JFET question.

[alparent]

Is there such a thing as a dual or multiple JFET chips (like chips tha have multiple NPN transistors)?
That would simplify the build of effects that need JFET matching? No?

[composition4]

Heaps... just search google for matched jfet

http://www.datasheetcatalog.org/datasheet/vishay/70254.pdf is one

whether they'd have the specs you need for whatever circuit, you might have to look around

are you talking about matching for a phaser or something else?

[amptramp]

If you have something like a phaser where the FET's are grounded, a CD4007 has low-threshold FET's made on the same die.  Anderton has used the CD4007 as a variable FET in a number of his designs.  Just don't connect the Vcc and the upper FET's in the totem pole stages are shut off, leaving grounded n-channel MOSFET's with similar doping, channel sizes etc. so the characteristics are closely matched.