Here's what Cherry MX Brown sounds like on a plated mounted keyboard. Keys used are PBT with O-ring dampeners.

Cherry MX Brown PBT key + O-ring Plate mounted

Here's what a Cherry MX Blue sounds like on a plate mounted keyboard. Keys used are Original Cherry Corp keys with O-ring dampeners.

Cherry MX Blue Cherry Key + O-ring Plate mounted

Here's what a Cherry MX Blue sounds like on a PCB mounted keyboard. Keys used are ABS.

Cherry MX Blue ABS keys PCB mounted

Here's what is sounds like with a plate mounted numpad. Keys used are original Cherry Corp keys which are ABS plastic with O-ring.

Cherry MX Brown Cherry Corp Key + O-ring Plate mounted

Here's what a Cherry MX with an ergo-clear mod sounds like on a plate mounted keyboard. Keys used are PBT with O-ring dampeners on a plate mounted keyboard. Also each switches here are lubed.
Note: Ergo-clears are made by using springs from MX Brown, Red or Blue with MX Clear stems.

Cherry MX Ergo-Clear mod + O-ring Plate mounted

Here's what a Cherry MX Red sounds like on a PCB mounted board. Keys used are PBT with O-ring dampeners.

Cherry MX Red PCB PBT key + O-ring

Just like what the title says, this is what the IBM Model M sounds like.

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