Is there a difference between Linn LP12 lingo 1 vs lingo 2 other than the case?

Both zavato and daveyf are correct. Here is a bit more detail. The Lingo 1 was introduced in 1990 and was modified for safer operation in 1995 around serial number 10000. The Lingo 2 was introduced in early 2001, serial number 614522 on, and was the same circuit as the Lingo 1 in a larger Linn LK chassis. In Fall 2001 the main circuit board was significantly reworked using SMD's, serial number 656968 on, which resulted in better sound quality. The Lingo 3 is the same updated board in the newer Linn AV chassis.