More 909 questions.... :-)

[Trevor Page]

Hi,

Once again many thanks to all of you who gave me advice regarding some
devices used in the TR909 circuitry. There's kust one or two more things
that I am stuck on :

First of all, there's a few 2SD1469's in some of the circuits which do not
appear to be obtainable. I am aware that some of you on the list have some
Roland parts. Anyone know where I can get a few of these? However, if
possible I would like to use a modern substitute. Is there a suitable
equivalent for this device? Is there anything special about it - high gain /
low noise?

Also, the hand clap circuit uses an AN6912, a quad opamp chip. Again is
there anything special about this part, or again could I use a TL074?

Regards, Trev