From what I know of OSA and what I know of DAV, those two items are worlds apart. OSA is more of a colored product along the vein of API/Neve Clones/etc...DAV is not colored..In terms of a clean,detailed preamp with a rich, euphonic character...nothing in my experience with DACS, GML, Grace, Millennia, Apogee or several others has come close to the BG-1. Easily my best purchase ever. I thought the millennia was the heat until I was turned on to DAV by another devotee of their products. They are must haves, IMHO. I needed 16 channels of no compromise preamps .Thank God DAV came along because 16 channels of millennia would have been hell on the bank account

. I find that with the DAV covering the majority of the preamplification, and supplementing the DAV channels with 4 additional channels of Pendulum MDP-1(a tube pre...but not with overbearing color like some...very subtle rich warm blanket sound)..my results have been stellar. My clients have never been happier. I do all classical music, but it is nice to see some rock guys pick up the DAV too. It is multi-faceted .Congrats on the purchase!
Ive heard very mixed reviews of OSA...shoddy build work stories abound on GS. Theres some rather ugly pictures some of the bad solder jobs there too...
Nathan Eldred fluffs them a lot but then again, he is a dealer of their products.so fwiw.
BG 1 and 2 use the same circuit but 2 has extra switches for phantom and
phase.
BG No 4 & 6 use the same circuit but no. 4 has filters and rotary switches.
BG No 1 costs 700
BG No 2 costs 1450
BG No 3 costs 2100
BG No's 4 & 5 cost 1700 each
BG No 6 costs 799
BG-2 has 66 db of gain. BG-1 has 59. BG1 can be modded to have 66.
All prices in U.S dollars, prices include shipping, but not local taxes[if any]the easiest and cheapest way to pay is with paypal
their account is
mick@davelectronics.com
or you could send a dollar cheque
Due to high demand shipping can be between 14 - 21 days after payment is