Make: Hughes & Kettner Model: Switchblade 100w Head Year: Not Sure Serial Number: 20166454 Info: Downloadable Manual: http://oldies.hughes-and-kettner.com/Switchblade_100_Head/Switchblade_BDA1_1_low.pdf Hughes & Kettner® has packed all the features guitarists have long been dreaming of into one amp – a bona fide all-tube design and the boundless versatility of amp modeling. For more than 20 years, Hughes &…