Bit OT: replacement for 4741's

[Bernardduur]

Hi all,

A bit OT:
My amp uses a couple of 4741 (4x 471) IC's for the graphical EQ section. One of them is not working anymore and it is a pain to get those IC's here. Can I sub them with other IC's or is the quality / sound of these IC's so good I really need this ones?

I have the same question about the used 4558's but I can get them quite cheap here.

Thanks!