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  1. Hum immediate when powering on
  2. stomp box with low impedance output
  3. BBE 362 NR Sonic Maximizer
  4. How do I limit tube supply voltage in the event B+ rises a little?
  5. Power output from a quad of 6V6?
  6. Missing reverb tank
  7. Preamp stage is going very asymmetrical. Why?
  8. Using mic pre for bass?
  9. Marshall 2210 amp repair
  10. High voltage Ultra-Linear
  11. non-electronic question about stiffening an SG clone
  12. DIY Spring Reverb circuit for old mixer setup
  13. Preparing my first low power guitar amp build.
  14. Hypex ucd2k and smps3k input level control
  15. Non-electronic question about guitar nut
  16. Matchless Lightning inspired build
  17. Tube guitar amp w/ mosfet CCS's, or class 2 operation, etc?
  18. Cheap Chinese amp modules any good?
  19. Wanted PT2395 delay PCB, and 2395 bits
  20. Help me choose a layout
  21. noisy foot switch; is there a fix?
  22. Simmons DA200S: Power Amp PCB
  23. DIY bass cabinet with 12" driver
  24. Push-Pull fixed bias and output power question
  25. Concerns about a 54 yr old Wurlitzer vacuum tube organ & safety of old electronics
  26. Alesis Ra-100 repair help
  27. Series 6N2P-EV don't lit, no sound.
  28. Guitar electronics question
  29. Advice needed on 100 watt Plexi clone build
  30. Buffer/Splitter Input Resistors Value?
  31. Input capacitors on guitar amps?
  32. Upright electric bass with amp and speakers built in.
  33. Micro bass amps, ToneHammer, littleMark, Shuttle, etc.
  34. DIY power amp suitable for bass.
  35. Anyone have experience with Delta 10's for bass speakers?
  36. Recommend me a tube pre amp for guitar
  37. add an XLR out to an amp that doesn't have it?
  38. Help Wirring Bass Guitar on board preamp
  39. Preamp Build Questions
  40. Guitar Bass Preamp Project
  41. SM Pro Audio V-Machine fan noise
  42. Build a Sunn Model T clone. Some questions. (EU)
  43. DIY preamp for amp head - general guidelines?
  44. Carvin legacy guitar amp build oscillation trouble
  45. 1954 BOGEN Bass Control
  46. HF Oscillations- How Do I Scope?
  47. Should (can) I go pentode instead of UL
  48. hiss/noise from jcm clone
  49. Guitar power amplifier MOSFET SE 5W
  51. Help with a vibe amp design
  52. Hammond AO-39 and AO-35 organ to guitar power amp conversion
  53. 1955 Gibson GA-20 should replace speaker; How?
  54. Quad of EL84 Screen Resistors
  55. Phantom power preamp for microphone
  56. Help choose tone stack
  57. Strat Squire pickup wiring questions
  58. Where can i find a replacement rocker switch for this guitar pedal?
  59. Behringer BX3000T Bass Head
  60. Ground currents
  61. Mann 100 PAR into guitar amp
  62. Happy so far on amp build project
  63. Click/pop with digitally switched effects loop
  64. Using Sweep Tubes for an Amp Build
  65. Does Plate Voltage Matter?
  66. Another Layout Proof Request - Marshall JCM800
  67. ax84 P1 Extreme Based 2 Channel Amp
  68. Classic 30 ohm load
  69. Tube amp chassis layout proposal
  70. DIY Vocal Compressor. Need Help !!!
  71. going solid?
  72. Add magnetic pickup to piezo pickup and preamp.
  73. Turning my Reel-to-reel into guitar amp.
  74. Instrument amp design goals
  75. Why did Fender do this ?
  76. Guitar preamp grid bias problem
  77. Help: MG100RCD Squeels (even with no input)
  78. Breadboard Bassman with runaway bias!
  79. 70V Line Matching Transformer - Good OT substitute?
  80. 420 Watts Speaker Not Really 420 Watts?
  81. What does this triode do in circuit?
  82. Guitar Amp Design
  83. Craig Anderton Buffer Board mods
  84. Build Ideas, Suggestions
  85. 18W homemade tube amp - Need advise
  86. compression/expansion control in guitar preamp
  87. 6gk5/6fq5 as input/preamp stage tube ?
  88. Isolation transformer question
  89. Couple Questions - Grid Stoppers and High Cut
  90. thoughts on heater wiring orientation
  91. Testing The Tube Guitar Amplifier
  92. JTM45 Bias Voltage moving around & bad distortion
  93. Connect plate after choke?
  94. blackstar stage 60 diy
  95. Question 'bout valve stompboxes
  96. 1965 Fender Deluxe Reverb - DI Connection?
  97. Buffer stage after Alembic F2b design
  98. Odd noises; guitar, environment, or amp?
  99. Fender reverb stand-alone
  100. master volume addition - Webster Chicago W830
  101. noiseless diodes setup choice
  102. Help choose a guitar amp to build?
  103. Weirdness with virtual CT on 6V heater tap
  104. Marshall 1974X
  105. Preamp Output Transformer
  106. Traynor YCL-3 Mark III Rebuild
  107. Sunn Sceptre Style Build
  108. Pepco (Pine Electronics) 801 Chassis Isolation Mod
  109. Fender Bassman AA864 build
  110. Gulbransen Organ Resurrection -
  111. Strange voltage reading
  112. Tube Preamp (my first)
  113. Marshall 18W TA
  114. 2002 Fender Twin Amp **Unusual Problem**
  115. Princeton 112+ Loose PCB Pot Shaft
  116. Greenchild Trbus Drive
  117. Can someone help me proof this layout?
  118. Laney Ironheart Irt30-112
  119. Hot Rod Deluxe issue, need advise!
  120. Guitar amp and bass amp
  121. Amp Build Not Working Correctly....
  122. Tuning a ported guitar cab
  123. Who made these early Peavey 6L6GC
  124. Inc / Dec Stomp Box
  125. Alnico magnet heat?
  126. Class AB amp trouble shooting (Scope shows square not sine)
  127. *small* Bass guitar amplifier
  128. 1950 Gretsch Electromatic Artist
  129. huge voltage drop after diode rectifier
  130. Questions on open baffles speaker.
  131. Crown DC-300A
  132. Bassman AA-864 Preamp Question
  133. Blackstar combo 20 that squeals
  134. 6V6/6L6 Switchable Guitar Amp
  135. input impedance of output transformer gibson ga20rvt amp
  136. career change for Jensen TR10 spkr
  137. gibson ga15rvt and ga20rvt amps
  138. why does 1 amp run hotter than another
  139. Guitar tube Pre-amp
  140. Power supply and transformer - good pair? (Hexaphonic guitar box)
  141. Mosfet driver
  142. Mullard 5-10 for guitar ?
  143. Rotary Speaker Cabinet Project
  144. General bass amp questionnaire
  145. Looking for someone to build an acoustic guitar preamp for me
  146. any tank circuit calculator?
  147. wires on an old humbucker
  148. LEM Baby Tape Echo PSU
  149. dual-tube SE
  150. 4-ohm 212 L-Pad
  151. Replacing Power Amp in Fender FM212R
  152. built a Sunn 2000S copy
  153. Heathkit A7 amp tube lineup
  154. Bass guitar wiring
  155. hybrid amp question
  156. New Bass Rig
  157. capacitor question
  158. ampeg ss70c 2x10 guitar amp
  159. Super Reverb AA270 reverb weak
  160. Uber Newb needs ideas for Cheap Bass Amp
  161. Fender PA100 - smoke -> no sound
  162. Dynacord Eminent II Biasing and tube change
  163. Hypex UcD2kOEM Bass Power Amp Project
  164. XLR Mixer Output to 1/4" Mono Amp Input
  165. Modify Bell 3030 into a stereo guitar amp project
  166. 'distortion' knob in schematic
  167. Easy HPF for bass cab?
  168. Ampex 620 For Use As Guitar Amp
  169. Amplifiers that exceed grid leak resistance
  170. Trace-Elliot Bipolar Bear
  171. Peavey PA-100 repair question
  172. Digital volume control for instrument level signal
  173. Question about Green Ringer ring modulator
  174. Home theatre subwoofer amp project
  175. Hammond M all ocal amp
  176. Discrete Compressor pedal design
  177. Need replacement speaker advice for 4X12
  178. I fried the mp3 input of my Roland Cube 40 xl
  179. Roy Blankenship at work
  180. The Mighty MKS-20 - What I've learned
  181. Crate GX 130c
  182. A Preamp doesn't work well!! (distortion)
  183. Draining a can cap
  184. Ampalanche
  185. Ace Tone Elite
  186. Power-booster power amp section for champ
  187. Need Ideas of what to do with 50+ tip36 PNP transistors
  188. '65 bassman ab165 hiss
  189. Silvertone Organ amp conversion
  190. Mesa Subway Rocket burned up! Help!
  191. Palmer Drei (Parallel SE w/mismatched output tubes)
  192. Fuzz Face circuit with unusual Ge PNP transistors
  193. recycling old tech to make an amp
  194. Low voltage Marshall inspired amp for voltage challenged individuals.
  195. upgrading a cheap guitar amp
  196. First test of rebuilt bass guitar amp
  197. first build is ready for testing. need to confirm the first reading though.
  198. Guitar Level to Line Level Hi-Quality Preamp
  199. What's wrong with this chassis layout?
  200. National guitar amp (?) "Sportsman" help needed
  201. switch rating question
  202. Experience modifying Boss pedals?
  203. Building a serious bass cabinet
  204. Gut Shot of Gibson GA-5 Skylark
  205. OK champ-mod?
  206. Looking for a power transformer Hartke HA 4000
  207. DIY UniVibe
  208. simplest possible push pull 6v6 cathode bias guitar amp?
  209. op amp output ceiling ???
  210. Fs Ibanez Renometer
  211. novice tube amp (re)build
  212. Farfisa Combo - Reverb Replacement
  213. digipots in audio ccts
  214. Good 300-400w amp kit for a beginner?
  215. Tl806 - EMV12L vs Eminence DeltaProA
  216. Modular Synthesizer with Tubes
  217. Vox AC15TB power transformer
  218. opamp driver for reverb tank, single supply
  219. pencil tube mini amp?
  220. Swapping OP amps
  221. Oh NO!! Its French!!!
  222. Peavy Triumph 60 Clean Channel
  223. self-split dual triode output impedance?
  224. Easy Tube distortion for beginner. (v1 6418 tubes?)
  225. Princeton clone hums - analyze my build?
  226. For accordion players: MIDI accompaniment
  227. i have a few questions about 5f1 champ project.
  228. Guitar amplifier LTSpice simulation
  229. help identify unknown Output transformer leads?
  230. Bass guitar preamp using op-amps
  231. So your 5E3 is still too loud huh?
  232. Seeking troubleshooting advice for my first amp build.
  233. I need help with this preamp!!!
  235. 2 seperate (switchable) power stages in same amp?
  236. electric guitar/mandolin preamp and effects
  237. Different approach to Harmonic Balancer question
  238. Andy Ross music "the Pro-Verb" schematics needed
  239. Harmonic Generator / guitar amp
  240. First post from a tube noob: Found 9 tubes!
  241. Valve spacing 6 x 6550
  242. plate starvation VS output tube overdrive.
  243. Best placement for a choke, VHT tube amp.
  244. Building an electret microphone Acoustic Guitar pick up. Want to ask something.
  245. Could use a second opinion.
  246. Buffering a Cathodyne Phase Splitter with Mosfets
  247. Zobel network, tone shaping, modify it !
  248. Reverb Tank for Peavey 30?
  249. Burns Orbit Three
  250. Lo budget, good sound

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