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  1. Cathode bypass gain boost questions
  2. converting 6sc7 amp to use 6sl7
  3. 6CA7 tubes something different in the place of EL34 ??
  4. Remove ground lift network? JCM900 dual reverb
  5. Gallien Krueger MB150S-III adding Boost circuit ala GK MB150E-III
  6. JCM900 4500 Mod: C27 Jumper or...
  7. cathodyne/LTP switch (for small P-P amp)
  8. Replacing my tone control with an Orange-style shape control
  9. Project! Convert push/pull 'boost pot' to a footswitchable jack?
  10. Fender Twin bias dilema
  11. Fender Ultralinear - KT66, 77 or KT88?
  12. Improved circuit for power tube tremolo in a fixed-bias amp
  13. Bias test points for PCB amp
  14. Fender Frontman 65R volume mod
  15. Peavey Classic VTX 65 watt combo question for Enzo
  16. Eyelet boarding a reissue amp (Fender)
  17. Which switch for high voltage switching?
  18. Carvin Belair - moding one channel
  19. Sound differences from different dual op amps in SS amps
  20. De-biasing a Peavey Classic VT (6L6 output stage)
  21. Tonestack help
  22. add an attenuator to an existing tweeter?
  23. mesa mk IV bias
  24. Conversion to acoustic amp
  25. Taming Fender Blues Deluxe Abrupt Volume Control
  26. Switchable VTM 60/120
  27. SF Twin reverb Ultra linear transformer Blackfacing
  28. Age Old Problem of TOOO Bright Super Reverb
  29. Deeper voicing on EVH5150iii
  30. Different types of power resistors
  31. What cap value for this idea?
  32. Mesa Nomad 55 Reduce the gain
  33. Vox Escort Mains/Battery amp power upgrade?
  34. Possible wrong installation of diodes in place of a 6X4
  35. Taming a Gibson tone stack
  36. "Tighter" Bass on a Tone King.
  37. Peavey xxx upgrades
  38. Cable runs and effect on tone
  39. Help with mod to Crate FW65 Combo
  40. Mesa .50cal EL84 version bias pot mod
  41. Switch ratings for mods with high voltage
  42. Musicman 75 head 2100EX too much overdrive
  43. Marshall DSL mod
  44. Any ideas for a temperature controlled fan for Bass amp
  45. Traynor YBA-3 dummy load to use 8 ohm cabinet?
  46. Slitting speaker cone or knitting needle ? Kinks content
  47. Vox lead escort 50 - integrating valve stage
  48. LTPI on a 6G2?
  49. Adding a footswitch to a Blackstar HT-1
  50. Fender Deluxe 112 Plus Too LOUD
  51. JCM 2000 Marshall TSL 100 mod to DSL 100 Specs
  52. Built-in solid state reverb circuit for tube amp homebrew...
  53. Reduce treble in Fender Frontman 212r clean channel with circuit mod
  54. Silverfacing a Deluxe Reverb
  55. Crate Vintage Club 30 /50 Remove V1 from the dirt channel to reduce gain
  56. ROLAND BOLT 30- 60 cycle hum...
  57. Fender Bassman AA864 variant - mods
  58. Peavey 6505+ 112 mod for channel balance
  59. Peavey Valveking Modifications
  60. tightening up BF Princeton reverb ?
  61. Best way to increase bass response...
  62. E-Wave DG2-30RH head Clean channel too bright
  63. ENGL E320 clean vol mod
  64. Trem and Bias
  65. marshall 1987x hiss reduction possible?
  66. Slope resistor and cap changes when changing a CF side to a 12ay7/12au7
  67. I wish to modify the tone stack in my Ashdown Mag 300 head.
  68. Using 12AT7 instead of 12AX7
  69. Subbing 12AU7 for 12AX7
  70. Any thoughts on how to "soften" attack on a Fender Bassman ?
  71. Fender Blues Junior excessive treble
  72. Looking for less low-cut in Randall RVC (like RD5C)
  73. Marshall JCM 900 mod
  74. Modding reverb
  75. Marshall Split channel again (some interesting information)
  76. Changing rectifier in a Ceriatone 5f6A Bassman
  77. guitar amp ->PA =cabulator
  78. Optocoupler in Fender tremolo
  79. Bugera 1960 infinium Schematic
  80. Epiphone Valve Junior OT upgrade -- help please???
  81. Hall Amplification VVR3 in Selmer Treble & Bass 50 Mk3
  82. modifying the Fender Greta line out
  83. Wanna help with basic mods...
  84. B+ voltage drop via Zener/MOSFET question
  85. Minimum output impedance for Marshall Lead 12.
  86. Hammond drawbars - guitar
  87. Peavey Bravo modifications
  88. Hot Rod Deville upgrade
  89. Twin reverb new speakers
  90. 65 Princeton reverb reissue Power transformer pn# 75165 Where can I get one ??
  91. Converting a PCB Champion 600 to a handwired 5F1
  92. Magnatone M13 - Easy Gain Boost
  93. Marshall DSL 100 - Mod to Switchable (50/100 watts)
  94. Fender Hot Rod Deluxe volume pot replacement
  95. Peavey Classic 50 Blue Mods
  96. 12AU7 failed in Orange AD30
  97. Crate gxt-100 is now a BENGL two more related mods needed
  98. Line-In to Active EQ of Fender Super Twin?
  99. Peavey Bandit 65 mods, anyone have any good mods?
  100. Best SGRs?
  101. Fender Greta Tone Control Mod for Music Playing Purposes
  102. Switchable Cathode Bypass Cap help
  103. Adding another tube to a Crate GXT100
  104. 6V6 bias question
  105. Marshall JCM800 4210 Channel Switcher - modification - advice sought.
  106. My amp needs to be louder, said the novice
  107. Marshall Valvestate - Adding Cooling Fan?
  108. Help with Mesa mark V CH2 mod
  109. JCA22H too bright
  110. Crate Gxt-100 looking for any mods
  111. The beauty of a decade box: ab763 tweaks
  112. non-presence 12ax7 phase inverter
  113. bugera 333xl-212 tone stack mod + more
  114. Silverface to Blackface
  115. Rivera S120 Mods - Please Help!
  116. Orange tiny Terror fx loop mod ?
  117. Help on DIY F2B with mods
  118. Changing Plate resistor question.
  119. Compilation of BF Reverb Fender Mods
  120. Guild Thunderbass 50Watt power supply issues
  121. Dual independent bias for a Windsor
  122. Amp Maker SE5 extra gain stage
  123. large PI tail resistor
  124. Bucking Transformer Built In to Chassis
  125. Univox U45b Tremolo
  126. Jcm 2210 mod help
  127. VHT Special 6 Ultra Mods
  128. Mod/Tweak VHT Special 6 Combo
  129. CRATE VC-3112 4xEL84 to 2xEL84 mod?
  130. "Fender" remote reverb control Badabing ka-pow!
  131. A couple questions about Peavey Butcher mods (should also apply to VTM)
  132. 5F1 Champ Mods - component ratings?
  133. 68 Princeton Reverb Bias Mod Question
  134. Moving clean ch. Tonestack on a 2210. Good idea?
  135. Can I add a Piezo tweeter to Peavey KB100?
  136. L-pad question
  137. Blackstar HT-1 - Add reverb?
  138. Useful Matchless Cluman mods?
  139. Line 100v amp conversion ?
  140. Add choke to blues junior (mexico)
  141. Music Man RD50 112 6l6 to 6v6
  142. LOW Gain !
  143. Looking for Bright options...
  144. DSL 401 mods
  145. prosonic combo weak reverb
  146. Marshall AVT50 cd input too loud
  147. Princeton 112 Plus - Shutdown MOD
  148. Fender Bassman output waveform oscillations
  149. PPIMV in SF Twin 135
  150. Uberschall channel balance
  151. Modifying Princeton 112 plus - Make Dirty Channel Versatile Clean Channel
  152. Fender princeton 112 solid state too loud!!
  153. Converting AA371 Basssman to best sounding circuit for guitar- which one ?
  154. Bugera v22 mod questions from a beginner
  155. Mustang III
  156. Connect a combo amp to a 4x12 cab.. Can it be done?
  157. need to add an Fx loop to valve amp ?
  158. Mesa boogie Nomad 100 new speaker reqd
  159. Marshall 1987X. customer says too loud
  160. Help me please
  161. Anyone know where to get the Fender silverface push/pull master volume pots?
  162. What Have I Done??? Orange Rocker 30 OT Swap
  163. Adding Midrange control to this tone circuit
  164. Effects loop wont work ?????
  165. I know, Valvestate 150 mod to make clean channel worth using?
  166. FX Loop problems
  167. Univox U200B
  168. El 84 fixed bias amp & Paul Ruby zener mod.
  169. Fender Blues jnr Too much treble
  170. Switching jack needed?
  171. Marshall JCM 800 2204 FX loop advice
  172. Question about gain staging
  173. tube saving power up tweaks?
  174. Mark Moyer mods to "Custom" Vibrolux Reverb
  175. Adding a choke to Ampeg V-4 power supply?
  176. Using Kalamazoo Model One as a preamp.
  177. Older Traynor YCV40 Master Mod.....again
  178. triode/pentode high/low power switch
  179. Peavey Classic 30 Cathode Bias / Half wattage mod
  180. BF Fender VibroVerb and Deluxe Reverb double note intermod at 15 Fret
  181. Lowering the Voltage on Traynor YBA-1
  182. 1996 Marshall 1959SLP Reissue
  183. Volume pots with power switches
  184. Factory bulletins on the Fender Princeton 112+? Nope but here are some mods I did
  185. Mods for Fender Champion 30
  186. EL84 NFB
  187. HRD Fromel Mod
  188. Dana Hall's VVR Install: Marshall 50 watt Plexi 1987x
  189. 1968 Bandmaster TFL5005 amp cabinet swap
  190. 5e3 Internal jumpering on an on/off switch
  191. Fender Hot Rod Deville 410
  192. Tone control lift for an 18 watter
  193. adding tweeter to 2x10 bass cabinet
  194. boosting highs/ adding presence control?
  195. fender bright swith help
  196. 5F2-A Build - Help with -NFB and Pull Switch
  197. Marshall 18 watt TMB mods?
  198. Super Champ XD harsh treble--any popular mods?
  199. Vox Lil Night Train Fizzy Overdrive
  200. Fender Dual Showman Tremolo clicking and speed issues
  201. Too Much Compression - Heavy Squish - Parallel 12ay7 Tweed Style
  202. Replacing & interchanging reverb tanks
  203. Mod Troubles !
  204. External bias jack
  205. variable slope mod
  206. Mod fender vibrato circuit???
  207. cathode R value
  208. Cause of distortion pedal fizz on certain amps?
  209. Can two single ended OT's be wired for push pull use?
  210. BITMO mod for Valve Jr
  211. the bright cap (blues jr or any other amp w/one)
  212. Bassman 100 Filter cap help
  213. Fender blues jr - convert to cathode bias?
  214. Fender Champion 600 mod help...
  215. Tweed Deluxe Mods -- HELP!!!
  216. Remote controolled reverb on a Bassman????
  217. CLASSICTONE-50w-OT-Transformer for Marshall?
  218. I thought of using a 12AY7 in my SF Champ homebrew instead of a 12AX7
  219. Cascode/Triode Switch?
  220. Peavey Encore 65 Service, and Upgrade or Mods ?
  221. Orange Drop Caps vs. Ceramic Disk?
  222. Power Tube change questions
  223. Question in regards to treble bleed resistor
  224. Matchless spitfire clone?
  225. Peavey Delta Blues to Hi Gainer
  226. Robert M. Martinelli Vox Pathfinder mods
  227. Laney LC15R - too much heat - should I install a fan ?
  228. Ok to run only 2 KT88s in Fender Twin
  229. Fender Pro Reverb: KT88 mod?
  230. VC508_Line_Out_Without_Speaker_Kill
  231. The carlsbro 100 pa/r amplifier
  232. Sovtek Mig 50 distortion and gain increase mods
  233. OT impedance switch question
  234. Drilling holes for mods in chassis
  235. Building "the perfect Champ"
  236. Add tube rectifier?
  237. Crate GT1200H - Mod rhythm channel for more laid-back distortion
  238. phase inverter question
  239. Split Cathode Bias: Safe to run one tube?
  240. Power Transformer forVox Pathfinder 15R
  241. Filtercaps
  242. Marshall 800 mod question
  243. Modding Randall MTS Plexi module
  244. bright cap adjustment?
  245. Peavey Vypyr 15 Noise Gate
  246. JFET Switching and Isolation, question
  247. Tremolo mod on 1960s Ampeg Rocket 2 amp
  248. Adding MIDI CC Support to the Diezel Herbert, VH4, and Hagen
  249. JCM800 4211 mods?
  250. Bias Mod For Peavey Mace VT