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  1. Bass tube preamp Project.-
  2. help in installing a preamp in my diy mixer
  3. ADA flanger not working properly
  4. reverb for a 5F1
  5. repairing broken gallien kreuger - help!
  6. Tube combo amp for nylon electric
  7. Fender Sunn SR-30a - Noise Issue.
  8. Cause of soft clipping in the germanium Fuzz Face?
  9. Fender Blues Jr. Oscillation Coming out of Standby
  10. Flapping and Buzzing Woofer
  11. Mesa Mark II footswitch circuit draws from heaters, unbalanced and noisy results
  12. Sarco V18-22 tube amplifier
  13. How to test germanium output transistors
  14. 5C1 Scatch build (voltages ?)
  15. ELK VIKING 103 Guitar amplifier
  16. OTL amps for guitar duty
  17. New guitar amp build and schematic help
  18. Choke current at startup exceeds rating? :(
  19. Mixing Console - Coupling Cap Values
  20. Tube amp blaring noise when i turn the stand by switch on!!!
  21. PT, OT, Choke Placement
  22. Project27 adding reverb and overdrive
  23. signal split
  24. Question re Guitar Amp Power Supply
  25. Guitar preamp
  26. I need suggestions for a guitar amp kit
  27. Bendix 6384 Fender Showman Mod
  28. Adding an FX loop to an acoustic amp
  29. Cascode LTP mic preamp
  30. Acoustic guitar preamp based on Fender
  31. Help needed on DIY TL074 mixer
  32. Hammond H-100 FX loop best location
  33. Suggested Mods for Peavey Butcher - Negative Feedback Loop Tone control?
  34. Vox AC 30SS Vibrato problem
  35. Hammond Organ 7591 Bias Adjustment
  36. Improvisation on five handmade synthesizers.
  37. Edcor XPP for EL84 amp
  38. Magnetic Pickup for Cello - Idea/Question
  39. Looking for rack gear
  40. Egnator Renegade 65
  41. Crate XT120R Issue
  42. Input transformer for Shure M63
  43. need help with passive volume and tone
  44. Bass amp with Audiopower DPA-600/F (sad story)
  45. Phonic PWA 2400 (manual, experience?)
  46. Mod TDA7429P Amp Board
  47. Marshall VS30R
  48. Tesseract Guitar Practice Amp
  49. Preamp for Triaxial Piezo Soundboard Transducer
  50. Need a new output transformer, checkmate 50!
  51. Laney Supergroup MK1 restoration
  52. Solid State version of a VOX AC-30 Guitar Amp
  53. Output Tube Into Op Amp
  54. Standby switch buzz?
  55. Peculiar balanced output connection?
  56. I need help understanding what I really need in a Tube Amp
  57. Marshall JCM800 2204 clone, need help
  58. Line Level Splitter for Amp FX Loop
  59. Beginner questions
  60. tube tremolo schematic for SE
  61. Hartke LH500
  62. Asym oscillation BEFORE modified Phase Inverter in Mesa Mark II
  63. Question on replacing faulty amp.
  64. PV Nashville 400 'Metzger' Reverb Mod
  65. using darlington configuration for increase gain in guitar distortion circuit
  66. Ovation K-6427 PVMS PA Amplifier
  67. Egnater Rebel 20 MKII - 'classic/high gain' switch - how does it work?
  68. Passive Low Cut, High Cut, Bandpass Filter
  69. I've seen two factory guitar amps asking to place 8ohm speaker on 4ohm tap
  70. help with limiter suitable for guitar amp.
  71. Klemt echollette m40 hum and feedback
  72. Hi All, Newbie at Audio, I am so desperate
  73. Mid Scoop suggestions ?
  74. Need help with tube reverb circuit noise
  75. Guitar Help needed.
  76. Solo schematics for DIY mixer
  77. Peavey PV1200 amp
  78. Maestro Rhythm King - Schematic?
  79. DIY 15/30W Amplifier
  80. Practice amp modification (Dean Markley k-15x)
  81. Identfying old RCA tubes
  82. REQ: Bogen HTA125A Schematic
  83. Soul Food Preamp into Mullard 3-3 power - good idea?
  84. Converting Hammond LR A (ex HR-40) to Hifi Mono Amp
  85. Webcor 166-1
  86. Weak Reverb in a Gibson Scout GA 17 RVT
  87. AKG C414B-ULS with low output
  88. ART DR-X Distortion Help with Diagnosis
  89. Vintage style Tube mic pre want to build help
  90. trainwreck express master volume
  91. Hiwatt Maxwatt B60/12
  92. Conn541 amplifier schematic needed
  93. Grid or cathode bias 5C1
  94. Anyone have a Fishman Loudbox schematic to share?
  95. Extract Preamp Section from Fender Frontman 212R
  96. weird R-C coupling
  97. Amp Maker WF-55 -- Have you built it? Did you like it?
  98. what are good AC values for B+ ripple at 480VDC
  99. Baldwin Panoramic Tone Converter
  100. How support Noval Socket for Pedal
  101. Less than 1w practice guitar amp Tube Valve
  102. Cannibal guitar amp project...
  103. Ibanez AEQ SS Repair
  104. 1979 Pro Reverb problem
  105. Oscillation Mystery Solved!
  106. anyone has a DBX 223XS can help me?
  107. Marshall AVT20 footswitch?
  108. behringer Inuke 3000 failure
  109. 60's JMI VOX AC15 tremolo
  110. Suzuki Omnichord Om-27: only makes a low hum-noise
  111. Badcat Guitar Amp schematic needed
  112. Peavey TNT 150
  113. Ampeg J12T isuues
  114. EL84 puzzle
  115. Build Troubleshooting
  116. DC Cathode Follower Mixer
  117. Sub miniature pentode push pull design help
  118. Class A question
  119. Modelling Two Amps in One - Tone Switching
  120. Marshall JMP 77 MV 100W amplifier HT issues
  121. Getting more crunch out of 5F1 clone.
  122. Hey Enzo!!
  123. buzzing in peavey tko 115 help please
  124. Budget Bud?
  125. Space Charge tubes - and uses
  126. Obsessive-Compulsive Purchase
  127. Troubleshooting a 6v6 plexi
  128. Marshall Lead and Bass SS JMP 2195 issues
  129. basic potentiometer help please
  130. Volume Pedal + Amp Board = ?
  131. AB Systems 410C amp mysteries
  132. Can I use 1 op amp with channel switching preamp
  133. Trying To Understand This Power Supply Design
  134. Master Volume stuck on full Marshall 101cfx
  135. Amplee Thunder vintage 35, guitar amp
  136. Dynacord Echocord Mini, no echo!
  137. Impedance Mismatch BurnUp Danger Question
  138. Help with modification on sound effects board
  139. about V73 Maihak amp
  140. Building a crossover for a acoustic mic/pickup
  141. Help with a tube guitar amp for my father, schematic sanity check
  142. Low tech Bass guitar amp/speaker
  143. Splitting an electro-acoustic guitar signal
  144. Help with identification
  145. Need help to design new amp, payed $$$
  146. Mono/Stereo lines and adapters - a few questions...
  147. Peavey 8.5 power amp.
  148. Minimalistic Bare Bones 2 Transistor Guitar Preamp
  149. DIY guitar amp
  150. Idea Shaping and Guidance Needed
  151. Grid voltage Pultec 1A
  152. tube amp capacitor voltage ratings help please
  153. Omnichord Repair
  154. Pultec low freq pops
  155. SM57 to 100K input tube premap impedance
  156. Input Jack = ground loop??
  157. Heeeelp:( 70's plexi build
  158. Need some amp help please! No sound!
  159. SilverTone 1474 First stage lots of Hissss?
  160. Studer Console Output Transformer
  161. Farfisa Compact Deluxe
  162. Yet another valve USB/MIC/LINE mixer/preamp.
  163. EL84 as a mic preamp
  164. Building a Faraday Cage - which frequencies do I want to block?
  165. 6x9 instrument speakers almost extinct
  166. 6l6GB not finding alot of guitar amps that run these..
  167. Blue Robbie heater problems
  168. AC15 EL84 output transformer replacement or DIY
  169. Phase inverter distortion
  170. IGOR Red board Sontec Clone - need Schematics please
  171. LM7809 voltage regulator quick question
  172. New Member looking for opinions on my design
  173. Crossover for Fane PRO 18-800P replaced in Martin S18+
  174. Poor little GZ34 F32 B6H4
  175. Lee Jackson xla-1000 squealing
  176. High voltages on Fender 5E5 home brew
  177. AX84 is about to close
  178. 6v6gt output transformer question, help please
  179. Behringer EP 4000
  180. Is this parasitic oscillation (and what do I do about it?)
  181. Limiting inrush current
  182. New small amplifier build
  183. Issue with a home built amp
  184. Troubleshooting the dB Technologies Basic 200 Active Speaker
  185. Clamping pre-amp voltage output
  186. Repairing Samson Servo 300
  187. Please help how to measure/guage output of guitar preamp
  188. "Active" Marshall tone control
  189. Post PI Master or Tone with feedback
  190. Repairing a hissing microphone preamplifier
  191. preamp with 5 or 7 band tone control.
  192. Please help, inductors keep dying
  193. Safer VVR circuit?
  194. Rivera R30-112 repair
  195. 220 to 110 conversion Peavey Bandit 112
  196. Pignose 7-100 repair
  197. Add more gain to Home built Guitar Amp
  198. Weird tube Bass Preamp
  199. Joe Meek Racal Equaliser Help
  200. Simple guitar preamp with 1 transistor
  201. Schematics needed! Randall Warhead G2 Preamp.
  202. Mixer Repair Warning!!!
  203. Who can design and help build a fine studio mixer?
  204. Bass amp diy
  205. EL 84 voltage
  206. Can I use two reverb tanks?
  207. circuit modification, help Please
  208. big sound from many small amps?
  209. A master volume control capacitor question
  210. phono amp to guitar amp pp EL84
  211. Look over my mic preamp schematic please?
  212. Distortion (2th order) get smoother with more stages?
  213. Newbie Pedal Board PSU Question
  214. Yamaha keyboard one channel feint to dead
  215. Broken input jack?
  216. Sound without tone stack?!
  217. mono amp ideas please
  218. adjusting mic circuit for guitar help please
  219. DIY Effects units/pedals where to start
  220. Calculating Plate current
  221. Deluxe Reverb Kits
  222. Cascode "screen" dissipation
  223. peavy capcitor identification help please
  224. simple amp building question help please
  225. Crate GX65
  226. Power Amp - Problem with DC levels
  227. Head build styles
  228. Vox AD120VT
  229. Lackluster Bass Amp Volume from Class D Build
  230. help with voltage figure for mic pre-amp circuit
  231. Webcor 4903 Amp Conversion
  232. Need help with noise troubleshooting
  233. Scaling the Melodier
  234. 12ax7 output issue on old sunn scepter (similar to dynaco MKIII)
  235. peavey TKO 115
  236. Need Help Deciphering Peavey 5150 Mod
  237. Predicting high frequency cutoff of low cost guitar pickups
  238. Deluxe Reverb AB763 OT selection help
  239. Latest project usb and mic valve mixer for a mobile disco.
  240. Leslie combo amp: Loud mains hum right out of the box
  241. Carlsbro Scorpion 30w combo
  242. Still confused about speakers
  243. 5e3 low sound.
  244. Best Sounding FET for preamp input stage
  245. Acoustic guitar preamp build....hopefully!!
  246. Fender Frontman 212R distorting even on clean channel.
  247. Im looking for some help with channel switching
  248. Pin 4 Screen connection on 6L6GC PP Guitar amp drops B+
  249. Fender 5F1 champ build.
  250. Build advice, JTM45 or Fender Deluxe

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