Obviously not in the same league as the above bespoke capacitors, the Vishay Roederstein MKP1837 polypropylene metallized film caps, spanning .01 -.10 uf in 5mm lead pitch. with up to 160 Vdc ratings are really quite spiffy. Perfect for bypassing a 5mm pitch MKT polyester line level input or crossover cap. Desolder the larger MKT, insert the MKP1837 in the through holes and solder the short leads on the MKT to the MKP leads on the bottom of the board. A substantial improvement for a buck, and where there is no room for a larger 'la de dah' cap, sometimes the only reasonable recourse.