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  1. Low Voltage phono stage for newbies
  2. 6EJ7 or 6EH7 triode strapped?
  3. New Guy
  4. Counterpoint SA20 Mosfet output rail voltage
  5. Silly Chassis Punch Question...
  6. Tube Noob question
  7. tube shop in the uk
  8. Choke question
  9. Self Bias and Fixed Bias for Big Tubes?
  10. page tubelab.com
  11. Stromberg Carlson ASR433 Question
  12. CCS better in plate or cathode
  13. Audiophile term: "HIP test"
  14. Advice needed for tweaking S5 Electronics K-12G diy kit
  15. TV Damper Diodes
  16. 813 SE circuit,will it work?
  17. Looking for tube for application
  18. Finger joints vs. screw and glue
  19. 2C36 plate curve
  20. EL34 as preamp
  21. with DHT rectifiers, is the "+" side of the power supply...
  22. Paging Unison845
  23. Quad II - Forty
  24. my amplifiers
  25. Cheap spud amp
  26. Dr. Z "Route 66"
  27. Interesting 6L6GC Test Report
  28. 4D32 SE amplifier... help!
  29. 6AS7G with grid current?
  30. bypass switch for preamp
  31. Grounded Grid vs. Aikido
  32. how to connect an EL34 pentode into a triode and 100ohm resistor between plate and g2
  33. Could this work? (PP amp with CCS)
  34. about newbies...and textbook..
  35. NFB capacitor to screen tap on ST-70 ?
  36. Aikido question
  37. Help with amp #2, 300B or 6550?
  38. Russian 807
  39. Searching Sound Valves M40 Monoblocks schematic
  40. Make: Bell P/A - Model: Carillon '35'
  41. Octal tubes for 7695-style matrix amp?
  42. SET recommendations
  43. Dynaco ST35
  44. Scott LK-72A is ALIVE
  45. 5687 as a single stage SE amp
  46. Changing two stereo amps into two monos
  47. UL Feedback Tap Calculation
  48. Precision Test Equipment tube tester
  49. Octal pentode sub for ef86?
  50. Help with guitar amp sound
  51. to mach1: tubecad regulator using tl431
  52. Thermal management: it this not really of concern?
  53. Signal phase shift through a tube amp
  54. Common-mode EI PS Chokes
  55. Signal pentode in current production
  56. Pentode vs Ultralinear
  57. Bogen CHA33/CHA33Y
  58. Sheet Metal Gauge
  59. Help with 6N6p
  60. Can anyone help, identifing selenium bridge hookup please.
  61. E182CC substitution ?
  62. Face Plate Printing and Silk Screening
  63. Funky reading 12B4A?
  64. Sovtek 5Y3 Issues
  65. from lilliput to gargantua (just for fun)
  66. Formula for calculating HT voltage?
  67. DIY Headamp for Sennheiser-650?
  68. Nuera Tube Amps
  69. Amplifier identification
  70. Perfect tube regulator
  71. Value of grid leak resistor
  72. Comments on this circuit
  73. Just grabbed this AF mesuring equipement, Any infos before restauration is Welcome
  74. Heater current monitoring...
  75. on-off switch position in PSU
  76. A better LDO heater regulator
  77. Guitar Head Amp Schematic
  78. any feedback on Russian gas regulators like SG4S and etc.?
  79. Some cathode follower questions
  80. rectifier voltage drop
  81. Anyone please explain"What is an A1,A2 in SE amp?
  82. Interesting link for guitar amps
  83. What is the correct plate voltage in this circuit?
  84. Any1 have an Osmond PCB library for tubes?
  85. best type cap for preamp PSU
  86. Steve Bench PP loadlines
  87. single Diode power supply?
  88. Spice Error
  89. Anyone have a Welborne Labs amp?
  90. Please help out a Noobie...
  91. wellborne labs
  92. best schematic designer for tubes?
  93. hum in 1 channel
  94. B+ time delay relay
  95. something is wrong with the shunt regulator
  96. Suggestions for a high end tube amp kit
  97. Conrad Johnson PV 7 problem
  98. Math to calc optimal voltage of tube dac to match amp input sensitivity?
  99. Power supply dilemma
  100. Transformer Placement 5E3
  101. Please help: no sound and blown fuse
  102. sparking Output transformer In Webcor 14x240 Amp
  103. Designing my very first tube amp...
  104. Diode bridge for Valve Buffered GC
  105. 6S41S (6C41C) Amplifier
  106. audio research sp11 upgrade help please
  107. The good, the bad, and the ugly OTL amplifiers
  108. Z2b tube rectifier
  109. Sparks inside GZ34
  110. Help with EV4417 6cm5/EL36
  111. Guitar Amps, Overdrive Pedals, and Space Charged Tubes
  112. My Cornet2 Tube Phono Preamp
  113. bright switch to bias circuit?
  114. Regulated AC...thought some of you might be interested
  115. Aikido PSU - integrated or standalone???
  116. Frank Philipse's tube site
  117. World' smallest GM-70 set
  118. Question on output hum on tube amp?
  119. Aikido Preamp
  120. Argh!!
  121. EL84 bias point
  122. Coupling cap rating
  123. Regulated power supply
  124. outstanding book??
  125. when the datasheet says "vertical mounting: up or down", does it mean...
  126. half wave rectifier will not saturate transformer core?
  127. Did I get in over my head too soon?!?
  128. Parallel output tubes
  129. Dropping filament volts/ L-W ramblings
  130. Rogers Cadet III Power problem ?
  131. about bi-cap
  132. HOT Iron ?
  133. how to set current in G Pimm's latest self-biasing CCS circuit?
  134. Low pass active tube crossover
  135. Ecological recycling amplifier (6CU6)
  136. Need ECF80 / 6BL8 tube spice 3f4 model
  137. Capacitor above chassis
  138. PS Help
  139. Bogen-Stein! mx60a mx-60a mo100a mo-100a
  140. Transmitter tubes
  141. Power Supply Construction
  142. what are the advantages of double core output transformers vs EI ?
  143. What is a reasonable amount ripple voltage for a 300B?
  144. "Old Like" sound transformer with a Tube !
  145. I coined the phrase HIGH VIVIDITY, to differentiate our amps from High Fidelity ones
  146. P-P resistance oddity
  147. Tube preamp vs. solid state
  148. 6l6 penthode triode
  149. Rising hum when turntable is plugged into preamp ??
  150. 6SL7 or 6SL7GT for broken Tubalizer
  151. Aikido PCB and AC filaments.
  152. Help with 300b proyect.
  153. 6P14P Amp Scratch Build
  154. 6GH8 - A Little Off?
  155. design and personality
  156. An all DHT push pull amp.
  157. Junk Pile Linestage
  158. need tube rectifier info
  159. Question on voltages
  160. How to change this design from penthode to triode or UL
  161. what glass-ware program?
  162. aikido 12b4 input 6sn7 output???
  163. GZ34 and temperature
  164. schematic search crate bv-60
  165. First Guitar Amp Help
  166. power supply for my single ended amp
  167. transmitter tube amp
  168. resistor and capacitor values for Aikido preamp
  169. need opinion on 2nd hand AF analyzers prices
  170. DH rectifier hookup.
  171. WE 310A vs. Russian 310A in WE91
  172. CRC PSU for preamp
  173. Question on the installation of LL1668 plate choke
  174. max plate voltage rating in tube datasheet
  175. Tube for a shunt voltage regulator
  176. choosing cap values for aikido
  177. Tubes in the Intermediate Stage
  178. c3m + 300b + miller capacitance
  179. How do I bias up a constant current series filament circuit?
  180. The perfect phono preamp.
  181. Got my 6BG6GA's last night
  182. Tubes4HiFi SP-6 preamp
  183. Stupid electrolytic cap question.......
  184. Shuguang 807s?
  185. LX-72A Sanity Check for Noooobie?
  186. Convert EL84 to 6V6? Anyone try this?
  187. PC96
  188. Ultrapath output transformers
  189. Grant RIAA phono with 12AX7/ECC83
  190. Tube VS SS voltage regulators - any advantages?
  191. Ra-a??
  192. Help with my el509 amp almost done but with one problem.
  193. McIntosh chassis help needed
  194. Tube Voltage Regulator Design
  195. DC Tube Amplifiers
  196. Coupling cap voltage rating
  197. Anyone experienced in the 76 tube?
  198. aikido thump
  199. bypassing preamp board in integrated amp
  200. Mallory FP 2x30/500 for Scott LX-72 - NOOB
  201. is it really required to use carbon comp for grid stoppers?
  202. How much trickle current can fixed bias cathode batteries stand?
  203. Who is the administrator?
  204. LM329 as voltage reference in a CCS.
  205. Euridice Preamp with 5842 and LL1660
  206. Trans. alignments
  207. Audio Note M3 Kit modification
  208. Has anyone simulated an "Aikido" amplifier?
  209. Upgrading ST70 PS w/ SS question
  210. 6N1 Chinese tube and others
  211. 12AT7 Linestage design
  212. ECF80 instead of 7199
  213. Modifying a tube tester into a curve tracer (oscilloscope X/Y outputs) ?
  214. 6922 vs 6SN7
  215. Transformer DCR's
  216. ferrite beads v. grid resistor
  217. What went wrong with my amp? Bass driver strange movement.
  218. Toccata Phono Preamp
  219. Drawbacks of Parafeed?
  220. aikido problem
  221. RS253 giant SE monoblock (Chinese)
  222. Plate chokes & Power chokes
  223. 10uF filter cap too small? PSU schematic inside
  224. HOT ROD DELUXE: CRACKLE...POP...what to do?
  225. converting Baldwin organ amp to guitar
  226. best amp for rock n roll
  227. quick question about tube relays
  228. Yeo's Simple EL84 with a twist
  229. ST-70 OPT, A-470 question
  230. meixing 805 tube amp problems
  231. Advice for NOOBie - Dad's Scott LK-72
  232. Peavey Valve King 112
  233. KT66 SE amp, grid current or not?
  234. 269EX in a champ?
  235. How do I achieve more output power?
  236. Driver stage load resistor
  237. More Edcor XSM10K/10K Specs
  238. DC filament
  239. driver stages
  240. Bay Area DIY is Cancelled Because....
  241. Is constant filament current better way to build amps?
  242. Next amp build - Trainwreck - Princeton - Deluxe ???
  243. Quicksilver M135 Output Transformers Color Code?
  244. Dynaco ST70 clone, tubes substitution question
  245. caddocks mk132: has anyone used them for tube projects?
  246. DIY Pro Audio Recording Gear - La2a, Pultec, more.
  247. size of filtering caps SS vs OTL tube
  248. Current rating and tube current draw
  249. NUCLON -- My first hybrid guitar amp
  250. PP splitters again

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