Bogner Amplification 20th Anniversary Shiva Head with KT88scomes with a pair of KT88? s and the amp is rated at 90 watts. The clean channel has an entire new boost circuit. Unlike the tone stack bypass boost on the other Shiva model this boost has a separate gain stage which brings this channel into Plexi territory when boost is engaged. The tone controls stay in the circuit and affect the sound. The gain channel features higher gain and a slightly more refined type of gain. Two push button switches have been