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  1. MASSIVE improvement to Mesa Boogie SOB mod - How to add a real presence control
  2. Adding tube spring reverb to a Mesa Boogie SOB
  3. 5V4 instead of 5Y3 ?
  4. Bypass Digital Board in Super Champ XD (& possibly others)
  5. Epiphone valve standard to increase the treble
  6. Different Speaker Outputs On Marshall DSL 40C
  7. Help needed to upgrade Capacitors in a Marshall DSL 40C
  8. coupling cap to block some bass?
  9. Hicks mender
  10. 2015 VOX Ac30c2 service manual
  11. Drop preamp voltage
  12. Fun new zener tweak!
  13. Convert 5F6A Bassman into 5F8A Twin
  14. Blues Jr, any mods or advice available to convert tube mount pcb to hard wired?
  15. Newest Peavey Classic 30 - Blue Guitar Mods?
  16. Cathode bypass gain boost questions
  17. converting 6sc7 amp to use 6sl7
  18. 6CA7 tubes something different in the place of EL34 ??
  19. Remove ground lift network? JCM900 dual reverb
  20. Gallien Krueger MB150S-III adding Boost circuit ala GK MB150E-III
  21. JCM900 4500 Mod: C27 Jumper or...
  22. cathodyne/LTP switch (for small P-P amp)
  23. Replacing my tone control with an Orange-style shape control
  24. Project! Convert push/pull 'boost pot' to a footswitchable jack?
  25. Fender Twin bias dilema
  26. Fender Ultralinear - KT66, 77 or KT88?
  27. Improved circuit for power tube tremolo in a fixed-bias amp
  28. Bias test points for PCB amp
  29. Fender Frontman 65R volume mod
  30. Peavey Classic VTX 65 watt combo question for Enzo
  31. Eyelet boarding a reissue amp (Fender)
  32. Which switch for high voltage switching?
  33. Carvin Belair - moding one channel
  34. Sound differences from different dual op amps in SS amps
  35. De-biasing a Peavey Classic VT (6L6 output stage)
  36. Tonestack help
  37. add an attenuator to an existing tweeter?
  38. mesa mk IV bias
  39. Conversion to acoustic amp
  40. Taming Fender Blues Deluxe Abrupt Volume Control
  41. Switchable VTM 60/120
  42. SF Twin reverb Ultra linear transformer Blackfacing
  43. Age Old Problem of TOOO Bright Super Reverb
  44. Deeper voicing on EVH5150iii
  45. Different types of power resistors
  46. What cap value for this idea?
  47. Mesa Nomad 55 Reduce the gain
  48. Vox Escort Mains/Battery amp power upgrade?
  49. Possible wrong installation of diodes in place of a 6X4
  50. Taming a Gibson tone stack
  51. "Tighter" Bass on a Tone King.
  52. Peavey xxx upgrades
  53. Cable runs and effect on tone
  54. Help with mod to Crate FW65 Combo
  55. Mesa .50cal EL84 version bias pot mod
  56. Switch ratings for mods with high voltage
  57. Musicman 75 head 2100EX too much overdrive
  58. Marshall DSL mod
  59. Any ideas for a temperature controlled fan for Bass amp
  60. Traynor YBA-3 dummy load to use 8 ohm cabinet?
  61. Slitting speaker cone or knitting needle ? Kinks content
  62. Vox lead escort 50 - integrating valve stage
  63. LTPI on a 6G2?
  64. Adding a footswitch to a Blackstar HT-1
  65. Fender Deluxe 112 Plus Too LOUD
  66. JCM 2000 Marshall TSL 100 mod to DSL 100 Specs
  67. Built-in solid state reverb circuit for tube amp homebrew...
  68. Reduce treble in Fender Frontman 212r clean channel with circuit mod
  69. Silverfacing a Deluxe Reverb
  70. Crate Vintage Club 30 /50 Remove V1 from the dirt channel to reduce gain
  71. ROLAND BOLT 30- 60 cycle hum...
  72. Fender Bassman AA864 variant - mods
  73. Peavey 6505+ 112 mod for channel balance
  74. Peavey Valveking Modifications
  75. tightening up BF Princeton reverb ?
  76. Best way to increase bass response...
  77. E-Wave DG2-30RH head Clean channel too bright
  78. ENGL E320 clean vol mod
  79. Trem and Bias
  80. marshall 1987x hiss reduction possible?
  81. Slope resistor and cap changes when changing a CF side to a 12ay7/12au7
  82. I wish to modify the tone stack in my Ashdown Mag 300 head.
  83. Using 12AT7 instead of 12AX7
  84. Subbing 12AU7 for 12AX7
  85. Any thoughts on how to "soften" attack on a Fender Bassman ?
  86. Fender Blues Junior excessive treble
  87. Looking for less low-cut in Randall RVC (like RD5C)
  88. Marshall JCM 900 mod
  89. Modding reverb
  90. Marshall Split channel again (some interesting information)
  91. Changing rectifier in a Ceriatone 5f6A Bassman
  92. guitar amp ->PA =cabulator
  93. Optocoupler in Fender tremolo
  94. Bugera 1960 infinium Schematic
  95. Epiphone Valve Junior OT upgrade -- help please???
  96. Hall Amplification VVR3 in Selmer Treble & Bass 50 Mk3
  97. modifying the Fender Greta line out
  98. Wanna help with basic mods...
  99. B+ voltage drop via Zener/MOSFET question
  100. Minimum output impedance for Marshall Lead 12.
  101. Hammond drawbars - guitar
  102. Peavey Bravo modifications
  103. Hot Rod Deville upgrade
  104. Twin reverb new speakers
  105. 65 Princeton reverb reissue Power transformer pn# 75165 Where can I get one ??
  106. Converting a PCB Champion 600 to a handwired 5F1
  107. Magnatone M13 - Easy Gain Boost
  108. Marshall DSL 100 - Mod to Switchable (50/100 watts)
  109. Fender Hot Rod Deluxe volume pot replacement
  110. Peavey Classic 50 Blue Mods
  111. 12AU7 failed in Orange AD30
  112. Crate gxt-100 is now a BENGL two more related mods needed
  113. Line-In to Active EQ of Fender Super Twin?
  114. Peavey Bandit 65 mods, anyone have any good mods?
  115. Best SGRs?
  116. Fender Greta Tone Control Mod for Music Playing Purposes
  117. Switchable Cathode Bypass Cap help
  118. Adding another tube to a Crate GXT100
  119. 6V6 bias question
  120. Marshall JCM800 4210 Channel Switcher - modification - advice sought.
  121. My amp needs to be louder, said the novice
  122. Marshall Valvestate - Adding Cooling Fan?
  123. Help with Mesa mark V CH2 mod
  124. JCA22H too bright
  125. Crate Gxt-100 looking for any mods
  126. The beauty of a decade box: ab763 tweaks
  127. non-presence 12ax7 phase inverter
  128. bugera 333xl-212 tone stack mod + more
  129. Silverface to Blackface
  130. Rivera S120 Mods - Please Help!
  131. Orange tiny Terror fx loop mod ?
  132. Help on DIY F2B with mods
  133. Changing Plate resistor question.
  134. Compilation of BF Reverb Fender Mods
  135. Guild Thunderbass 50Watt power supply issues
  136. Dual independent bias for a Windsor
  137. Amp Maker SE5 extra gain stage
  138. large PI tail resistor
  139. Bucking Transformer Built In to Chassis
  140. Univox U45b Tremolo
  141. Jcm 2210 mod help
  142. VHT Special 6 Ultra Mods
  143. Mod/Tweak VHT Special 6 Combo
  144. CRATE VC-3112 4xEL84 to 2xEL84 mod?
  145. "Fender" remote reverb control Badabing ka-pow!
  146. A couple questions about Peavey Butcher mods (should also apply to VTM)
  147. 5F1 Champ Mods - component ratings?
  148. 68 Princeton Reverb Bias Mod Question
  149. Moving clean ch. Tonestack on a 2210. Good idea?
  150. Can I add a Piezo tweeter to Peavey KB100?
  151. L-pad question
  152. Blackstar HT-1 - Add reverb?
  153. Useful Matchless Cluman mods?
  154. Line 100v amp conversion ?
  155. Add choke to blues junior (mexico)
  156. Music Man RD50 112 6l6 to 6v6
  157. LOW Gain !
  158. Looking for Bright options...
  159. DSL 401 mods
  160. prosonic combo weak reverb
  161. Marshall AVT50 cd input too loud
  162. Princeton 112 Plus - Shutdown MOD
  163. Fender Bassman output waveform oscillations
  164. PPIMV in SF Twin 135
  165. Uberschall channel balance
  166. Modifying Princeton 112 plus - Make Dirty Channel Versatile Clean Channel
  167. Fender princeton 112 solid state too loud!!
  168. Converting AA371 Basssman to best sounding circuit for guitar- which one ?
  169. Bugera v22 mod questions from a beginner
  170. Mustang III
  171. Connect a combo amp to a 4x12 cab.. Can it be done?
  172. need to add an Fx loop to valve amp ?
  173. Mesa boogie Nomad 100 new speaker reqd
  174. Marshall 1987X. customer says too loud
  175. Help me please
  176. Anyone know where to get the Fender silverface push/pull master volume pots?
  177. What Have I Done??? Orange Rocker 30 OT Swap
  178. Adding Midrange control to this tone circuit
  179. Effects loop wont work ?????
  180. I know, Valvestate 150 mod to make clean channel worth using?
  181. FX Loop problems
  182. Univox U200B
  183. El 84 fixed bias amp & Paul Ruby zener mod.
  184. Fender Blues jnr Too much treble
  185. Switching jack needed?
  186. Marshall JCM 800 2204 FX loop advice
  187. Question about gain staging
  188. tube saving power up tweaks?
  189. Mark Moyer mods to "Custom" Vibrolux Reverb
  190. Adding a choke to Ampeg V-4 power supply?
  191. Using Kalamazoo Model One as a preamp.
  192. Older Traynor YCV40 Master Mod.....again
  193. triode/pentode high/low power switch
  194. Peavey Classic 30 Cathode Bias / Half wattage mod
  195. BF Fender VibroVerb and Deluxe Reverb double note intermod at 15 Fret
  196. Lowering the Voltage on Traynor YBA-1
  197. 1996 Marshall 1959SLP Reissue
  198. Volume pots with power switches
  199. Factory bulletins on the Fender Princeton 112+? Nope but here are some mods I did
  200. Mods for Fender Champion 30
  201. EL84 NFB
  202. HRD Fromel Mod
  203. Dana Hall's VVR Install: Marshall 50 watt Plexi 1987x
  204. 1968 Bandmaster TFL5005 amp cabinet swap
  205. 5e3 Internal jumpering on an on/off switch
  206. Fender Hot Rod Deville 410
  207. Tone control lift for an 18 watter
  208. adding tweeter to 2x10 bass cabinet
  209. boosting highs/ adding presence control?
  210. fender bright swith help
  211. 5F2-A Build - Help with -NFB and Pull Switch
  212. Marshall 18 watt TMB mods?
  213. Super Champ XD harsh treble--any popular mods?
  214. Vox Lil Night Train Fizzy Overdrive
  215. Fender Dual Showman Tremolo clicking and speed issues
  216. Too Much Compression - Heavy Squish - Parallel 12ay7 Tweed Style
  217. Replacing & interchanging reverb tanks
  218. Mod Troubles !
  219. External bias jack
  220. variable slope mod
  221. Mod fender vibrato circuit???
  222. cathode R value
  223. Cause of distortion pedal fizz on certain amps?
  224. Can two single ended OT's be wired for push pull use?
  225. BITMO mod for Valve Jr
  226. the bright cap (blues jr or any other amp w/one)
  227. Bassman 100 Filter cap help
  228. Fender blues jr - convert to cathode bias?
  229. Fender Champion 600 mod help...
  230. Tweed Deluxe Mods -- HELP!!!
  231. Remote controolled reverb on a Bassman????
  232. CLASSICTONE-50w-OT-Transformer for Marshall?
  233. I thought of using a 12AY7 in my SF Champ homebrew instead of a 12AX7
  234. Cascode/Triode Switch?
  235. Peavey Encore 65 Service, and Upgrade or Mods ?
  236. Orange Drop Caps vs. Ceramic Disk?
  237. Power Tube change questions
  238. Question in regards to treble bleed resistor
  239. Matchless spitfire clone?
  240. Peavey Delta Blues to Hi Gainer
  241. Robert M. Martinelli Vox Pathfinder mods
  242. Laney LC15R - too much heat - should I install a fan ?
  243. Ok to run only 2 KT88s in Fender Twin
  244. Fender Pro Reverb: KT88 mod?
  245. VC508_Line_Out_Without_Speaker_Kill
  246. The carlsbro 100 pa/r amplifier
  247. Sovtek Mig 50 distortion and gain increase mods
  248. OT impedance switch question
  249. Drilling holes for mods in chassis
  250. Building "the perfect Champ"