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  1. Buying used amps? Revalve?
  2. So what are signs of an improperly biased amp?
  3. Removal of reverb tank on tube reverb Fender?
  4. VOX DA5 grill cloth needed....Help please.
  5. Boogie Mark IV - losing channel 1
  6. Low B+ Voltage on a Fender... What effect does that have?
  7. GZ34 vs 5U4 in PR
  8. Question on single ended amps
  9. cloning?
  10. Tubes for vintage Marshall 1974X
  11. Tube brand question
  12. anyone ever build a champ w/100w output section?
  13. Odd A-B-Y behavior - please help?
  14. Fender Rivera Concert issue
  15. How do you enable reverb on the normal channel of a DRRI?
  16. reverb hum problem, please help
  17. DRRI: Source for pot with push/pull switch?
  18. Doh! amp on stby for 4 days
  19. roland jc-50 breaking up early
  20. Another ohms question..
  21. 59 Bandmaster Too much distortion
  22. pulling 2 tubes in a dual showman?
  23. Pignose G40V Tube Swap-Out?
  24. Favorite single 12ax7 for cleans?
  25. Newb question about Biasing
  26. German black plate 12AX7?
  27. Pro JR
  28. Silvertone 1482: 4 ohm or 8 ohm OT?
  29. Bias Voltage Semantics- argh!
  30. Switchbone
  31. Preamp or power tubes will affect tone more?
  32. Deluxe Reverb with the Mullard GZ33
  33. Question about AB 763
  34. Best book for Amp electronics understanding and/or building for newb
  35. Ab763 cap missing (10pf on the 3.3M/10pf)... what effect does it have?
  36. Need help with BF Bassman backpanel
  37. Is this a natural occurance?
  38. Impedance mismatch & blackface amps...
  39. 6-6V6's ?
  40. What does a STANDBY switch do?
  41. Cold biased tubes for Matchless?
  42. Hmmm..what are these diodes doing in the power section?
  43. general amp maintenance - new to this
  44. Bassman LOve!
  45. Good 4" speaker for guitar practice amp?
  46. Can any mods make the new Vibrolux sound good?
  47. Amp tech problem.
  48. Weber Attenuators - Mini Max
  49. reverb problems
  50. Original Equipment Tubes
  51. Blackfacing a '68 or '69 Silverface
  52. Does a 45w Princeton Rev. HAVE to sound like a Boogie?
  53. Arg!!...Help with grounding issue (??)...
  54. Can I use 3.2ohm in a 4ohm amp?
  55. Buffered Splitter
  56. Meas Nomad 55 trouble ?
  57. Advice needed re: porting a 4x10 cab
  58. When bad things happen to good tubes....
  59. Tung Sol 5881 RI vs. Ruby Tubes 6L6GC STR
  60. Tube Matching Question
  61. JAN/Phillips 6AU6WC ?
  62. What Needs Replacing/Maintenance in my Amp?
  63. What are mods you can do to ANY valve amps?
  64. Extension Cab for Blues Jr.
  65. High Efficiency Speakers
  66. Tube tester question
  67. Tonal qualities of caps for tweed Pro
  68. Miniature Toggle OK for Standby Switch?
  69. Custom Cable Needed
  70. EL34 Cathode-Bias
  71. Bias question
  72. Will an export amp work in the States?
  73. what limits the clean headroom of my 64 princeton reverb?
  74. Tech tip for the do it yourself built chassis
  75. Tung-sol reissue 12AX7 failure
  76. Has anyone ever used the Omnisonic Volume Control Box
  77. Can you DI a valve preamp/solid state power amp, without a load?
  78. I want to use a V30 in my Fender concert..
  79. 6V6GTA vs other 6V6's
  80. Volume Boost On Tonemaster
  81. Ruby a better reverb tank than accutronics?
  82. technical view.. how is the Fender 57 twin?
  83. Almost ultrasonic.
  84. What's the best way to clean grunge off of 1/4 in. speaker cable plugs?
  85. Question - Peavy Classic 30
  86. Speaker Cab wiring?
  87. Help with Schematic
  88. 12av7
  89. Weird chirping/oscillation in BF Bassman
  90. Sonically speaking - what's the difference in these speakers?
  91. long plate, short plate, smooth, ribbed, why so many?
  92. Noob help with some tube problems
  93. Ticking and motor-boating in a Velocette
  94. why are RCA blackplates so expensive?
  95. NEETS reference
  96. TAD 6L6's
  97. Quincy speakers? anyone know this old company ?
  98. Safe mismatch with tube heads?
  99. Pro Reverb Speaker Cutting in and out
  100. What Class is this?
  101. what ECC83s should i get for my VC30
  102. Soldering Question
  103. SF Princeton Non-Reverb Voltages
  104. KT66 vs EL34 Output Transformer
  105. What makes an amp punch like the FTR37?
  106. Newbie to tube amps -- question
  107. Quick question for you techies...
  108. Volume drop at volume, bad filter caps?
  109. Neg Feedback Tweed Pro and Bandmaster
  110. T or F: Ruby 12ax7a = jjecc83?
  111. EL34 vs. KT77
  112. Tube Amp Transformer Safety Device?
  113. Crossing Military numbered tubes. Anyone have a link?
  114. Amp cuts out if I stop playing, comes back up when I do
  115. ca. 1971 Marshall 50 Watt AC Power board
  116. Using KT66 instead of EL34's??
  117. Problem w/ Epi Valve Jr after latest mod...
  118. mission amp 5e3 questions
  119. Question: biasing my Germino Club 40
  120. plate load resistors SFDR
  121. Are these soldering irons sufficient for an amp build?
  122. Yellowjacket question
  123. Loose Speaker Dome?
  124. Fiction or Fact about amps with & without reverb
  125. KT77 in place of a 6550?
  126. Heater wiring help, please
  127. How does one determine a speaker's wattage rating?
  128. SS Rectifiers - Weber Vs Groove tubes
  129. Good Amp techs in Charlotte area?
  130. New (old) amp turns on but squeals like a stuck pig
  131. pre and post od tonestack question
  132. hi-fi stereo speaker in guitar amp help
  133. Recommend a new production 6L6 or 5881 tube...
  134. Can I leave my Princeton Reverb on?
  135. 4x12 wiring experts, I need some help!
  136. Amp Cab Design Specs
  137. How much louder is a 2x12 than a 1x12?
  138. Difficulty level to install a loaded board from turretboards.com into a Valve Jr?
  139. Benefit of oil filled caps in tweed amps
  140. Celestion Heritage speaker wiring question?
  141. Can a trem oscillator be microphonic?
  142. Weird Thing Happening To A Tube
  143. Tubes Blown?? (first time tube amp owner)
  144. Yellowjackets and Substi-tubes
  145. Blackface Reverb circuits
  146. jcm900 4100 fx loop jack issue
  147. Preamp Tube Advice for Heritage Amps
  148. amp tech in Massachusetts?
  149. New filter caps; now less gain?
  150. splawn marshall mod schematic,im looking for one?
  151. Output tube shows no bias??
  152. Anybody ID 12AX7 w/"52" Tab?
  153. DrZ Maz 18jr Hummed, Glowed, Died
  154. Anyone have some tired EL34s or 6L6s?
  155. chaining fender SR channels ??
  156. '66 Bassman - OD Mods to Bass Ch
  157. Why doesn't my '68 Deluxe Reverb sound good?
  158. Amp suddenly died.
  159. SF to BF plate for a Pro Reverb
  160. Sick JC-120
  161. EL-84 Setup
  162. How hot should an amp get!?
  163. How do V2 and Phase Inverter tubes effect tone?
  164. Determining Correct Voltages for a Solid State Amp
  165. Goofy Deluxe Reverb
  166. Compu-Bias Users: Assistance, Please...
  167. Will my amp cook a pair of JAN Philips 6L6WGB's?
  168. Thoughts on buying "NOS" signal caps?
  169. What "modern" appliance did the Raytheon company invent?
  170. 12AX7's
  171. Replacing Gibson 'diode bridge' with individual diodes
  172. Preamp socket broken -- help...
  173. Super Reverb Cap Job Question
  174. capacitance tester
  175. JJ 6BQ5 EL84's in DSL401...
  176. Bassman 5F6A Master Volume Without Tone Loss??
  177. Plate voltage for a 70's AC50
  178. How to determine Ohms of unlabeled speaker outputs?
  179. Fender G-DEC Junior. Running Hot
  180. Noise from Fender Blues Jr... New pre-tubes?
  181. Ef86
  182. Tech problem with my SLO - Blown fuse
  183. Another Screen Resistor Question
  184. Is my Tranny, OK? that sticky stuff has came out the top and ran down the side
  185. speaker replacement polarity
  186. Is it necessary to repair a puncture hole in a heavily doped speaker?
  187. rectifier tube
  188. Help reading screen grid values in 6L6 amp
  189. 1971 Superlead, caps O.K?
  190. princeton reverb trem issues
  191. OMG!...Another Bias Qutestion--Single Ended Amps
  192. reverb tank quest?
  193. Running a 5Y3GT in a 5F4 Super?
  194. DRRI - pulling v1 12ax7
  195. AMp Building Tool Question
  196. Rivera with stock US voltage goes to EU
  197. 3M Pot needed for AB763 Deluxe Reverb
  198. Bad Cat Hot Cat Biasing Question
  199. Modified Crate Palomino V8 Humm Buzz Noise-help
  200. 61 GA40 Tremelo
  201. Insulating a cab?
  202. Marshall JCM 2000 DSL 401 COMBO speaker load question
  203. why are Mullard ecc-83's favoured for old Marshall amps?
  204. How to add a bias pot to my old amp
  205. How to add bias pot to my Traynor YBA-1; no kidding...
  206. Changing tubes?
  207. Pro Reverb Question
  208. JJ or SED Winged "C" EL-34s for a Hot Cat
  209. Mesa Maverick Question
  210. Tube noob question...
  211. GT Data Sheets ??
  212. Pulling tubes adding cabs.
  213. best speakers for 73 Pro Reverb? using single coils only
  214. Sputtering 6L6
  215. Make a Linear Pot act like Audio Taper?
  216. Input triode on REALLY old Fenders
  217. Mesa studio calibur fixed bias?
  218. Can mic wire be used for speaker wire?
  219. Who Manufactured Pinnacle ECC83s?
  220. Silverface SR conversion to BF Specs + 100 ohm bias resistors?
  221. Tube Compatability
  222. Marshall plastic feet
  223. RFT ax7 report
  224. Static from input jack.
  225. Question about Impedance
  226. Rocker 30 Impedence/Performance question...
  227. Cathode Resistor Biasing Question
  228. 4 ohm 10" Speakers
  229. volume knob down but still have volume
  230. Fender Twin Reverb Attenuation??
  231. Homemade Orange Clone F.A.C. question
  232. Line output and instrument cable?
  233. Extension Cab w/o extension jack?
  234. Do You Leave Your Amp Plugged In?
  235. Will working on a solid state amp kill me
  236. Ultralinear Twin - clean machine
  237. Amp parts, Mouser out of stock on caps? Other sources?
  238. NOS filter caps... is this a good idea?
  239. Comment on this Technology?
  240. Poor Man's Speaker Switcher?
  241. Alembic F2B question
  242. JJ EL84 vs. NOS Mullard
  243. Individual bias controls on each tube?
  244. Ceriatone 5E3 head kit...
  245. Vintage Sound Amplifiers
  246. Mail-away Amp Tech
  247. Hey You Tube Heads, More Tube Lore
  248. 8 or 16 ohm speakers.
  249. Hot Cat Amp - A/B/Y Switch For Channels??
  250. Help: '73 Fender twin reverb problem/L.A. tech needed