All twelve strings are tuned down a whole step from Matched Reciprocal™, with correspondingly thicker gauges.

Melody
1. Bb
2. F down a 4th
3. C down a 4th
4. G down a 4th
5. D down a 4th
6. A down a 4th

Bass
7. Bb
8. F up a 5th
9. C up a 5th
10. G up a 5th (unison with 4th string)
11. D up a 5th
12. A up a 5th

• Matched Reciprocal™ 6+6
  
• 12-String Classic™ 6+6
  
• Matched Reciprocal™ with high bass 4th
  
• 12-String Classic™ with high bass 4th
  
• Dual Bass Reciprocal™
  
• Mirrored 4ths 6+6
  
• 12-String Classic™ 7+5