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  1. Anyone know what a 5687 tube is.
  2. Preamp tube flashes at turn on?
  3. A somewhat off topic question...
  4. Changing the tubes in a Super Reverb RI.
  5. Amp Chassis Source
  6. Question on my real mullards
  7. Using Speaker Out as Line Out
  8. Opinions on the E-H 6L6GC's?
  9. Tell me about these tubes..
  10. 6550 for 6V6GT. Will it blow up?
  11. Wiring a lamp to the heaters...
  12. When all pots go scratchy (not due to bad pots!)
  13. Good amp tech
  14. EF86: philips, siemens or mullard
  15. Raytheon and Sylvania 12ax7 differences
  16. Need Help Replacing Tremelo Bug
  17. generic 1/4" adapters for speaker cable use?
  18. Negative Feedback (?)
  19. Pentode, Tetrode, Triode, Diode... Ode to 'Odes
  20. Best Filter Caps for Marshall?
  21. DRRI question
  22. Stupid question, I forget...
  23. Marshall JTM 30 Bias Adjustment
  24. Cap Cans versus Single Caps
  25. Vibrochamp issues
  26. Cooling down a hot amp...?
  27. Bias range for JMP style amp
  28. Amp tech in NYC?
  29. Rectifier Education.......can u help pls?
  30. Good NOS 6K11 for Ampeg V-4B?
  31. What should I do with this?
  32. Phase inversion technical question
  33. speaker cable question
  34. how many watts would this be?
  35. spare fuses
  36. Diezel Herbert Tube Question
  37. Please see my "Bare Wires" thread in G&A Section
  38. Hey GUYS..DID I SCORE, OR NO?
  39. Mesa Mk 111 Bias Problem
  40. Is Sprague the ONLY electrolytic?
  41. 5U4 --> 5Y3 in a Recto?
  42. Tube ID
  43. 12at7...?
  44. Adding a bias pot
  45. Upgrade transformer in Deluxe Reverb to accept 6L6 power tubes
  46. Can I run these? 5R4GY & 5R4WGA
  47. Noob output trans question.
  48. Is it possible my Bassman 6G6-B wants 8 ohms?
  49. Raytheon 12ax7a.............. Wow!!
  50. YAMAHA G100 410: Intermittent problem
  51. amp ohms?
  52. Cap Identification help please.
  53. Tubes in 5F6-A Circuit
  54. soldering station
  55. Egnater Nov 18th seminar
  56. Speaker Leads - Pos Or Neg To Tip Or Sleeve ?
  57. HELP: My Jubilee 2553 hums when switched to half power
  58. How to wire 8 ohm tap from OT?
  59. Where to buy hi-fi tube amp kits?
  60. Leslie 147 Tube Replacement
  61. Fender Princeton volume pot issue
  62. OK to use a tube w/a partially broken guide?
  63. Ok, what did I do? Sovtek head blowing mains fuse..
  64. Tonemaster help
  65. Can we talk about speaker distortion
  66. How hot do tubes get?
  67. Where do you get your tubes?
  68. Bias troubleshooting - 2 questions
  69. Can old caps cause a loss of clarity?
  70. Tube loose from base should I superglue?
  71. Tube Glow question
  72. Tweed Super Bias
  73. Amp Boosting by a Core One Coiled Cable?
  74. What the hell is going on?
  75. Amp Diagnosis Needed
  76. Different chinese 12AX7 plate colours
  77. 12AX7 ID Valvo or Matsushita ?
  78. Are NOS 6L6's all dried up?
  79. Simple effects loop?
  80. Reverb makes hum and feedback
  81. How To:Diag. OPT failure?
  82. reverb noise in twin bad capacitor
  83. Run amp at 4 ohms or 16 ohms?
  84. Tube ID: Is this a genuine Mullard
  85. Tube ID: another Mullard question
  86. Amp Gurus, Rocca, FJA - Mesa Rocket 44 Hum
  87. Quick/Dumb question
  88. 6L6's vs. EL34's...what's the difference...
  89. Can I use a 5U4 in my Vox?
  90. Need Help Solving Noise Issue in my 18watt TMB
  91. Heritage G12H pin/turret Problem
  92. Epiphone Valve Junior Tube Replacement question
  93. Speaker Wire (Inside Cab)...16AWG?
  94. Ef86?
  95. Wiring Diagram for two jack series wiring??
  96. Microphonic 12ax7
  97. Tube Socket Troubles?
  98. Got the Motorboat Putt-Putting around in my amp
  99. 12ax7 Id?
  100. Vox AC30 Reissue...
  101. Trouble shooting my amp
  102. 1964 Pro Amp??????
  103. '53 Princeton--no volume
  104. Tube Newb bias question
  105. HRD tweaking questions
  106. More 12ax7 ID
  107. Help me with my Hot Rod Deville man!
  108. Making A Reverb Unit Out Of A Reverb Tank (question
  109. Listen to this clip and tell me whats wrong
  110. JCM900 inside pics needed...
  111. Crackling noise and amp cuts out and in
  112. AC30 annoying hum?
  113. Seperate Cathode Resistors for KT66
  114. 6V6 Tube recc. for El34 swap - JJ? Tung-Sol?
  115. Best NP 6L6's?
  116. amp tech that could instal effects loop deluxe reverb ?
  117. new tubes...burn in?
  118. I need a chassis layout for a Fender Concert (Rivera era)
  119. Rocommend tubes for my Fender Concert (rivera era)
  120. Who makes Mesa's branded tubes?
  121. Laney VH100R Questions - 5881 Sovtek
  122. mid pot on deluxe reverb
  123. Noob tube question re Victoria Sovereign
  124. Dumb tube question... English GEC KT66
  125. Output tube matching jack
  126. HELP! I've never had to replace tubes before!
  127. mid mods for a DRRI ?
  128. Vox Ac 30 clone transformer/choke opinion
  129. Epiphone valve jr. OT mod
  130. Odd sound when I play a high E......
  131. How does the EL34 Shiva pull 80 Watts?
  132. Mesa STR 416 6CA7/EL34 ?
  133. Toughest New EL-34 ?
  134. My Traynor Bassmate caught fire
  135. I want to rebuild my ep-2 echo plex need help
  136. Crackling Noise, A Power Tube With Bright Orange Blob...
  137. Testing an Output Transformer for a short
  138. Need help with headroom JTM45RI
  139. 6V6 Tung-sol or jj's?? or other new tubes
  140. Diagnose problem with my Deluxe
  141. I Need Help*******(JJ users, I have a question)
  142. another (easy?) ohms question
  143. DRRI OT-Who makes the best?
  144. Couple of Tube Questions...
  145. 6W6? exact replacement of 6V6?
  146. Laney VH100R Update!!!
  147. Double Deluxe kits?
  148. Dumb Question On Xtc 101b
  149. Footswitchable piezo horn?
  150. Diagnose this...
  151. Can you run an 8 and 16 ohm speaker together??
  152. Recto change, re-bias the amp?
  153. A lil effects pedal help (ross phaser)
  154. Can I use GEC kt66s that ain't matched in my jtm45?
  155. external speaker out to direct box -- bad for amp?
  156. Raytheon short plate...
  157. Found a few tubes..I wonder are they recto's?
  158. What determines an amps volume?
  159. pulling ONE power tube in a 2-power tube amp
  160. help-- modding an ampeg jet j12t
  161. 5ar4 and ef86 settings needed for a hickok
  162. Silver plate 12AX7 ?
  163. Bad Cat Cub, blows fuses
  164. What tubes for my Traynor YCV80?
  165. Princeton replacement speaker
  166. How could I use my reverb circuit as an effects loop?
  167. RockyTop JTM45 Jumpering . . blew fuse ?
  168. Hiwatt DR504 12AX7's
  169. Question for you amp gurus
  170. How do I safely remove the bell cover from my Alnico Blue speaker?
  171. A good, inexpensive, soldering station for doing amp mods?
  172. Broken input jacks
  173. 6L6GC's: Ruby Tubes?
  174. Vintage Fender 4ohm to 8ohm?
  175. Need help
  176. Question about De-Modding a "Rich Mod" or PPIMV
  177. What other choices do I have besides 6L6 power tubes? Why should I choose them?
  178. On my next Amp service
  179. Whats the best way to change a 2x12 cab w/ 2 16 ohm to 8 ohm?
  180. TAD 6L6GC Vs SED Winged C
  181. Dead 'Verb on my Trem-O-Verb
  182. OT brands - price/performance difference?
  183. Are there any good stereo amp plans out there?
  184. GT Soul-O 45-signal cutting out or amp humming loudly
  185. BFDR Hum
  186. Tone King Imperial Bias Question/Issue
  187. speaker and amp impedance
  188. Carr Mercury experiment: 6L6 vs EL34 vs KT66
  189. Retubing=Less Volume - Why?
  190. Vox AC50 advice
  191. Kustom Hustler amp question
  192. Classic 30 (head) minimum impedance?
  193. 12at7 in V4 in blackface amp?
  194. Blues Jr. tube question
  195. Weber books
  196. amp questions
  197. Marshall question - what are the preamp tubes for?
  198. Fender DRRI was dropped and it ain't happy
  199. Brown based Marshall EL34 any good?
  200. Help...question about Oliver Amps
  201. VERY low output on my marshall 1973 50 watt help!
  202. speaker motor based attenuator
  203. Using a resistor to change speaker ohms?
  204. Traynor Custom Reverb input gain mod q's...
  205. Is Speaker Dope Rubber Cement?
  206. pro reverb tube questions
  207. Why does my Reverb pedal have no effect?
  208. john suhr OD-100 Standard mod to...Classic???
  209. Blackface Family Ties: Three Wayward Deluxe Reverbs
  210. applying tolex
  211. Who Makes Nice Marshall Cabinets?
  212. capacitor discharger
  213. Rebias necessary for rectifier swap?
  214. Did some maintenance, now a problem.
  215. Bias Question or better..no bias question?
  216. Silverface Super Reverb Problem
  217. How much experience/knowledge before modding?
  218. 6l6GC / KT-66 (question)
  219. EL-34 Bias ?
  220. wiring speakers for ohms? HELP!!
  221. IT-12 Scematic/Manual Needed
  222. Is it OK to mix Low watt and High watt speakers?
  223. Baffle board thickness?
  224. Tungsram 12AX7's.....
  225. Doug's Tubes
  226. KT-66 / question
  227. My amp just died (??) help!
  228. Dr. Z MAZ 18 won't power up - ideas?
  229. Solid State rectifier
  230. Breaking in a guitar speaker on a stereo?
  231. Speaker 'clicks' or 'snaps' when pushed?
  232. How do you use the line out of an amp head with another power amp?
  233. Rivera, replace which valves?
  234. Best place to buy KT-66's?
  235. first time for everything...Time to replace some tubes..
  236. Wierd Amp Crackle - Clips
  237. 5U4 vs 5Y3 rectifier tubes
  238. Why Do People Sometimes "Under-spec" OTs?
  239. Keeping dust out of open sockets?
  240. Need cab recovered, NW OH, NE IN, S MI
  241. can anyone recommend a good scope?
  242. End Date for Production of RCA "Blackplates"?
  243. Gibson GA-30 Help
  244. EL84 screen voltage compared to plate voltage
  245. Testing Capacitors for DC Leakage
  246. Question about 5V4G recifier tubes
  247. sound bleeding into both channels on amp
  248. Static in JCM800...
  249. Lead Dress??
  250. Cracked Circuit Board