Kirch's lone bass for this tour was a gift from Thiessen. She surprised Kirch for her 26th birthday by having Richie the Guitar Doctor—who only takes on clients by word-of-mouth reference and operates out of his Lower East Side Manhattan apartment—build this P-style bass that has replaced her longtime No.1, which was a semi-hollow Series 10 model. She prefers to use the thickest bass strings from Augustine because she plays with a pick and Kirch feels that gives her tone some added aggression and bite.