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  1. Output transformers and frequency response
  2. Class A2 SET using source follower driver
  3. Rectifier that drops lots of volts?
  4. switch snubber on preamp
  5. HV supply please comment before building
  6. This is cool
  7. Gold Lion KT88 Reissues
  8. 6F8G's any good?
  9. Tung-Sol (new production) 6550s
  10. Curves, curves, and more curves
  11. Help for new design..
  12. OTL SE - Help Wanted with Idea
  13. OPTs causing crosstalk?
  14. KT88 Usable range
  15. How to change tubes ??? (NEWBIE)
  16. Do I need a Trafo for the HV in my 12AU7 (ECC82)?
  17. Need some help with potentiometer.
  18. Pinout of a UTC CG-422 power transformer
  19. Simple EL34 SET; advice?
  20. Popping Noise = Clipping ?
  21. PSU for an 813 SE
  22. Single Stage Line Amp (Diff Amp) Tube?
  23. EL 84 Edicron UK vs JJ
  24. calculating HF rolloff at 20kHz from input impedance
  25. Need info on RCA 813 used in Tube Amp
  26. Baby Huey: shunt feedback doesn't work to me
  27. Audio Innovations 800mkiii output trans needed
  28. High voltage psu
  29. First tubeamp, dont laugh too hard
  30. Newbie building d3A DRD 300B
  31. small practice amp with master volume
  32. Looking for informations on Marconi TF2331 Distortion Factor Analyser
  33. gu81m
  34. 6sc7 vs. 6su7 in LTPI duty
  35. Cascode with ECC81(12AT7)=>Morgan Jones
  36. Where can I find these?
  37. Kofi Annan in: "Seven-Pound Mono Amp"
  38. Kofi Annan in: "Surf Bassin'"
  39. McIntosh Re-cap Questions
  40. 5881
  41. Cary Audio V12 - Schematic - Needed
  42. Anyone tried this method for OTL?
  43. Can't simulate 12AX7 with multisim 7
  44. new member, and some Electrohome PA100Mk1's
  45. Edcor Interstage for Phase Splitter?
  46. Why isodyne splitters not popular...
  47. Low Voltage phono stage for newbies
  48. 6EJ7 or 6EH7 triode strapped?
  49. New Guy
  50. Counterpoint SA20 Mosfet output rail voltage
  51. Silly Chassis Punch Question...
  52. Tube Noob question
  53. tube shop in the uk
  54. Choke question
  55. Self Bias and Fixed Bias for Big Tubes?
  56. Stromberg Carlson ASR433 Question
  57. CCS better in plate or cathode
  58. Audiophile term: "HIP test"
  59. Advice needed for tweaking S5 Electronics K-12G diy kit
  60. TV Damper Diodes
  61. 813 SE circuit,will it work?
  62. Looking for tube for application
  63. Finger joints vs. screw and glue
  64. 2C36 plate curve
  65. EL34 as preamp
  66. with DHT rectifiers, is the "+" side of the power supply...
  67. Paging Unison845
  68. Quad II - Forty
  69. my amplifiers
  70. Cheap spud amp
  71. Interesting 6L6GC Test Report
  72. 4D32 SE amplifier... help!
  73. 6AS7G with grid current?
  74. bypass switch for preamp
  75. Grounded Grid vs. Aikido
  76. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  77. Could this work? (PP amp with CCS)
  78. about newbies...and textbook..
  79. NFB capacitor to screen tap on ST-70 ?
  80. Aikido question
  81. Help with amp #2, 300B or 6550?
  82. Russian 807
  83. Searching Sound Valves M40 Monoblocks schematic
  84. Make: Bell P/A - Model: Carillon '35'
  85. Octal tubes for 7695-style matrix amp?
  86. SET recommendations
  87. Dynaco ST35
  88. Scott LK-72A is ALIVE
  89. 5687 as a single stage SE amp
  90. Changing two stereo amps into two monos
  91. UL Feedback Tap Calculation
  92. Octal pentode sub for ef86?
  93. to mach1: tubecad regulator using tl431
  94. Thermal management: it this not really of concern?
  95. Signal phase shift through a tube amp
  96. Common-mode EI PS Chokes
  97. Signal pentode in current production
  98. Pentode vs Ultralinear
  99. Bogen CHA33/CHA33Y
  100. Sheet Metal Gauge
  101. Help with 6N6p
  102. Can anyone help, identifing selenium bridge hookup please.
  103. E182CC substitution ?
  104. Face Plate Printing and Silk Screening
  105. Funky reading 12B4A?
  106. Sovtek 5Y3 Issues
  107. from lilliput to gargantua (just for fun)
  108. Formula for calculating HT voltage?
  109. DIY Headamp for Sennheiser-650?
  110. Nuera Tube Amps
  111. Amplifier identification
  112. Perfect tube regulator
  113. Value of grid leak resistor
  114. Comments on this circuit
  115. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  116. Heater current monitoring...
  117. on-off switch position in PSU
  118. A better LDO heater regulator
  119. any feedback on Russian gas regulators like SG4S and etc.?
  120. Some cathode follower questions
  121. Anyone please explain"What is an A1,A2 in SE amp?
  122. What is the correct plate voltage in this circuit?
  123. Any1 have an Osmond PCB library for tubes?
  124. best type cap for preamp PSU
  125. Steve Bench PP loadlines
  126. Spice Error
  127. Anyone have a Welborne Labs amp?
  128. Please help out a Noobie...
  129. wellborne labs
  130. best schematic designer for tubes?
  131. hum in 1 channel
  132. B+ time delay relay
  133. something is wrong with the shunt regulator
  134. Suggestions for a high end tube amp kit
  135. Conrad Johnson PV 7 problem
  136. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  137. Please help: no sound and blown fuse
  138. sparking Output transformer In Webcor 14x240 Amp
  139. Designing my very first tube amp...
  140. Diode bridge for Valve Buffered GC
  141. 6S41S (6C41C) Amplifier
  142. audio research sp11 upgrade help please
  143. The good, the bad, and the ugly OTL amplifiers
  144. Z2b tube rectifier
  145. Sparks inside GZ34
  146. Help with EV4417 6cm5/EL36
  147. My Cornet2 Tube Phono Preamp
  148. bright switch to bias circuit?
  149. Regulated AC...thought some of you might be interested
  150. Aikido PSU - integrated or standalone???
  151. Frank Philipse's tube site
  152. World' smallest GM-70 set
  153. Question on output hum on tube amp?
  154. Aikido Preamp
  155. Argh!!
  156. EL84 bias point
  157. Coupling cap rating
  158. outstanding book??
  159. when the datasheet says "vertical mounting: up or down", does it mean...
  160. Did I get in over my head too soon?!?
  161. Parallel output tubes
  162. Dropping filament volts/ L-W ramblings
  163. Rogers Cadet III Power problem ?
  164. about bi-cap
  165. HOT Iron ?
  166. how to set current in G Pimm's latest self-biasing CCS circuit?
  167. Low pass active tube crossover
  168. Ecological recycling amplifier (6CU6)
  169. Need ECF80 / 6BL8 tube spice 3f4 model
  170. Capacitor above chassis
  171. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  172. Transmitter tubes
  173. what are the advantages of double core output transformers vs EI ?
  174. What is a reasonable amount ripple voltage for a 300B?
  175. "Old Like" sound transformer with a Tube !
  176. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  177. P-P resistance oddity
  178. Tube preamp vs. solid state
  179. 6l6 penthode triode
  180. Rising hum when turntable is plugged into preamp ??
  181. 6SL7 or 6SL7GT for broken Tubalizer
  182. Aikido PCB and AC filaments.
  183. Help with 300b proyect.
  184. 6P14P Amp Scratch Build
  185. 6GH8 - A Little Off?
  186. design and personality
  187. An all DHT push pull amp.
  188. Junk Pile Linestage
  189. need tube rectifier info
  190. Question on voltages
  191. How to change this design from penthode to triode or UL
  192. what glass-ware program?
  193. aikido 12b4 input 6sn7 output???
  194. GZ34 and temperature
  195. transmitter tube amp
  196. resistor and capacitor values for Aikido preamp
  197. need opinion on 2nd hand AF analyzers prices
  198. DH rectifier hookup.
  199. WE 310A vs. Russian 310A in WE91
  200. Question on the installation of LL1668 plate choke
  201. max plate voltage rating in tube datasheet
  202. choosing cap values for aikido
  203. Tubes in the Intermediate Stage
  204. c3m + 300b + miller capacitance
  205. How do I bias up a constant current series filament circuit?
  206. The perfect phono preamp.
  207. Got my 6BG6GA's last night
  208. Tubes4HiFi SP-6 preamp
  209. Shuguang 807s?
  210. LX-72A Sanity Check for Noooobie?
  211. Convert EL84 to 6V6? Anyone try this?
  212. PC96
  213. Ultrapath output transformers
  214. Grant RIAA phono with 12AX7/ECC83
  215. Ra-a??
  216. Help with my el509 amp almost done but with one problem.
  217. McIntosh chassis help needed
  218. Tube Voltage Regulator Design
  219. DC Tube Amplifiers
  220. Coupling cap voltage rating
  221. Anyone experienced in the 76 tube?
  222. aikido thump
  223. bypassing preamp board in integrated amp
  224. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  225. is it really required to use carbon comp for grid stoppers?
  226. How much trickle current can fixed bias cathode batteries stand?
  227. LM329 as voltage reference in a CCS.
  228. Euridice Preamp with 5842 and LL1660
  229. Trans. alignments
  230. Audio Note M3 Kit modification
  231. Has anyone simulated an "Aikido" amplifier?
  232. 6N1 Chinese tube and others
  233. 12AT7 Linestage design
  234. ECF80 instead of 7199
  235. 6922 vs 6SN7
  236. Transformer DCR's
  237. ferrite beads v. grid resistor
  238. What went wrong with my amp? Bass driver strange movement.
  239. Toccata Phono Preamp
  240. Drawbacks of Parafeed?
  241. aikido problem
  242. RS253 giant SE monoblock (Chinese)
  243. Plate chokes & Power chokes
  244. best amp for rock n roll
  245. quick question about tube relays
  246. Yeo's Simple EL84 with a twist
  247. ST-70 OPT, A-470 question
  248. meixing 805 tube amp problems
  249. Advice for NOOBie - Dad's Scott LK-72
  250. KT66 SE amp, grid current or not?

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