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

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