MODULUS GUITARS manufactured the QUANTUM 4 SPi SWEETSPOT CUSTOM (MODEL BSQ4XL-SS-C) between 1994 and 1996

MODULUS GUITARS made the QUANTUM 4 SPi SWEETSPOT STANDARD (MODEL BSQ4XL-SS) between 1994 and 1995

MODULUS GUITARS made the QUANTUM 4 SWEETSPOT (MODEL Q4SS) between 1996 and 2003

MODULUS GUITARS produced the QUANTUM 5 SPi SWEETSPOT CUSTOM (MODEL BSQ5XL-SS-C) between 1994 and 1996

MODULUS GUITARS made the QUANTUM 5 SPi SWEETSPOT STANDARD (MODEL BSQ5XL-SS) between 1994 and 1995

MODULUS GUITARS manufactured the QUANTUM 5 SWEETSPOT (MODEL Q5SS) between 1996 and 2003

MODULUS GUITARS manufactured the QUANTUM 6 SPi SWEETSPOT CUSTOM (MODEL BSQ6XL-SS-C) between 1994 and 1996

The QUANTUM 6 SPi SWEETSPOT STANDARD (MODEL BSQ6XL-SS) was made between 1994 and 1996

The QUANTUM 6 SWEETSPOT (MODEL Q6SS) was made between 1996 and 2003

MODULUS GUITARS made the Quantum Wide 5 SweetSpot (Model QW5SS) between 1996 and 2003