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  1. ART DR-X Distortion Help with Diagnosis
  2. Vintage style Tube mic pre want to build help
  3. trainwreck express master volume
  4. Hiwatt Maxwatt B60/12
  5. Conn541 amplifier schematic needed
  6. Grid or cathode bias 5C1
  7. Anyone have a Fishman Loudbox schematic to share?
  8. Extract Preamp Section from Fender Frontman 212R
  9. weird R-C coupling
  10. Amp Maker WF-55 -- Have you built it? Did you like it?
  11. what are good AC values for B+ ripple at 480VDC
  12. Baldwin Panoramic Tone Converter
  13. How support Noval Socket for Pedal
  14. Less than 1w practice guitar amp Tube Valve
  15. Cannibal guitar amp project...
  16. Ibanez AEQ SS Repair
  17. 1979 Pro Reverb problem
  18. Oscillation Mystery Solved!
  19. anyone has a DBX 223XS can help me?
  20. Marshall AVT20 footswitch?
  21. behringer Inuke 3000 failure
  22. 60's JMI VOX AC15 tremolo
  23. Suzuki Omnichord Om-27: only makes a low hum-noise
  24. Badcat Guitar Amp schematic needed
  25. Peavey TNT 150
  26. Ampeg J12T isuues
  27. EL84 puzzle
  28. Build Troubleshooting
  29. DC Cathode Follower Mixer
  30. Sub miniature pentode push pull design help
  31. Class A question
  32. Modelling Two Amps in One - Tone Switching
  33. Marshall JMP 77 MV 100W amplifier HT issues
  34. Getting more crunch out of 5F1 clone.
  35. Hey Enzo!!
  36. buzzing in peavey tko 115 help please
  37. Budget Bud?
  38. Space Charge tubes - and uses
  39. Obsessive-Compulsive Purchase
  40. Troubleshooting a 6v6 plexi
  41. Marshall Lead and Bass SS JMP 2195 issues
  42. basic potentiometer help please
  43. Volume Pedal + Amp Board = ?
  44. AB Systems 410C amp mysteries
  45. Can I use 1 op amp with channel switching preamp
  46. Trying To Understand This Power Supply Design
  47. Master Volume stuck on full Marshall 101cfx
  48. Amplee Thunder vintage 35, guitar amp
  49. Dynacord Echocord Mini, no echo!
  50. Impedance Mismatch BurnUp Danger Question
  51. Help with modification on sound effects board
  52. about V73 Maihak amp
  53. Building a crossover for a acoustic mic/pickup
  54. Help with a tube guitar amp for my father, schematic sanity check
  55. Low tech Bass guitar amp/speaker
  56. Splitting an electro-acoustic guitar signal
  57. Help with identification
  58. Need help to design new amp, payed $$$
  59. Mono/Stereo lines and adapters - a few questions...
  60. Peavey 8.5 power amp.
  61. Minimalistic Bare Bones 2 Transistor Guitar Preamp
  62. DIY guitar amp
  63. Idea Shaping and Guidance Needed
  64. Grid voltage Pultec 1A
  65. tube amp capacitor voltage ratings help please
  66. Omnichord Repair
  67. Pultec low freq pops
  68. SM57 to 100K input tube premap impedance
  69. Input Jack = ground loop??
  70. Heeeelp:( 70's plexi build
  71. Need some amp help please! No sound!
  72. SilverTone 1474 First stage lots of Hissss?
  73. Studer Console Output Transformer
  74. Farfisa Compact Deluxe
  75. Yet another valve USB/MIC/LINE mixer/preamp.
  76. EL84 as a mic preamp
  77. Building a Faraday Cage - which frequencies do I want to block?
  78. 6x9 instrument speakers almost extinct
  79. 6l6GB not finding alot of guitar amps that run these..
  80. Blue Robbie heater problems
  81. AC15 EL84 output transformer replacement or DIY
  82. Phase inverter distortion
  83. IGOR Red board Sontec Clone - need Schematics please
  84. LM7809 voltage regulator quick question
  85. New Member looking for opinions on my design
  86. Crossover for Fane PRO 18-800P replaced in Martin S18+
  87. Poor little GZ34 F32 B6H4
  88. Lee Jackson xla-1000 squealing
  89. High voltages on Fender 5E5 home brew
  90. AX84 is about to close
  91. 6v6gt output transformer question, help please
  92. Behringer EP 4000
  93. Is this parasitic oscillation (and what do I do about it?)
  94. Limiting inrush current
  95. New small amplifier build
  96. Issue with a home built amp
  97. Troubleshooting the dB Technologies Basic 200 Active Speaker
  98. Clamping pre-amp voltage output
  99. Repairing Samson Servo 300
  100. Please help how to measure/guage output of guitar preamp
  101. "Active" Marshall tone control
  102. Post PI Master or Tone with feedback
  103. Repairing a hissing microphone preamplifier
  104. preamp with 5 or 7 band tone control.
  105. Please help, inductors keep dying
  106. Safer VVR circuit?
  107. Rivera R30-112 repair
  108. 220 to 110 conversion Peavey Bandit 112
  109. Pignose 7-100 repair
  110. Add more gain to Home built Guitar Amp
  111. Weird tube Bass Preamp
  112. Joe Meek Racal Equaliser Help
  113. Simple guitar preamp with 1 transistor
  114. Schematics needed! Randall Warhead G2 Preamp.
  115. Mixer Repair Warning!!!
  116. Who can design and help build a fine studio mixer?
  117. Bass amp diy
  118. EL 84 voltage
  119. Can I use two reverb tanks?
  120. circuit modification, help Please
  121. big sound from many small amps?
  122. A master volume control capacitor question
  123. phono amp to guitar amp pp EL84
  124. Look over my mic preamp schematic please?
  125. Distortion (2th order) get smoother with more stages?
  126. Newbie Pedal Board PSU Question
  127. Yamaha keyboard one channel feint to dead
  128. Broken input jack?
  129. Sound without tone stack?!
  130. mono amp ideas please
  131. adjusting mic circuit for guitar help please
  132. DIY Effects units/pedals where to start
  133. Calculating Plate current
  134. Deluxe Reverb Kits
  135. Cascode "screen" dissipation
  136. peavy capcitor identification help please
  137. simple amp building question help please
  138. Crate GX65
  139. Power Amp - Problem with DC levels
  140. Head build styles
  141. Vox AD120VT
  142. Lackluster Bass Amp Volume from Class D Build
  143. help with voltage figure for mic pre-amp circuit
  144. Webcor 4903 Amp Conversion
  145. Need help with noise troubleshooting
  146. Scaling the Melodier
  147. 12ax7 output issue on old sunn scepter (similar to dynaco MKIII)
  148. peavey TKO 115
  149. Need Help Deciphering Peavey 5150 Mod
  150. Predicting high frequency cutoff of low cost guitar pickups
  151. Deluxe Reverb AB763 OT selection help
  152. Latest project usb and mic valve mixer for a mobile disco.
  153. Leslie combo amp: Loud mains hum right out of the box
  154. Carlsbro Scorpion 30w combo
  155. Still confused about speakers
  156. 5e3 low sound.
  157. Best Sounding FET for preamp input stage
  158. Acoustic guitar preamp build....hopefully!!
  159. Fender Frontman 212R distorting even on clean channel.
  160. Im looking for some help with channel switching
  161. Pin 4 Screen connection on 6L6GC PP Guitar amp drops B+
  162. Fender 5F1 champ build.
  163. Build advice, JTM45 or Fender Deluxe
  164. Overheated tube socket?
  165. Suggestions for preamp ........
  166. Tube Guitar Amp Building Classes
  167. Ampage.org
  168. Champ 5F1 buzz/hum problem.
  169. JTM45 Metro Amp Mod Question
  170. Transforming 4 track Minidisc recorder to preamp/mixer for studio recording
  171. Clipping Diodes TS9
  172. Dynavox VR70
  173. Mesa Boogie Mark II c+ schematic & experience
  174. Bass Amp Idea
  175. Line out to instrument input level attenuation
  176. Problem with my ampeg portaflex pf-350
  177. Vintage Elka Reverb III
  178. Will these replacements work (OPAMPS)?
  179. JTM45 Metro amp problem
  180. can my amp cope?
  181. Electret Microphone Circuit for Accordion
  182. anyone tryed 6V6 pp ultra linear
  183. Quilter Amps
  184. Taming highs with a capacitor?
  185. 1963 Moody Tube Amp
  186. Could I get a bit of QC on my amp design?
  187. Fender early 1960s Bandmaster Recap
  188. Modular Tube Preamps/Power Amps/Cabinets
  189. largest plate voltage on a 12AX7 question
  190. tube amp direct line out
  191. Clean and Dirty switch in Single Channel Amp?
  192. Marshall bass 100 solid state transmitter
  193. Designing a battery guitar amplifier
  194. EL84 driver stage
  195. New amp build grounding question
  196. Basic question about electron flow to tube grid
  197. Guitar Grounding (Metal Control Plate)
  198. SS Bass Preamp Pedal - Some Questions
  199. Has anyone used London Power scaling
  200. Dynacord MV120 advice?
  201. Advice on < 30 watt EL84 new build
  202. Rack Compressor LED Bar Display Troubleshooting
  203. DC Cathode Follower Mixer
  204. battery amplifier, searching an IC
  205. Silvertone 1482 Capacitor replacement
  206. WEM Dominator MK3 amplifier. Lamp and Transistor Enquiry
  207. 12au7 driver
  208. Hammond AO-39 info needed
  209. Chinese Iron
  210. Klark Teknik DN22 EQ
  211. what amps do i need for this speaker config?!?
  212. line out controller
  213. Old Japanese Tube Amp Ground Wiring Woes
  214. Transformer for guitar pre balanced output
  215. Quick Channel Switch Design Question
  216. Replace EL34 in the powersection with MOSFET?
  217. 5F1 First Build Issues, need guidance
  218. solid state amplifier making noise!
  219. Single 2n3904 Channel Switching Guitar Preamps, 5 circuit ideas shown, please comment
  220. Roland JC120 Distortion
  221. Field test a S.S. rectifier
  222. hybrid output
  223. Is this design ok? Switch from distorted to clean channel on Electra Type Distortion
  224. Traynor YBA-1a Bias issue
  225. Is asymmetric clipping in distortion ok for your amp?
  226. Advice on Guitar Amp, should I get rid of it
  227. Stand-by Switch reduce their useful life
  228. Ibanez TSA-15H Power cuts out
  229. loud hum from amp
  230. Mesa Boogie Nomad 45 tube amp repair question
  231. Oscillation in Tube Guitar Amps
  232. Point-to-point wiring vs. PCBs
  233. Help! Bass amp making airplane noise. Unresponsive otherwise
  234. NOT the best distortion, but perhaps the simplest.
  235. Roland Jazz Chorus 120
  236. does anyone know of a el86/6cw5 quad amp ?
  237. SE10 by ORGASM MACHINES (single ended el34 guitar tube amp)
  238. Marshall 3520 Bass Amp -- Capacitor Question
  239. Earphones
  240. How to build a simple, low power guitar amp
  241. Dynacord Echocord S61, S62 and S65
  242. peculiar PA tube amp conversion
  243. Dynamic Clipping Using a Transistor for Guitar Distortion
  244. Conceptual question about switching tonestacks in circuit. Channel switching amp
  245. Sovtek EL84M
  246. Marshall Ministack great with stock speaks rubbish with anything else! Why?
  247. Puzzled about input impedance of this guitar distortion circuit
  248. LND150 effects loop not working properly, need help.
  249. AX84 - Cathode resistor replacment
  250. Onboard bass preamp, please help with schematic

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