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  1. Newb question about Biasing
  2. German black plate 12AX7?
  3. Pro JR
  4. Silvertone 1482: 4 ohm or 8 ohm OT?
  5. Switchbone
  6. Preamp or power tubes will affect tone more?
  7. Deluxe Reverb with the Mullard GZ33
  8. Question about AB 763
  9. Best book for Amp electronics understanding and/or building for newb
  10. Ab763 cap missing (10pf on the 3.3M/10pf)... what effect does it have?
  11. Need help with BF Bassman backpanel
  12. Is this a natural occurance?
  13. Impedance mismatch & blackface amps...
  14. 6-6V6's ?
  15. What does a STANDBY switch do?
  16. Cold biased tubes for Matchless?
  17. Hmmm..what are these diodes doing in the power section?
  18. general amp maintenance - new to this
  19. Bassman LOve!
  20. Good 4" speaker for guitar practice amp?
  21. Can any mods make the new Vibrolux sound good?
  22. Amp tech problem.
  23. Weber Attenuators - Mini Max
  24. reverb problems
  25. Original Equipment Tubes
  26. Blackfacing a '68 or '69 Silverface
  27. Does a 45w Princeton Rev. HAVE to sound like a Boogie?
  28. Arg!!...Help with grounding issue (??)...
  29. Can I use 3.2ohm in a 4ohm amp?
  30. Buffered Splitter
  31. Meas Nomad 55 trouble ?
  32. Advice needed re: porting a 4x10 cab
  33. When bad things happen to good tubes....
  34. Tung Sol 5881 RI vs. Ruby Tubes 6L6GC STR
  35. Tube Matching Question
  36. JAN/Phillips 6AU6WC ?
  37. What Needs Replacing/Maintenance in my Amp?
  38. What are mods you can do to ANY valve amps?
  39. Extension Cab for Blues Jr.
  40. High Efficiency Speakers
  41. Tube tester question
  42. Tonal qualities of caps for tweed Pro
  43. Miniature Toggle OK for Standby Switch?
  44. Custom Cable Needed
  45. Will an export amp work in the States?
  46. what limits the clean headroom of my 64 princeton reverb?
  47. Tech tip for the do it yourself built chassis
  48. Tung-sol reissue 12AX7 failure
  49. Has anyone ever used the Omnisonic Volume Control Box
  50. Can you DI a valve preamp/solid state power amp, without a load?
  51. I want to use a V30 in my Fender concert..
  52. 6V6GTA vs other 6V6's
  53. Volume Boost On Tonemaster
  54. Ruby a better reverb tank than accutronics?
  55. technical view.. how is the Fender 57 twin?
  56. Almost ultrasonic.
  57. Question - Peavy Classic 30
  58. Speaker Cab wiring?
  59. Help with Schematic
  60. 12av7
  61. Weird chirping/oscillation in BF Bassman
  62. Sonically speaking - what's the difference in these speakers?
  63. long plate, short plate, smooth, ribbed, why so many?
  64. Noob help with some tube problems
  65. Ticking and motor-boating in a Velocette
  66. why are RCA blackplates so expensive?
  67. NEETS reference
  68. TAD 6L6's
  69. Quincy speakers? anyone know this old company ?
  70. Safe mismatch with tube heads?
  71. Pro Reverb Speaker Cutting in and out
  72. what ECC83s should i get for my VC30
  73. Soldering Question
  74. SF Princeton Non-Reverb Voltages
  75. KT66 vs EL34 Output Transformer
  76. What makes an amp punch like the FTR37?
  77. Quick question for you techies...
  78. Volume drop at volume, bad filter caps?
  79. Neg Feedback Tweed Pro and Bandmaster
  80. T or F: Ruby 12ax7a = jjecc83?
  81. EL34 vs. KT77
  82. Tube Amp Transformer Safety Device?
  83. Crossing Military numbered tubes. Anyone have a link?
  84. Amp cuts out if I stop playing, comes back up when I do
  85. ca. 1971 Marshall 50 Watt AC Power board
  86. Using KT66 instead of EL34's??
  87. Problem w/ Epi Valve Jr after latest mod...
  88. mission amp 5e3 questions
  89. Question: biasing my Germino Club 40
  90. plate load resistors SFDR
  91. Are these soldering irons sufficient for an amp build?
  92. Yellowjacket question
  93. Loose Speaker Dome?
  94. Fiction or Fact about amps with & without reverb
  95. KT77 in place of a 6550?
  96. Heater wiring help, please
  97. How does one determine a speaker's wattage rating?
  98. SS Rectifiers - Weber Vs Groove tubes
  99. New (old) amp turns on but squeals like a stuck pig
  100. pre and post od tonestack question
  101. hi-fi stereo speaker in guitar amp help
  102. Recommend a new production 6L6 or 5881 tube...
  103. Can I leave my Princeton Reverb on?
  104. 4x12 wiring experts, I need some help!
  105. Amp Cab Design Specs
  106. How much louder is a 2x12 than a 1x12?
  107. Difficulty level to install a loaded board from turretboards.com into a Valve Jr?
  108. Benefit of oil filled caps in tweed amps
  109. Celestion Heritage speaker wiring question?
  110. Can a trem oscillator be microphonic?
  111. Weird Thing Happening To A Tube
  112. Tubes Blown?? (first time tube amp owner)
  113. Yellowjackets and Substi-tubes
  114. Blackface Reverb circuits
  115. jcm900 4100 fx loop jack issue
  116. Preamp Tube Advice for Heritage Amps
  117. amp tech in Massachusetts?
  118. New filter caps; now less gain?
  119. splawn marshall mod schematic,im looking for one?
  120. Output tube shows no bias??
  121. Anybody ID 12AX7 w/"52" Tab?
  122. DrZ Maz 18jr Hummed, Glowed, Died
  123. Anyone have some tired EL34s or 6L6s?
  124. chaining fender SR channels ??
  125. Why doesn't my '68 Deluxe Reverb sound good?
  126. Amp suddenly died.
  127. SF to BF plate for a Pro Reverb
  128. Sick JC-120
  129. EL-84 Setup
  130. How hot should an amp get!?
  131. How do V2 and Phase Inverter tubes effect tone?
  132. Determining Correct Voltages for a Solid State Amp
  133. Goofy Deluxe Reverb
  134. Compu-Bias Users: Assistance, Please...
  135. Will my amp cook a pair of JAN Philips 6L6WGB's?
  136. Thoughts on buying "NOS" signal caps?
  137. What "modern" appliance did the Raytheon company invent?
  138. 12AX7's
  139. Replacing Gibson 'diode bridge' with individual diodes
  140. Preamp socket broken -- help...
  141. Super Reverb Cap Job Question
  142. capacitance tester
  143. JJ 6BQ5 EL84's in DSL401...
  144. Bassman 5F6A Master Volume Without Tone Loss??
  145. Plate voltage for a 70's AC50
  146. How to determine Ohms of unlabeled speaker outputs?
  147. Fender G-DEC Junior. Running Hot
  148. Noise from Fender Blues Jr... New pre-tubes?
  149. Ef86
  150. Tech problem with my SLO - Blown fuse
  151. Another Screen Resistor Question
  152. Is my Tranny, OK? that sticky stuff has came out the top and ran down the side
  153. speaker replacement polarity
  154. Is it necessary to repair a puncture hole in a heavily doped speaker?
  155. rectifier tube
  156. Help reading screen grid values in 6L6 amp
  157. 1971 Superlead, caps O.K?
  158. princeton reverb trem issues
  159. OMG!...Another Bias Qutestion--Single Ended Amps
  160. reverb tank quest?
  161. Running a 5Y3GT in a 5F4 Super?
  162. DRRI - pulling v1 12ax7
  163. AMp Building Tool Question
  164. Rivera with stock US voltage goes to EU
  165. 3M Pot needed for AB763 Deluxe Reverb
  166. Bad Cat Hot Cat Biasing Question
  167. Modified Crate Palomino V8 Humm Buzz Noise-help
  168. 61 GA40 Tremelo
  169. Insulating a cab?
  170. Marshall JCM 2000 DSL 401 COMBO speaker load question
  171. why are Mullard ecc-83's favoured for old Marshall amps?
  172. How to add a bias pot to my old amp
  173. How to add bias pot to my Traynor YBA-1; no kidding...
  174. Changing tubes?
  175. Pro Reverb Question
  176. JJ or SED Winged "C" EL-34s for a Hot Cat
  177. Mesa Maverick Question
  178. Tube noob question...
  179. GT Data Sheets ??
  180. Pulling tubes adding cabs.
  181. best speakers for 73 Pro Reverb? using single coils only
  182. Sputtering 6L6
  183. Make a Linear Pot act like Audio Taper?
  184. Input triode on REALLY old Fenders
  185. Mesa studio calibur fixed bias?
  186. Can mic wire be used for speaker wire?
  187. Who Manufactured Pinnacle ECC83s?
  188. Silverface SR conversion to BF Specs + 100 ohm bias resistors?
  189. Tube Compatability
  190. Marshall plastic feet
  191. RFT ax7 report
  192. Static from input jack.
  193. Question about Impedance
  194. Rocker 30 Impedence/Performance question...
  195. Cathode Resistor Biasing Question
  196. 4 ohm 10" Speakers
  197. volume knob down but still have volume
  198. Fender Twin Reverb Attenuation??
  199. Homemade Orange Clone F.A.C. question
  200. Line output and instrument cable?
  201. Extension Cab w/o extension jack?
  202. Do You Leave Your Amp Plugged In?
  203. Will working on a solid state amp kill me
  204. Ultralinear Twin - clean machine
  205. Amp parts, Mouser out of stock on caps? Other sources?
  206. NOS filter caps... is this a good idea?
  207. Comment on this Technology?
  208. Poor Man's Speaker Switcher?
  209. Alembic F2B question
  210. JJ EL84 vs. NOS Mullard
  211. Individual bias controls on each tube?
  212. Ceriatone 5E3 head kit...
  213. Vintage Sound Amplifiers
  214. Mail-away Amp Tech
  215. Hey You Tube Heads, More Tube Lore
  216. 8 or 16 ohm speakers.
  217. Hot Cat Amp - A/B/Y Switch For Channels??
  218. Help: '73 Fender twin reverb problem/L.A. tech needed
  219. Super Reverb - reverb pan?
  220. Safe to run a greenback 100w cab?
  221. ONE tube is redplating in Cathode Bias'd amp...Help!
  222. Coil Rub Confusion
  223. Dumbish reverb question
  224. Celestion Gold cone cry question....
  225. Amp tech in far North Burbs of Chicago.
  226. fuzzy/friction sound to my vintage speaker
  227. Reverb Tank Input Impedance Matching
  228. Tracking down a short
  229. Parts: Suggestion for a 1/4" speaker jack and plug?
  230. JCM 800 is Dead!
  231. cap can, princeton, questions
  232. Getting the most out of my rig...
  233. Breaking in speakers/tubes on a new amp? TRRI Related
  234. Hiwatt Help, understanding this oddity...
  235. Need help adding bias pot to '63 VV RI
  236. For those who understand tube testers...
  237. Speaker Recommendation please?
  238. Decible Math
  239. bias problem with blackface pro reverb
  240. Allen "Raw" knob?
  241. Bias caps backwards???
  242. Ampeg J-12R reissue advice needed
  243. Any cure for combo cab buzz?
  244. Plate resistor - carbon comp or carbon film
  245. Voltage browning out?
  246. Marshall Volume Question
  247. Biasing my Fender amps
  248. Best speaker for home use DRRI?
  249. building the best backline "house" amp
  250. Changing tone of the reverb on a Pro Reverb