Find the lowest price for:       All ProductsGuitar Amplifiers     4.0 (1)   Add a review THD BiValve-30 30W Class A Amplifier Head   THD BiValve30 bring all players of every style of music the absolute best in tonal diversity.With the ability to change out every tube in the signal path to suit your liking, the BiValve30 is so versatile, every passionate guitarist needs one of ... Have a question? Ask the Experts! Set Price Alert Compare Prices Product Spec Member Reviews Recommend to Friends Searched THD BiValve-30 30W Class A Amplifier Head in 150 stores, 4 results found Image Description   Store   Price THD BiValve30 Guitar Amplifier Head Non-Factory Sealed If this item doesn't belong here, click Remove and help us keep our results accurate.   American Musical   1 Store Reviews   $1079 Go to Store THD Electronics BIV30C BiValve-30 Cage Head, Black, 120V If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $1525 Go to Store THD Electronics BIV30C BiValve-30 Cage Head, Black, 120V If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $1525 Go to Store THD BiValve-30 30W Class A Amplifier Head If this item doesn't belong here, click Remove and help us keep our results accurate.   Musicians Friend   5 Store Reviews   $1529 Go to Store Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Tube Amp Heads Guitar Amplifiers Other Guitar Amplifiers internal use: spec82 spec420 spec571