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  1. Want to mod my Diamond SpecOp to Nitrox
  2. EVH 5150 MK3 mini head reducing the gain
  3. Ground reference for DC fan supply?
  4. Taming Fender Red Knob Dual Showman
  5. power tube preference in jcm 900 4500
  6. lowering the presence
  7. ch switch
  8. Importance of grid-stopper in interstage coupling?
  9. Cathode bypass capacitors: Electrolytic vs. film?
  10. Hooking a Charvel to a Fender
  11. Adding spring reverb to a practice amp board already printed for spring reverb?
  12. Mackie Power supply
  13. Metal film cap sizes.
  14. b-52 at112 60 mod for el 34's
  15. Marshall dsl 401 volume OD2 mod.
  16. Tremolo intensity on Univox U42/45
  17. A Cleaner Clean Channel
  18. Mooer Elec Lady Flanger - Volume Drop Mod
  19. Reducing Voltage On Laney Supergroup 60 Watt
  20. Looking for the dookie mod
  21. Sano 50 WRT - convert 8417 to 6550 or 6L6
  22. Can I "Raw Control" or Tone Stack bypass pot?
  23. How to test output transformer performance for overperforming amp
  24. Mads Vox ac30c2
  25. 12AY7 PI tube, good, bad or ugly? Your thoughts please.
  26. 5f1 champ w/electronic reverb
  27. reducing reverb effect in deluxe reverb aa763 circuit?
  28. Champ 600 EQ mod balls-up!
  29. More Thomas Vox repair manuals
  30. Negative feedback, and resonance question?
  31. BF Princeton Reverb - wider range for treble pot
  32. Schematic question?
  33. Preamp stage help please.
  34. Modding gain stage on amp
  35. How does this look for a boosted up reverb unit circuit?
  36. Peavey Delta Blues Distorted
  37. Teach me a little something about NFB in a Deluxe Reverb
  38. 65 ReIssue Super Reverb Midrange Pot change
  39. Tweed Deluxe Coupling Cap Changes
  40. Suggested Mods for Peavey Butcher - Negative Feedback Loop Tone control?
  41. Adjustable bias and measuring points Valve King 112
  42. Peavey Artist VT resonance & presence mods
  43. Marshall JTM 60 choke mod
  44. Peavey Valveking Pre PI Master Volume mod Thoughts?
  45. THD picovalve
  46. Marshall dsl 15 h mod help
  47. Watkins Dominator extra stage?
  48. Power supply filtering
  49. Understanding/improving JTM60 FX LOOP
  50. 5E3 cascading inputs MAD FEEDBACK! Need fix
  51. Replace 2 x12" speakers with 1x 15", possible? Worth it?
  52. adding DC heaters to a high gain 100 watt amp
  53. ValveKing 100 mod questions
  54. Orange Dark Terror. Mod for more resonance.?
  55. Elevated AC heaters?
  56. Mods for a B-52 ST100A (can get one dirt cheap)
  57. Hum/Noise vs shielded cable or twisted wires in a Peavey Triumph 60
  58. A bit confused about V1 and V2 in my Mesa F-50
  59. LED activation from 5v winding?
  60. advice on more bass and treble from "Micro Champ"
  61. effects loop idea
  62. question about mods to valve amps
  63. Inexpensive L-Pads...
  64. Change led color and some mod to footswitch
  65. Hammond / Everett AO-50 conversion to Vox AC15
  66. Mesa Boogie F-50.. what is this?
  67. Question about using relays for foot s/w
  68. Bugera V22 Infinium CHOKE mod
  69. Opinions on a relay activated volume boost
  70. Bright Switch/Cap Wiring
  71. would a Master Volume solve my issue?
  72. MOSFET PI, how to Bias?
  73. Fender M80 Overdrive Channel
  74. Ampeg Ba 210 SP High EQ mod?
  75. Can't Turn Volume Completely Off
  76. Solder Both Sides of PCB?
  77. Adding gain stage to Marshall 2203; handling the 10k cold clipped stage
  78. Adding an on/off reverb switch to vintage amp
  79. Fender Twin Reverb
  80. DSL 100: Changing Grid Blockers and Bias Resistors
  81. Mesa Boogie SPAX7 in a Peavey Valve King Head.
  82. Effects loop on a AC15CHWX
  83. New AB763 Blackface Mods Page (includes DRRI & 68 CDR)
  84. Ampeg B-15 Preamp...
  85. Modding Boost Switch on Bugera V22
  86. 65 Blackface Fender Showman PPIMV
  87. Peavey Valve King 112 Dynamics/Attack/Gain fuzz MOD
  88. Final tweaking of a 1959SLP Re-issue..
  89. JTM60/JCM600 important MODS
  90. Adding a choke to Sovtek Mig 60
  91. I wish I had one of these years ago - '71 Traynor YBA-1 gets Plexi modded ** CLIP **
  92. Peavey Triumph 60 Hum
  93. Fender Frontman Mod.
  94. Removing power valves to reduce output
  95. Fender Reverb Mods
  96. Vox DA5 lineout modification - speaker bypass
  97. Princeton 112 Plus - 50k 15A Volume Pot Mod - Part Number And Source Needed, Please
  98. Possible to add NFB to this schematic?
  99. lower wattage in 5E7A tweed pro?
  100. Peavey Classic 50 Blue Guitar Mods
  101. I think it's attenuater time
  102. Pushing V2 harder within older fenders. Pre-amp clipping mod?
  103. Bassman AA568 unused triode applications
  104. Super Reverb '65 RI - Changing Output Transformer to Match Speaker Load
  105. Log/ Lin Bass Pot (DlxRev).
  106. EL34 in a Champ?
  107. Blackstar Artisan 100 circuit PPIMV and FX Loop Mods
  108. 6150+ Mods and a real engineer guitarist!
  109. Adding Filament Transformer to Sovtek Mig-50. How to place it?
  110. Thank you Valvewizard - Ground, hum blocking
  111. Replacement speakers poll
  112. Bias points
  113. 5150 bias mod
  114. Fender Pro Jr More Bass
  115. Trying New Speakers/replacements
  116. Marshall Amp increase Bass/low-mid response
  117. Can y'all help me with a minor mod to a Peavey Rage 158?
  118. Relay wiring for Vox Night Train mod
  119. Adding additional input output to Line6 spider ii amp
  120. Suggestion for moderator - let's spell "Tweeks" correctly!
  121. Looking for more gain mod schematic jcm800 2210
  122. Negative feedback loop mod for Pro Reverb
  123. Using Combo amp Speaker as Cab
  124. Marshall JVM
  125. Are SoZo blue caps the same as Fender blue caps?
  126. Line out help please
  127. I want to reduce the gain in my Peavey Rage 158.
  128. help with some peavey XXX mods
  129. Simplest way to turn a combo amp into both a head and a cab as well?
  130. Amp Mod for some More Gain?
  131. Bogen PA head for guitar? Help with pentode preamp stages.
  132. Another JTM60 1x12 thread/question... (haven't seen this one)
  133. Fender Blues Jnr Mk3 Mod
  134. What's this JCM800 mod do?
  135. What's this JCM800 mod do?
  136. Supro Inspired VVR Question
  137. MASSIVE improvement to Mesa Boogie SOB mod - How to add a real presence control
  138. Adding tube spring reverb to a Mesa Boogie SOB
  139. 5V4 instead of 5Y3 ?
  140. Bypass Digital Board in Super Champ XD (& possibly others)
  141. Epiphone valve standard to increase the treble
  142. Different Speaker Outputs On Marshall DSL 40C
  143. Help needed to upgrade Capacitors in a Marshall DSL 40C
  144. coupling cap to block some bass?
  145. Hicks mender
  146. 2015 VOX Ac30c2 service manual
  147. Drop preamp voltage
  148. Fun new zener tweak!
  149. Convert 5F6A Bassman into 5F8A Twin
  150. Blues Jr, any mods or advice available to convert tube mount pcb to hard wired?
  151. Newest Peavey Classic 30 - Blue Guitar Mods?
  152. Cathode bypass gain boost questions
  153. converting 6sc7 amp to use 6sl7
  154. 6CA7 tubes something different in the place of EL34 ??
  155. Remove ground lift network? JCM900 dual reverb
  156. Gallien Krueger MB150S-III adding Boost circuit ala GK MB150E-III
  157. JCM900 4500 Mod: C27 Jumper or...
  158. cathodyne/LTP switch (for small P-P amp)
  159. Replacing my tone control with an Orange-style shape control
  160. Project! Convert push/pull 'boost pot' to a footswitchable jack?
  161. Fender Twin bias dilema
  162. Fender Ultralinear - KT66, 77 or KT88?
  163. Improved circuit for power tube tremolo in a fixed-bias amp
  164. Bias test points for PCB amp
  165. Fender Frontman 65R volume mod
  166. Peavey Classic VTX 65 watt combo question for Enzo
  167. Eyelet boarding a reissue amp (Fender)
  168. Which switch for high voltage switching?
  169. Carvin Belair - moding one channel
  170. Sound differences from different dual op amps in SS amps
  171. De-biasing a Peavey Classic VT (6L6 output stage)
  172. Tonestack help
  173. add an attenuator to an existing tweeter?
  174. mesa mk IV bias
  175. Conversion to acoustic amp
  176. Taming Fender Blues Deluxe Abrupt Volume Control
  177. Switchable VTM 60/120
  178. SF Twin reverb Ultra linear transformer Blackfacing
  179. Age Old Problem of TOOO Bright Super Reverb
  180. Deeper voicing on EVH5150iii
  181. Different types of power resistors
  182. What cap value for this idea?
  183. Mesa Nomad 55 Reduce the gain
  184. Vox Escort Mains/Battery amp power upgrade?
  185. Possible wrong installation of diodes in place of a 6X4
  186. Taming a Gibson tone stack
  187. "Tighter" Bass on a Tone King.
  188. Peavey xxx upgrades
  189. Cable runs and effect on tone
  190. Help with mod to Crate FW65 Combo
  191. Mesa .50cal EL84 version bias pot mod
  192. Switch ratings for mods with high voltage
  193. Musicman 75 head 2100EX too much overdrive
  194. Marshall DSL mod
  195. Any ideas for a temperature controlled fan for Bass amp
  196. Traynor YBA-3 dummy load to use 8 ohm cabinet?
  197. Slitting speaker cone or knitting needle ? Kinks content
  198. Vox lead escort 50 - integrating valve stage
  199. LTPI on a 6G2?
  200. Adding a footswitch to a Blackstar HT-1
  201. Fender Deluxe 112 Plus Too LOUD
  202. JCM 2000 Marshall TSL 100 mod to DSL 100 Specs
  203. Built-in solid state reverb circuit for tube amp homebrew...
  204. Reduce treble in Fender Frontman 212r clean channel with circuit mod
  205. Silverfacing a Deluxe Reverb
  206. Crate Vintage Club 30 /50 Remove V1 from the dirt channel to reduce gain
  207. ROLAND BOLT 30- 60 cycle hum...
  208. Fender Bassman AA864 variant - mods
  209. Peavey 6505+ 112 mod for channel balance
  210. Peavey Valveking Modifications
  211. tightening up BF Princeton reverb ?
  212. Best way to increase bass response...
  213. E-Wave DG2-30RH head Clean channel too bright
  214. ENGL E320 clean vol mod
  215. Trem and Bias
  216. marshall 1987x hiss reduction possible?
  217. Slope resistor and cap changes when changing a CF side to a 12ay7/12au7
  218. I wish to modify the tone stack in my Ashdown Mag 300 head.
  219. Using 12AT7 instead of 12AX7
  220. Subbing 12AU7 for 12AX7
  221. Any thoughts on how to "soften" attack on a Fender Bassman ?
  222. Fender Blues Junior excessive treble
  223. Looking for less low-cut in Randall RVC (like RD5C)
  224. Marshall JCM 900 mod
  225. Modding reverb
  226. Marshall Split channel again (some interesting information)
  227. Changing rectifier in a Ceriatone 5f6A Bassman
  228. guitar amp ->PA =cabulator
  229. Optocoupler in Fender tremolo
  230. Bugera 1960 infinium Schematic
  231. Epiphone Valve Junior OT upgrade -- help please???
  232. Hall Amplification VVR3 in Selmer Treble & Bass 50 Mk3
  233. modifying the Fender Greta line out
  234. Wanna help with basic mods...
  235. B+ voltage drop via Zener/MOSFET question
  236. Minimum output impedance for Marshall Lead 12.
  237. Hammond drawbars - guitar
  238. Peavey Bravo modifications
  239. Hot Rod Deville upgrade
  240. Twin reverb new speakers
  241. 65 Princeton reverb reissue Power transformer pn# 75165 Where can I get one ??
  242. Converting a PCB Champion 600 to a handwired 5F1
  243. Magnatone M13 - Easy Gain Boost
  244. Marshall DSL 100 - Mod to Switchable (50/100 watts)
  245. Fender Hot Rod Deluxe volume pot replacement
  246. Peavey Classic 50 Blue Mods
  247. 12AU7 failed in Orange AD30
  248. Crate gxt-100 is now a BENGL two more related mods needed
  249. Line-In to Active EQ of Fender Super Twin?
  250. Peavey Bandit 65 mods, anyone have any good mods?