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  1. Anyone have the 80s Dumble Schematic
  2. should power tubes glow orange while playing the amp?
  3. Explanation of Self-Biasing/Cathode Biasing
  4. Mesa Studio .22 Rebuild?
  5. looking for nos mullard tubes
  6. Victoriette el84s to 6L6s
  7. Carr Mercury boost switch
  8. I dropped my amp....
  9. Heat Dissipation?
  10. Amp Kit
  11. Guitar POD digital distortion
  12. Who Knows a good Amp Tech in Los Angeles?
  13. Rebiasing a Marshall JTM 60
  14. How does Bogner get 80 watts out of a SHIVA?
  15. Bad Cat Effects Loop ?
  16. Fuchs headroom.
  17. Marshall 2203 bias balance help sought
  18. Nightmare on Marshall Street
  19. Variac help
  20. KT88's?
  21. Changing EL84 amp to 6V6 or ?
  22. capacitor question
  23. Removing tolex?
  24. Voltage help
  25. Noise!?@#$&*$
  26. pentode mode / triode mode? please explain
  27. Biasing EL84 Based Amps
  28. 18 Watt clone speaker suggestion
  29. 5Y3 in Maz Jr.
  30. Alen Old Flame Problem...
  31. Changing combo> head
  32. Help! My amp is sick..
  33. rectifier tube swap question
  34. What are some ways to tell if you have a Telefunken ECC83?
  35. Schematic for Duncan 60 watt
  36. problem with SOLO function on Mesa RectoVerb
  37. Bad Cat Hot Cat speaker replacement?
  38. Tube problem or not?? my amp is more broken.
  39. New (but used) amp problem, can I really have a bunch of bad tubes or is it the amp?
  40. Bassman AA864 vs. AB165 gain stage question
  41. Broken Amp (Busted Fuse?)
  42. Combo amp resonance noise
  43. Different Sovtek 6L6's
  44. making a cheap amp better
  45. Identification of a Potentiometer
  46. Proper way to retrofit 3-prong to BF Bandmaster.
  47. Amp Biasing: How to support the chassis?
  48. Blowing fuses
  49. Just picked up 10 nos mesa 12ax7's from the 80's
  50. 6L6 Recomendations
  51. Princeton Reverb Toubleshooting Help
  52. SLO 100 V1 tube
  53. Amp running without cab...
  54. Can I do this?
  55. For those who dig this stuff: my YGM-3 chassis, before & after
  56. Power transformer is Hot!
  57. Rectifiers question
  58. Capacitor type question - help please
  59. What Multimeter?
  60. Using 6V6's in place of 6L6's
  61. Help with Mesa F-30
  62. Marshall 2204 question?
  63. 5U4 question...
  64. getting new speakers. ohm question
  65. Traynor EU mods?
  66. Resistor question
  67. Power Tube Dampeners?
  68. Fender Bandmaster
  69. 1978 Princeton Reverb.
  70. Treble Trouble
  71. new power tubes/same ol' farting amp
  72. Can this harm an amp? (speaker-related)
  73. Pearl Tube Coolers
  74. Safety when working on an amp?
  75. HELP with tube change!
  76. How can I get power sag without using a tube rectifier?
  77. Loss of volume
  78. Ac Dc
  79. EL-84--Sovtek vs. J.J ??
  80. I have a good FX loop but Can't I skip it?
  81. How to...
  82. John Phillips, other amp experts... URGENT!!!!
  83. Blues Jr vs Pro Jr
  84. Bias drift or runaway Help needed!
  85. Effects Loop Problem
  86. fender bronco
  87. using US 9V power transformer in UK
  88. Problem with Aluminum chassis
  89. Need Help - Need to Revese the Phase in Effects Loop
  90. Amp Protection question
  91. HELP!!! - AC30RI Output Tube Socket Replacement Question
  92. GT Soul-O 45: What makes is "pedal friendly"?
  93. 69 Deluxe Reverb question
  94. custom poweramp - would this work?
  95. Where to buy the best/cheapest variac on the net?
  96. running without load?? help
  97. Dancing impedance reading from cab? Help needed!
  98. Phase Inverter
  99. What makes an amp sing?
  100. Diode In Bias Supply
  101. 1U blank rack chassis
  102. new custom poweramp idea!
  103. adjustable bias pot???
  104. Deluxe Mod?
  105. 6CA7 vs. el34
  106. TUT Vol. 3
  107. Does impedance always have to match?
  108. Ballance and bias for each output tube
  109. Amp Speaker Outputs: Which to use? Why?
  110. Pre-Amp tube suggestions?
  111. Feedback destroyers?
  112. Need Speaker Cable Suggestions...
  113. Speaker choice for 64 Bassman head combo cab?
  114. bias diode
  115. Would a bad tub effect the LED on the footswitch of my Two Rock?
  116. Where is the best place to buy tubes?
  117. Attenuators
  118. Dropped my power cord in calcium chloride, should I toss it?
  119. 1972 Ampeg Svt Head
  120. Bias setting question
  121. Does lower wattage speaker = faster breakup
  122. Mesa Studio .22 Tech help needed...
  123. DIY Attenuator
  124. motorboating JCM800...
  125. Preamp tube layout for VHT 50 CL?
  126. Amp gurus! Intermittent crackling question..
  127. Lower mains voltage: What to do??
  128. "Dummy Load" Question???
  129. anybody use 2 1x12 cabs in series/parallel?
  130. working safely on an amp... discharging caps and such
  131. GIve me your input on different el34's
  132. Help ID which amps are Class A
  133. Tubes for Mesa's
  134. Impact of a 6.6k primary
  135. Technical tube question...
  136. Sound "disappeared"
  137. Standby Switch Usage
  138. Mesa Lonestar
  139. 5U4GB rectifier tube
  140. Speaker Area and Volume
  141. Speaker cabinet question
  142. Tube duties in a Maverick
  143. 3 prong install, problem now.... please help if possible.
  144. tremoverb power reduction question..
  145. My Amp plays all by itself! No kidding
  146. Feedback/oscillation problem... where do I look?
  147. Question for cabinet/amp builders
  148. Preamp tube with lowest mids-to-gain ratio
  149. Amp sound loss
  150. Sad about my Carman Ghia
  151. transformer for a 12AX7+50L6+35Z5 amp?
  152. .015uf good caps @least600V -where?
  153. EV Speakers
  154. I see dead people - Working on My Amp
  155. Torres overhaul kits, any good?
  156. fender tube replacements
  157. Bad Phase Inverter
  158. Balanced PI tube
  159. Location of Bias Pot on Fender Super Reverb?
  160. Koch Reverb Puzzle
  161. Canadian parts sources for DIY amp/cab builders?
  162. 66 Bandmaster Ohms?
  163. Train Wreck Mod?? Or other master volume mods??
  164. Hoffman Board Kit
  165. Help me bias my Two Rock Ruby...
  166. Before and After pics of my Fender amp - shellac'n/relic'n.
  167. EVs- much louder than the average speaker?
  168. Ei EL84s in a Matchless???
  169. Shallow Vibrato on '70 SFDR
  170. tropical fish caps
  171. Fargen Mini Plex + Mighty Plex gain & tone mods
  172. 6V6s in a Twin Reverb/Dual Showman ????
  173. Any one done the Tim C vibro-king mod?..need help
  174. Problems with my cab. Help please!
  175. Ohm help please
  176. Can you tell me about these tubes?
  177. Last Vibro King question..I promise
  178. how to tell when power tubes need replacing?
  179. anybody ever convert a BF/SF twin to tweed specs?
  180. PPIMV's and effects loops...
  181. no output from power amp?
  182. rectifier questions
  183. Re-biasing my Cornford Amp
  184. pot values
  185. Replacing the Vibrato Bug in a 64 Deluxe??
  186. SS rectifier & 6L6's in a 64 Deluxe
  187. Are there "bias test point" kits?
  188. Re-wiring old PA amps for guitar
  189. loud hum in amp--like ground hum(?)
  190. safest place to buy NOS or USED TUBES?
  191. Blues..........
  192. problem w/ 67' Deluxe Reverb
  193. Class A Deluxe ?
  194. Understanding EL84 "current" ratings?
  195. Fender blues Jr
  196. Setting the bias on an Alessandro Working Dog amp?
  197. Two filter caps 500% off spec!! WTF?
  198. Will this hurt my amp?
  199. Can I use a 5U4GB in a tweed Bassman
  200. Recap a BF Super Reverb?
  201. More speakers, less speakers
  202. Is switching between 6L6 and EL34 just matter of re-biasing?
  203. Stop, hey, what's that (60 Hz) sound?
  204. Head Shell vendors?
  205. AB868 - Q re. cap on V3
  206. Tim C Vibroking Mod...Review
  207. Speaker Power Handling Question
  208. vintage tube experts,i have a question?
  209. Hot Deluxe Reverb
  210. Mismatched tubes=bad, right.....?
  211. The Amp Bias spreadsheet and more...
  212. Custom Chassis???
  213. speaker wattage & amp's power
  214. What tubes in my AC30?
  215. converting a guitar amp to a Hifi amp...
  216. 6C10 tubes for Fender Super Champ
  217. Biasing my Alessandro Working Dog w/ Weber Bias Rite
  218. Where to find EF86 ultra-linear schematics for inspiration?
  219. 5u4gb for 5u4g?
  220. Multiple amps again.
  221. Dating an SF Bassman head
  222. Fender Bassman RI Tube Question
  223. Help needed with a Victoria Champ Problem
  224. Great site for Mullard and Telefunken`s cheap
  225. Questions on using a speaker load to bias an amp...
  226. Bad readings using Weber bias rite kit. Help!
  227. Standby Switch
  228. ptp board or Mercury Magnetics OT for 59 Bassman RI
  229. marshall jcm 900 cab w/ 1972 50w head?
  230. Silvertone repairman?
  231. What tubes have the sickest gain?
  232. vox ac30 noise issue problems
  233. Hoffman 5F6A board for 59 Bassman RI
  234. Is there any way to compensate for the "drawbacks" of 6v6s?
  235. anybody have a schematic for a fender super 60
  236. GT "substitiube" rectifiers
  237. how much do you need to know to build an amp?
  238. Which amps can you bridge channels on?
  239. What Preamp Tubes to use
  240. HELP!!! My amp is messed up!!!
  241. 12AT7 vs 5751
  242. Just blew my Polytone...
  243. Power tubes don't light up, but preamp tubes DO!!
  244. Impedance matching
  245. Just Got My Weber Bias Rite ...
  246. Tonal effects of OT upgrade?
  247. 5AR4 in a tweed deluxe?
  248. No Standby and Tube Longevity
  249. Odd amp noise question
  250. Replacing Speaker Wire