustic. pole pieces are finicky but adjustable and removing the B strings magnet and slamming the high E helped me because the unwound strings were way too loud (not an issue w/ the pickup, just setup). If you dont care about replicating the acoustic sound this is great.

Again the data on the Amazon site is incorrect. It is listed that the pickup fits a sound hole 3.5 inches and up however the pick up measures over 4 inches and is impossible to fit in a sound hole even 3.75 inches. Very dissapointed.