30% off coupon on Monolith AMT, M1070(C) and M1570C Planars

A coupon promotion until 11//16/23 at the Monoprice website features an extra 30% off on orders of $50+ using coupon code EXTRA30 on select Monoprice audio products, headlined by some of their headphones:

+ AMT headphone drops to $700

+ Planars M1070 open-back and M1070C closed-back drop to $280

+ Planar M1570C closed-back drops to $420

+ a couple of other consumer headphones, various speakers, audio cables, stands, and speaker wire are among the other eligible items