This is a great pickup - it functions exactly as advertised. It fills a tangible void in the acoustic bass transducer market. In the past, I have used a Revolution Solo (bridge-wing mounted) piezo, a Fishman Full Circle piezo (housed in a bridge adjuster), and a Schaller Magnetic pickup (attached to the end of the fingerboard). All of them worked well, offering various strengths and weaknesses. For non-arco play, the Krivo Humbucking Magnetic pickup is definitely my favorite. The main thing with this pickup is that it bridges the gap between the Schaller, which has tons of sustain and a very bright tone, and the piezos, which have better (shorter) sustain characteristics, but can be incredibly tough to EQ effectively and often lack volume when soloing in the upper register. What I mean specifically is that the Krivo is just GREAT in the upper midrange. The upper midrange of the Schaller is reminiscent of the bridge pickup of a Fender Jazz bass - its great for soloing and offers tons of (sometimes unwanted) sustain. The upper midrange characteristics of the piezos Ive tried are not useful at higher volumes - there is too much piezo honk and excessive thunk, especially on the A string. But attenuating these frequencies sucks the life out of my tone, and just makes it difficult to distinguish pitch clearly. Furthermore, there is a tendency to lose presence in the upper registers, making it tough for higher notes to cut through as intended. For me, its hard to play my best when for all these reasons, it just doesnt sound right. If this is a problem for you, the Krivo may very well be your best solution. With the Krivo, I find that I can either boost the upper midrange for enhanced clarity and richness, OR decrease the bass frequencies, thus unmasking the rich upper midrange tones WITHOUT THE PIEZO THUNK. The way this pickup sounds, I dont think Ill be blending it with a piezo either - that would just re-introduce the negative upper midrange issues inherent with piezos. The description of the proprietary microphonics really is accurate - the Krivo is not like other magnetic pickups. I cant fully express in words how great this is - but somehow natural sustain characteristics are maintained, and it makes the resulting amplified signal woody and huge, just as advertised. The Krivo does NOT simply make your acoustic bass sound like a giant P-bass. I recently played a concert where I played both my acoustic bass with the Krivo AND my 50s Fender Precision bass. After the show, I specifically asked audience members about my tone and verified that the instruments did NOT sound the same, despite both having humbucking magnetic pickups. The Krivo is a great addition to my sonic toolbox. What I will likely do in the future is use the Fishman Full Circle for arco, and for those quiet gigs where I just need a little boost for sound reinforcement. But when Im relying on my amplified signal to carry the day, there is no question that the Krivo Magnetic Humbucking pickup is the right tool for the job, and I will certainly use it. The tonal compromise/volume ratio is the best I have found to date. I cannot recommend this pickup highly enough. I understand that older designs of this pickup had some issues, but the newer incarnation that I own is stellar. I never want to be without one again. If you struggle with the upper mid-range and soloing/upper register volume issues Ive described here, this pickup is a welcome solution. It is WELL WORTH the asking price in terms of ease of use, conceptual design, and construction. GREAT PRODUCT.