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