The Lakland 4-94 and Lakland Skyline 44-02 used Bartolini MM42K3 and 9K-S3 Pickups and the NTMB-L Preamp. These models have been replaced by the MM42CBJD3 and 9CBJD-S3 and NTMB+FL Preamp.
The Lakland 55-94 initially used Bartolini MM52K3 and 59K-S3 Pickups and the NTMB-L Preamp up until June 1997. Later 55-94 models and Lakland Skyline 55-02 used DL52K3 and 59K-LN3 with the NTMB-L. These models have been replaced by the DL52CBJD3 and 9CBJD-LN3 and NTMB+FL Preamp.
Lakland Skyline 44-01 and 55-01 models use the Bill Bartolini licensed MK-1 pickups and preamp. These can be upgraded for better tone with the US made MK4CBC-B/T set for the 44-01 or the MK5CBC-B/T set for the 55-01. Both can be upgraded to use the NTMB+F preamp