Where to get yellow, flat tubular caps?

[any]

Jaycar here sells them as "Audio crossover" caps (jaycar.com.au) and there very expensive
compared to the regular ones! There was no brand name on them though, just the value.

[Electric Warrior]

JT makes some flat types. No idea where to get those.
http://www.jt-capacitor.com.tw/mea.htm

[ubersam]

Cornell-Dubilier (Mallory) has a few different types: Polyester: MMA & MMP; Polypropylene: 936C, 941C, 943C, & 946C.

Xicon has the 23MA series.

[Electric Warrior]

does anybody have a mouser part number for the spragues?

[Pedal love]

Guts, the original ff had a capacitor like the one pictured below. I think the BYOC are axial wrap and fill capacitors.

[Electric Warrior]

nice, where can I get these?

edit: nevermind, just found them in your shop

[Pedal love]

I'm not supposed to say this here but I have these. Its a fact, but facts are weird things among friends.