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  1. sub out in my 300b se? Help me please.
  2. Interstage OPT to drive 6V6 pp amplifier
  3. Voltage label on schematics...
  4. mystery purchase of the day
  5. What about the Eimac 3-500z?
  6. How much DC offset can a tube preamp take?
  7. Low voltage drop pass tube
  8. Convergent Legend Preamp
  9. vintage tube amp repair help
  10. Lasers, Tubes, and PCB
  11. 76 operating point/max plate rating?
  12. Mullard Made Tube Source Query
  13. SE Amp with NO HUM
  14. Frrank's 6Sn7 preamp...take out coupling cap??
  15. Need Schematic or help Newcomb AV-10 turntable tube amp
  16. Tube kits for beginners
  17. Lectron JH50 Tube Bias
  18. Tone circuit and other guitar amp Q's
  19. Removing LEDs from chinese amp
  20. Project madness
  21. chinese and tube Depot amps?
  22. eml 520 v2 info
  23. Gibson GA20 schematic needed
  24. Potted Transformer Enclosure Suppliers?
  25. Rogers Cadet III Phono Stage
  26. Modding Roberts/Akai mono block tube amps
  27. Full-wave bridge
  28. Output transformers and frequency response
  29. Class A2 SET using source follower driver
  30. Rectifier that drops lots of volts?
  31. switch snubber on preamp
  32. HV supply please comment before building
  33. This is cool
  34. Gold Lion KT88 Reissues
  35. 6F8G's any good?
  36. Matching capacitors
  37. Tung-Sol (new production) 6550s
  38. Curves, curves, and more curves
  39. Help for new design..
  40. OTL SE - Help Wanted with Idea
  41. OPTs causing crosstalk?
  42. KT88 Usable range
  43. How to change tubes ??? (NEWBIE)
  44. Do I need a Trafo for the HV in my 12AU7 (ECC82)?
  45. Need some help with potentiometer.
  46. Pinout of a UTC CG-422 power transformer
  47. Simple EL34 SET; advice?
  48. Popping Noise = Clipping ?
  49. PSU for an 813 SE
  50. Single Stage Line Amp (Diff Amp) Tube?
  51. EL 84 Edicron UK vs JJ
  52. calculating HF rolloff at 20kHz from input impedance
  53. Need info on RCA 813 used in Tube Amp
  54. Baby Huey: shunt feedback doesn't work to me
  55. Audio Innovations 800mkiii output trans needed
  56. High voltage psu
  57. First tubeamp, dont laugh too hard
  58. Newbie building d3A DRD 300B
  59. small practice amp with master volume
  60. Looking for informations on Marconi TF2331 Distortion Factor Analyser
  61. gu81m
  62. 6sc7 vs. 6su7 in LTPI duty
  63. Cascode with ECC81(12AT7)=>Morgan Jones
  64. Where can I find these?
  65. Kofi Annan in: "Seven-Pound Mono Amp"
  66. Kofi Annan in: "Surf Bassin'"
  67. McIntosh Re-cap Questions
  68. 5881
  69. Cary Audio V12 - Schematic - Needed
  70. Anyone tried this method for OTL?
  71. Can't simulate 12AX7 with multisim 7
  72. new member, and some Electrohome PA100Mk1's
  73. Edcor Interstage for Phase Splitter?
  74. Why isodyne splitters not popular...
  75. Low Voltage phono stage for newbies
  76. 6EJ7 or 6EH7 triode strapped?
  77. New Guy
  78. Building a Fender 5E3 Deluxe from scratch.
  79. Counterpoint SA20 Mosfet output rail voltage
  80. Silly Chassis Punch Question...
  81. Tube Noob question
  82. tube shop in the uk
  83. Choke question
  84. Self Bias and Fixed Bias for Big Tubes?
  85. page tubelab.com
  86. Stromberg Carlson ASR433 Question
  87. CCS better in plate or cathode
  88. Audiophile term: "HIP test"
  89. Advice needed for tweaking S5 Electronics K-12G diy kit
  90. TV Damper Diodes
  91. 813 SE circuit,will it work?
  92. Looking for tube for application
  93. Finger joints vs. screw and glue
  94. 2C36 plate curve
  95. EL34 as preamp
  96. with DHT rectifiers, is the "+" side of the power supply...
  97. Paging Unison845
  98. Quad II - Forty
  99. my amplifiers
  100. Cheap spud amp
  101. Dr. Z "Route 66"
  102. Interesting 6L6GC Test Report
  103. 4D32 SE amplifier... help!
  104. 6AS7G with grid current?
  105. bypass switch for preamp
  106. Grounded Grid vs. Aikido
  107. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  108. Could this work? (PP amp with CCS)
  109. about newbies...and textbook..
  110. NFB capacitor to screen tap on ST-70 ?
  111. Aikido question
  112. Help with amp #2, 300B or 6550?
  113. Russian 807
  114. Searching Sound Valves M40 Monoblocks schematic
  115. Make: Bell P/A - Model: Carillon '35'
  116. Octal tubes for 7695-style matrix amp?
  117. SET recommendations
  118. Dynaco ST35
  119. Scott LK-72A is ALIVE
  120. 5687 as a single stage SE amp
  121. Changing two stereo amps into two monos
  122. UL Feedback Tap Calculation
  123. Precision Test Equipment tube tester
  124. Octal pentode sub for ef86?
  125. Help with guitar amp sound
  126. to mach1: tubecad regulator using tl431
  127. Thermal management: it this not really of concern?
  128. Signal phase shift through a tube amp
  129. Common-mode EI PS Chokes
  130. Signal pentode in current production
  131. Pentode vs Ultralinear
  132. Bogen CHA33/CHA33Y
  133. Sheet Metal Gauge
  134. Help with 6N6p
  135. Can anyone help, identifing selenium bridge hookup please.
  136. E182CC substitution ?
  137. Face Plate Printing and Silk Screening
  138. Funky reading 12B4A?
  139. Sovtek 5Y3 Issues
  140. from lilliput to gargantua (just for fun)
  141. Formula for calculating HT voltage?
  142. DIY Headamp for Sennheiser-650?
  143. Nuera Tube Amps
  144. Amplifier identification
  145. Perfect tube regulator
  146. Value of grid leak resistor
  147. Comments on this circuit
  148. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  149. Heater current monitoring...
  150. on-off switch position in PSU
  151. A better LDO heater regulator
  152. Guitar Head Amp Schematic
  153. any feedback on Russian gas regulators like SG4S and etc.?
  154. Some cathode follower questions
  155. rectifier voltage drop
  156. Anyone please explain"What is an A1,A2 in SE amp?
  157. Interesting link for guitar amps
  158. What is the correct plate voltage in this circuit?
  159. Any1 have an Osmond PCB library for tubes?
  160. best type cap for preamp PSU
  161. Steve Bench PP loadlines
  162. single Diode power supply?
  163. Spice Error
  164. Anyone have a Welborne Labs amp?
  165. Please help out a Noobie...
  166. wellborne labs
  167. best schematic designer for tubes?
  168. hum in 1 channel
  169. B+ time delay relay
  170. something is wrong with the shunt regulator
  171. Suggestions for a high end tube amp kit
  172. Conrad Johnson PV 7 problem
  173. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  174. Power supply dilemma
  175. Transformer Placement 5E3
  176. Please help: no sound and blown fuse
  177. sparking Output transformer In Webcor 14x240 Amp
  178. Designing my very first tube amp...
  179. Diode bridge for Valve Buffered GC
  180. 6S41S (6C41C) Amplifier
  181. audio research sp11 upgrade help please
  182. The good, the bad, and the ugly OTL amplifiers
  183. Z2b tube rectifier
  184. Sparks inside GZ34
  185. Help with EV4417 6cm5/EL36
  186. Guitar Amps, Overdrive Pedals, and Space Charged Tubes
  187. My Cornet2 Tube Phono Preamp
  188. bright switch to bias circuit?
  189. Regulated AC...thought some of you might be interested
  190. Aikido PSU - integrated or standalone???
  191. Frank Philipse's tube site
  192. World' smallest GM-70 set
  193. Question on output hum on tube amp?
  194. Aikido Preamp
  195. Argh!!
  196. EL84 bias point
  197. Coupling cap rating
  198. Regulated power supply
  199. outstanding book??
  200. when the datasheet says "vertical mounting: up or down", does it mean...
  201. half wave rectifier will not saturate transformer core?
  202. Did I get in over my head too soon?!?
  203. Parallel output tubes
  204. Dropping filament volts/ L-W ramblings
  205. Rogers Cadet III Power problem ?
  206. about bi-cap
  207. HOT Iron ?
  208. how to set current in G Pimm's latest self-biasing CCS circuit?
  209. Low pass active tube crossover
  210. Ecological recycling amplifier (6CU6)
  211. Need ECF80 / 6BL8 tube spice 3f4 model
  212. Capacitor above chassis
  213. PS Help
  214. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  215. Transmitter tubes
  216. Power Supply Construction
  217. what are the advantages of double core output transformers vs EI ?
  218. What is a reasonable amount ripple voltage for a 300B?
  219. "Old Like" sound transformer with a Tube !
  220. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  221. P-P resistance oddity
  222. Tube preamp vs. solid state
  223. 6l6 penthode triode
  224. Rising hum when turntable is plugged into preamp ??
  225. 6SL7 or 6SL7GT for broken Tubalizer
  226. Aikido PCB and AC filaments.
  227. Help with 300b proyect.
  228. 6P14P Amp Scratch Build
  229. 6GH8 - A Little Off?
  230. design and personality
  231. An all DHT push pull amp.
  232. Junk Pile Linestage
  233. need tube rectifier info
  234. Question on voltages
  235. How to change this design from penthode to triode or UL
  236. what glass-ware program?
  237. aikido 12b4 input 6sn7 output???
  238. GZ34 and temperature
  239. schematic search crate bv-60
  240. First Guitar Amp Help
  241. power supply for my single ended amp
  242. transmitter tube amp
  243. resistor and capacitor values for Aikido preamp
  244. need opinion on 2nd hand AF analyzers prices
  245. DH rectifier hookup.
  246. WE 310A vs. Russian 310A in WE91
  247. CRC PSU for preamp
  248. Question on the installation of LL1668 plate choke
  249. max plate voltage rating in tube datasheet
  250. Tube for a shunt voltage regulator

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