Hello All,

We have been doing some upgrades to some older boards and related
sound equipment of Japanese extraction that are chock full of op amps
in the in-line (SIP) configuration. As you may know, decent op amps in
the SIP configuration are mostly non-existent. I've heard about an
NJM2114, but have never seen one.

After a few conversations with some of your most illustrious posters,
it has become apparent we would have to make our own dip to sip
adapter.

We will be testing socketed dip to sips, as well as loaded dip to
sips, mostly with LT1469 duals. Also, SOIC to SIP with the IC
thermal-conductively attached to the copper back plane of the tiny
printed circuit board as a heat sink.

I have been unable to explain the sound difference between DIP and
SOIC op amps of the same type. (I think the DIP sounds better). The
leads to the actual chip are the same, or so I'm told, and my thoughts
are that the DIP case may be a better heat sink. Then again, the
thermal gunk under the SOIC may be damping vibration. I have seen
this on output transistors, but not on op amps. If any one has any
experience or thoughts in this area, it would be great to hear about
it.

If anybody is interested in picking up some of the previously
mentioned SIP adapters, let me know. We should have quite a few of
them.

Best regards, Lewis