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  1. Modding Boost Switch on Bugera V22
  2. 65 Blackface Fender Showman PPIMV
  3. Peavey Valve King 112 Dynamics/Attack/Gain fuzz MOD
  4. Final tweaking of a 1959SLP Re-issue..
  5. JTM60/JCM600 important MODS
  6. Adding a choke to Sovtek Mig 60
  7. I wish I had one of these years ago - '71 Traynor YBA-1 gets Plexi modded ** CLIP **
  8. Peavey Triumph 60 Hum
  9. Fender Frontman Mod.
  10. Removing power valves to reduce output
  11. Fender Reverb Mods
  12. Vox DA5 lineout modification - speaker bypass
  13. Princeton 112 Plus - 50k 15A Volume Pot Mod - Part Number And Source Needed, Please
  14. Possible to add NFB to this schematic?
  15. lower wattage in 5E7A tweed pro?
  16. Peavey Classic 50 Blue Guitar Mods
  17. I think it's attenuater time
  18. Pushing V2 harder within older fenders. Pre-amp clipping mod?
  19. Bassman AA568 unused triode applications
  20. Super Reverb '65 RI - Changing Output Transformer to Match Speaker Load
  21. Log/ Lin Bass Pot (DlxRev).
  22. EL34 in a Champ?
  23. Blackstar Artisan 100 circuit PPIMV and FX Loop Mods
  24. 6150+ Mods and a real engineer guitarist!
  25. Adding Filament Transformer to Sovtek Mig-50. How to place it?
  26. Thank you Valvewizard - Ground, hum blocking
  27. Replacement speakers poll
  28. Bias points
  29. 5150 bias mod
  30. Fender Pro Jr More Bass
  31. Trying New Speakers/replacements
  32. Marshall Amp increase Bass/low-mid response
  33. Can y'all help me with a minor mod to a Peavey Rage 158?
  34. Relay wiring for Vox Night Train mod
  35. Adding additional input output to Line6 spider ii amp
  36. Suggestion for moderator - let's spell "Tweeks" correctly!
  37. Looking for more gain mod schematic jcm800 2210
  38. Negative feedback loop mod for Pro Reverb
  39. Using Combo amp Speaker as Cab
  40. Marshall JVM
  41. Are SoZo blue caps the same as Fender blue caps?
  42. Line out help please
  43. I want to reduce the gain in my Peavey Rage 158.
  44. help with some peavey XXX mods
  45. Simplest way to turn a combo amp into both a head and a cab as well?
  46. Amp Mod for some More Gain?
  47. Bogen PA head for guitar? Help with pentode preamp stages.
  48. Another JTM60 1x12 thread/question... (haven't seen this one)
  49. Fender Blues Jnr Mk3 Mod
  50. What's this JCM800 mod do?
  51. What's this JCM800 mod do?
  52. Supro Inspired VVR Question
  53. MASSIVE improvement to Mesa Boogie SOB mod - How to add a real presence control
  54. Adding tube spring reverb to a Mesa Boogie SOB
  55. 5V4 instead of 5Y3 ?
  56. Bypass Digital Board in Super Champ XD (& possibly others)
  57. Epiphone valve standard to increase the treble
  58. Different Speaker Outputs On Marshall DSL 40C
  59. Help needed to upgrade Capacitors in a Marshall DSL 40C
  60. coupling cap to block some bass?
  61. Hicks mender
  62. 2015 VOX Ac30c2 service manual
  63. Drop preamp voltage
  64. Fun new zener tweak!
  65. Convert 5F6A Bassman into 5F8A Twin
  66. Blues Jr, any mods or advice available to convert tube mount pcb to hard wired?
  67. Newest Peavey Classic 30 - Blue Guitar Mods?
  68. Cathode bypass gain boost questions
  69. converting 6sc7 amp to use 6sl7
  70. 6CA7 tubes something different in the place of EL34 ??
  71. Remove ground lift network? JCM900 dual reverb
  72. Gallien Krueger MB150S-III adding Boost circuit ala GK MB150E-III
  73. JCM900 4500 Mod: C27 Jumper or...
  74. cathodyne/LTP switch (for small P-P amp)
  75. Replacing my tone control with an Orange-style shape control
  76. Project! Convert push/pull 'boost pot' to a footswitchable jack?
  77. Fender Twin bias dilema
  78. Fender Ultralinear - KT66, 77 or KT88?
  79. Improved circuit for power tube tremolo in a fixed-bias amp
  80. Bias test points for PCB amp
  81. Fender Frontman 65R volume mod
  82. Peavey Classic VTX 65 watt combo question for Enzo
  83. Eyelet boarding a reissue amp (Fender)
  84. Which switch for high voltage switching?
  85. Carvin Belair - moding one channel
  86. Sound differences from different dual op amps in SS amps
  87. De-biasing a Peavey Classic VT (6L6 output stage)
  88. Tonestack help
  89. add an attenuator to an existing tweeter?
  90. mesa mk IV bias
  91. Conversion to acoustic amp
  92. Taming Fender Blues Deluxe Abrupt Volume Control
  93. Switchable VTM 60/120
  94. SF Twin reverb Ultra linear transformer Blackfacing
  95. Age Old Problem of TOOO Bright Super Reverb
  96. Deeper voicing on EVH5150iii
  97. Different types of power resistors
  98. What cap value for this idea?
  99. Mesa Nomad 55 Reduce the gain
  100. Vox Escort Mains/Battery amp power upgrade?
  101. Possible wrong installation of diodes in place of a 6X4
  102. Taming a Gibson tone stack
  103. "Tighter" Bass on a Tone King.
  104. Peavey xxx upgrades
  105. Cable runs and effect on tone
  106. Help with mod to Crate FW65 Combo
  107. Mesa .50cal EL84 version bias pot mod
  108. Switch ratings for mods with high voltage
  109. Musicman 75 head 2100EX too much overdrive
  110. Marshall DSL mod
  111. Any ideas for a temperature controlled fan for Bass amp
  112. Traynor YBA-3 dummy load to use 8 ohm cabinet?
  113. Slitting speaker cone or knitting needle ? Kinks content
  114. Vox lead escort 50 - integrating valve stage
  115. LTPI on a 6G2?
  116. Adding a footswitch to a Blackstar HT-1
  117. Fender Deluxe 112 Plus Too LOUD
  118. JCM 2000 Marshall TSL 100 mod to DSL 100 Specs
  119. Built-in solid state reverb circuit for tube amp homebrew...
  120. Reduce treble in Fender Frontman 212r clean channel with circuit mod
  121. Silverfacing a Deluxe Reverb
  122. Crate Vintage Club 30 /50 Remove V1 from the dirt channel to reduce gain
  123. ROLAND BOLT 30- 60 cycle hum...
  124. Fender Bassman AA864 variant - mods
  125. Peavey 6505+ 112 mod for channel balance
  126. Peavey Valveking Modifications
  127. tightening up BF Princeton reverb ?
  128. Best way to increase bass response...
  129. E-Wave DG2-30RH head Clean channel too bright
  130. ENGL E320 clean vol mod
  131. Trem and Bias
  132. marshall 1987x hiss reduction possible?
  133. Slope resistor and cap changes when changing a CF side to a 12ay7/12au7
  134. I wish to modify the tone stack in my Ashdown Mag 300 head.
  135. Using 12AT7 instead of 12AX7
  136. Subbing 12AU7 for 12AX7
  137. Any thoughts on how to "soften" attack on a Fender Bassman ?
  138. Fender Blues Junior excessive treble
  139. Looking for less low-cut in Randall RVC (like RD5C)
  140. Marshall JCM 900 mod
  141. Modding reverb
  142. Marshall Split channel again (some interesting information)
  143. Changing rectifier in a Ceriatone 5f6A Bassman
  144. guitar amp ->PA =cabulator
  145. Optocoupler in Fender tremolo
  146. Bugera 1960 infinium Schematic
  147. Epiphone Valve Junior OT upgrade -- help please???
  148. Hall Amplification VVR3 in Selmer Treble & Bass 50 Mk3
  149. modifying the Fender Greta line out
  150. Wanna help with basic mods...
  151. B+ voltage drop via Zener/MOSFET question
  152. Minimum output impedance for Marshall Lead 12.
  153. Hammond drawbars - guitar
  154. Peavey Bravo modifications
  155. Hot Rod Deville upgrade
  156. Twin reverb new speakers
  157. 65 Princeton reverb reissue Power transformer pn# 75165 Where can I get one ??
  158. Converting a PCB Champion 600 to a handwired 5F1
  159. Magnatone M13 - Easy Gain Boost
  160. Marshall DSL 100 - Mod to Switchable (50/100 watts)
  161. Fender Hot Rod Deluxe volume pot replacement
  162. Peavey Classic 50 Blue Mods
  163. 12AU7 failed in Orange AD30
  164. Crate gxt-100 is now a BENGL two more related mods needed
  165. Line-In to Active EQ of Fender Super Twin?
  166. Peavey Bandit 65 mods, anyone have any good mods?
  167. Best SGRs?
  168. Fender Greta Tone Control Mod for Music Playing Purposes
  169. Switchable Cathode Bypass Cap help
  170. Adding another tube to a Crate GXT100
  171. 6V6 bias question
  172. Marshall JCM800 4210 Channel Switcher - modification - advice sought.
  173. My amp needs to be louder, said the novice
  174. Marshall Valvestate - Adding Cooling Fan?
  175. Help with Mesa mark V CH2 mod
  176. JCA22H too bright
  177. Crate Gxt-100 looking for any mods
  178. The beauty of a decade box: ab763 tweaks
  179. non-presence 12ax7 phase inverter
  180. bugera 333xl-212 tone stack mod + more
  181. Silverface to Blackface
  182. Rivera S120 Mods - Please Help!
  183. Orange tiny Terror fx loop mod ?
  184. Help on DIY F2B with mods
  185. Changing Plate resistor question.
  186. Compilation of BF Reverb Fender Mods
  187. Guild Thunderbass 50Watt power supply issues
  188. Dual independent bias for a Windsor
  189. Amp Maker SE5 extra gain stage
  190. large PI tail resistor
  191. Bucking Transformer Built In to Chassis
  192. Univox U45b Tremolo
  193. Jcm 2210 mod help
  194. VHT Special 6 Ultra Mods
  195. Mod/Tweak VHT Special 6 Combo
  196. CRATE VC-3112 4xEL84 to 2xEL84 mod?
  197. "Fender" remote reverb control Badabing ka-pow!
  198. A couple questions about Peavey Butcher mods (should also apply to VTM)
  199. 5F1 Champ Mods - component ratings?
  200. 68 Princeton Reverb Bias Mod Question
  201. Moving clean ch. Tonestack on a 2210. Good idea?
  202. Can I add a Piezo tweeter to Peavey KB100?
  203. L-pad question
  204. Blackstar HT-1 - Add reverb?
  205. Useful Matchless Cluman mods?
  206. Line 100v amp conversion ?
  207. Add choke to blues junior (mexico)
  208. Music Man RD50 112 6l6 to 6v6
  209. LOW Gain !
  210. Looking for Bright options...
  211. DSL 401 mods
  212. prosonic combo weak reverb
  213. Marshall AVT50 cd input too loud
  214. Princeton 112 Plus - Shutdown MOD
  215. Fender Bassman output waveform oscillations
  216. PPIMV in SF Twin 135
  217. Uberschall channel balance
  218. Modifying Princeton 112 plus - Make Dirty Channel Versatile Clean Channel
  219. Fender princeton 112 solid state too loud!!
  220. Converting AA371 Basssman to best sounding circuit for guitar- which one ?
  221. Bugera v22 mod questions from a beginner
  222. Mustang III
  223. Connect a combo amp to a 4x12 cab.. Can it be done?
  224. need to add an Fx loop to valve amp ?
  225. Mesa boogie Nomad 100 new speaker reqd
  226. Marshall 1987X. customer says too loud
  227. Help me please
  228. Anyone know where to get the Fender silverface push/pull master volume pots?
  229. What Have I Done??? Orange Rocker 30 OT Swap
  230. Adding Midrange control to this tone circuit
  231. Effects loop wont work ?????
  232. I know, Valvestate 150 mod to make clean channel worth using?
  233. FX Loop problems
  234. Univox U200B
  235. El 84 fixed bias amp & Paul Ruby zener mod.
  236. Fender Blues jnr Too much treble
  237. Switching jack needed?
  238. Marshall JCM 800 2204 FX loop advice
  239. Question about gain staging
  240. tube saving power up tweaks?
  241. Mark Moyer mods to "Custom" Vibrolux Reverb
  242. Adding a choke to Ampeg V-4 power supply?
  243. Using Kalamazoo Model One as a preamp.
  244. Older Traynor YCV40 Master Mod.....again
  245. triode/pentode high/low power switch
  246. Peavey Classic 30 Cathode Bias / Half wattage mod
  247. BF Fender VibroVerb and Deluxe Reverb double note intermod at 15 Fret
  248. Lowering the Voltage on Traynor YBA-1
  249. 1996 Marshall 1959SLP Reissue
  250. Volume pots with power switches