MTD Kingston Bass Product Upgrade Recommendations - Upgrades are now available from MTD - http://www.mtdbass.com/
Kingston CRB4 String 8CBP with Passive Volume & Tone
Kingston CRB 5 String 58CBP with Passive Volume & Tone
Kingston Saratoga 4 String - b-axis J44J-L/S or 9CBJD-L3/S3 with Passive Volume, Volume, Tone
Kingston Saratoga5 String - b-axis J45J-L/LN-19 or 59CBJD-L3/LN3 with Passive Volume, Volume, Tone
Kingston Saratoga Deluxe 5 String - b-axis J45J-L/LN-19 or 59CBJD-L3/LN3 with HR-MT3
Kingston Artist4 String - MM4CBC with HR-2.5AP/918
Kingston Artist5 String - DL5CBC with HR-2.5AP/918
Kingston Heir4 String - MM4CBC and (9CBJD-S1 or b-axis J44J-S) with HR-5.2APMT/918
Kingston Heir5 String - DL5CBC and (59CBJD-LN1 or b-axis J45J-LN19) with HR-5.2APMT/918 (a 59CBJD-L1 or b-axis J45J-L19 may be used for a heavier neck voice)
Kingston Z 4 String - BC4CX-T(mtd) + BC4CX-B(mtd) with HR-5.2APMT/918
For a voice with more high mids and less treble, BC4CBC-T/B
For a vintage, single coil voice, Singularity Series BC4S-T/B
Kingston Z5 String - P25CX-T(mtd) + P25CX-B(mtd) with HR-5.2APMT/918
For a voice with more high mids and less treble, P25CBC-T/B
For a vintage, single coil voice, Singularity Series P25S-T/B
Kingston Z6 Srting - P46CX-T(mtd) + P46CX-B(mtd) with HR-5.2APMT/918
For a voice with more high mids and less treble, P46CBC-T/B
For a vintage, single coil voice, Singularity Series P46S-T/B
These instruments have custom Bartolini pickups installed from the factory
Kingston ZX5 string - P25CX-T(mtd) + P25CX-B(mtd) with HR-5.2APMT/918
Kingston Andrew Gouche5 String - 75P25MTJ-T + 75P25MTJ-B with HR-5.2APMT/918
Kingston Andrew Gouche6 String - 90P46MTJ-T + 90P46MTJ-B with HR-5.2APMT/918