Hi. I own the Osprey and they do have amazing bass. However, they require the full 200+ hours before the bass begins to really open up. Room placement and acoustics is also important. Although the Osprey are fairly efficient( I believe 88db ) I feel they need an amp with lots of current to sound their best, particularly for deep and powerful bass output. I initially had two integrated amps driving them and had mixed results with them. I first had the Plinius 8200 Mk 1 and the bass was excellent with lots of current,providing great depth of bass. However, the overall sound was a little too dark for my tastes and the high end was a wee bit rolled off for my 50 year old ears. I then experimented with a Simaudio Moon I-5 integrated and everything went into reverse,lots of high end( excellent cymbal reproductions) and not enough bass. I recently took a gamble and sold both integrateds( I want to mention that both integrateds are extremely musical and for me if I could combine the best features of each that would be the ultimate integrated) and decided to go back into separates. I just ordered an Odyssey Extreme stereo amp and Tempest preamp, so I'm hoping this will be my dream set-up. I would imagine that the Plinius 8200 Mk II might just be the right integrated amp( if you rule out tubes and hybrids) as the Mk II version has a better high end extension as well as a bigger power supply for even more current. The Plinius also needs a good power cord and the Osprey( being time and phase-aligned) like the very best speaker cables. I am currently experimenting with some Acoustic Zen Satori and Stealth Premier II cables. Anyway, good luck in your search and I hope you enjoy your Osprey.
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