Apparently. I sent the GM a temperate, reasonable e-mail describing the absolutely muddy sound of a brand-new Spirocore E, right out of a sealed package. Simply stated, the string is $31.82 (plus shipping) worth of useless metal. No response after several days. But from their web site, I have learned of owner Peter Infeld that "His philosophy of life and art, which he embraces fully with heart and soul, is the joy of holding a special vision." No sign yet that that "special vision" includes standing by his product.