So Maluvia says: >>I built some D/As out of a Crystal 24-bit evaluation board that blew the >>socks off an equivalent Apogee -- with a good clean power supply and >>clock. For about $200 US! > > Wow - that's really encouraging! > (BTW, where does one come by something like a Crystal evaluation board?) If you can convince a Crystal Semiconductor wholesaler that they should sell an engineering eval. unit to you, then that's where. I don't know who the industrial distributors might be for your region, though. You can try this for other companies as well. >>For A/D, I found that a 20-bit Burr-Brown chip >>*sounded* better than the Apogees at 44.1/48k and 24-bit, though most of >>that was still the input filtering. Caveat: yes -- that did include a careful and good word-clock. I agree with all comments about jitter _at the convertor_ I've seen so far; but most decent convertors won't mangle an external clock, and you can add a spendy stable clock later if you like -- just add next year's tax-refund as well! Cheers, Phil M -- Dept. of Mathematics, 342 Machray Hall U. of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2 Office: 446 Machray Hall, 204-474-6470 http://www.rephil.org/ phil at rephil dot org
