Amp location on Meridian Sound System SD4

Hi , Have the meridian sound system in 2013 Landrover SD4. I'm looking to locate the audio amp to hopefully run an audio out to external subwoofer either at line level or speaker level. I see from a previous post that the "Alpine" sound system amp is in boot under trim. Wondering if the Amp for this system is also there? Also if anyone has any experience with these factory amps, are there any outputs labelled and are there any RCA outs spare. If not I can scotch lock to the existing Sub wires. Already have the power wiring installed. If the trim is difficult to get out, is there a way to remove the black casing over the existing sub speaker in the boot as could potentially scotch lock onto the speaker wires there to save hassle.
Any help very gratefully received.

Rob

RobCharles said:

Wondering if the Amp for this system is also there?

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It's likely to be in the same place, although that's just a guess.

RobCharles said:

Also if anyone has any experience with these factory amps, are there any outputs labelled and are there any RCA outs spare.

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I don't think you'll find anything helpful like RCA sockets. Most high spec audio systems use fibre optic cables these days.