Blue Bottle, condenser studio mic The ultimate in hand-built craftsmanship, Class A discrete amplifier circuit with hand-selected EF86 pentode vacuum tube in triode mode, Mic system - allows for various capsules to be swapped "on the fly" for maximum versatility, Integrated capsule shockmounting, Hand tuned and tested, Custom-wound output transformer, Includes B6 capsule, 9610 Tube Power Supply, Champagne tube mic cable, and ATA flight case