Hi, just wondering if anyone has had experience with this unit before?

http://www.ebay.com.au/itm/SONY-TA-D...wAAOSwT5tWM8JH

http://www.thevintageknob.org/sony-TA-D900.html

I am considering getting one for my 4343b's (not the actual one in auction the link). Initially for biamping and eventually for a fully active system.

Some considerations I'd like feedback on:

- Slope is 24 db
- Crossover points available compared to what is spec'd for the 4343b (in brackets)
280Hz(vs 300Hz)
1.25khz(vs 1.25khz)
10Khz (vs 9.5Khz)

Do we think the differences in crossover points for the Low and UHF would be an issue? Do we think being locked into the 24db slope could be an issue?

I've now tried three different crossovers:

JBL M553 (i think) - It was an old unit and was probably the worst of the three tried.
Behringer Super Pro X - better than the JBL
Ashly XR2001 - The best of the bunch for sure. Lesson: X overs make a big difference, so I'm interested in what difference a really high end Xover may provide.

Other units under consideration:
Accuphase f-25 (again fixed crossover points, but can choose slope, 4 way possible)
First Watt B1 (2way, would need to cascade for 4 way, but can choose any xover point, not sure about slope)
Marchand (custom slopes and x over points can be chosen)
any other recommendations welcome.

Thanks for any feedback.