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  1. Triode mode Pentode G2 resistor?
  2. Rectifier.
  3. Tube gainstage for newbie
  4. Source follower irf720 or DN2540
  5. Toroidal OPT
  6. Tesla E83CC - Have done research & still havingt trouble spotting fakes from real
  7. Can Capacitor
  8. SE Power amp SG2 voltage
  9. Bias supply
  10. 7377 tube socket
  11. Power Transformer Impedance Matching
  12. zenith console amplifier (a stereo mono amplifier :) )
  13. Trutone model Teeco 610-D
  14. electromagnetic hum problem
  15. Heathkit A7 Volume.
  16. Ribbon Tube Amp
  17. Brimar ECC83 with red bottom
  18. Dynaco ST 35 Cheap Transformers source in EU
  19. Transformer input for P-P
  20. Help Identifying 12au7a From Hammond Organ
  21. K502 Bleeder and LED
  22. Cathode follower attenuates signal
  23. Anyone has a curve tracer to trace Western Electric 436A 448A 418A in triode mode ?
  24. Breadboards and tube voltages
  25. Dynaco 35 Power Supply
  26. Magic eye with tube em80-schematic or circuit
  27. Using 220v amp in country with 230v
  28. Magic eye with EM81 tube - made in China
  29. Improvement Suggestion Wanted: 6AS7 Hybrid PP Amp
  30. Tube amp instability in LTSpice (Claus Byrith 4-30)
  31. Current mfg triode's
  32. K12g upgrades
  33. Help Needed Identifying a Custom Tube Amp
  34. Capacitor Voltage rating
  35. 6dj8 6922 driver question
  36. APPJ PA0901A Repair
  37. Output tube G1 resistors question
  38. Building Mullard PP ECL86 stereo
  39. 6SN7 Parallel Preamp Anyone?
  40. Advice on Finishing my K502 Build
  41. Another SSE build question
  42. Ferrite SE Outut XFMR for HF Tube Amp
  43. Question about grounding a 2-prong tube amp
  44. Grommes Mono Block
  45. EL84 triode mode @ 425V?
  46. Hybrid amp - Grounding Suggestions?
  47. Advises asked for, exquisite taste wanted!!
  48. need a good 2a3 socket... need advice
  49. Cathode feedback comments?
  50. Does different Rectifier Tubes change the tone????
  51. Another boring day
  52. el84 Tube amp
  53. Haddon PL151 Quad II input transformer
  54. Noob question
  55. Futterman H3 Set Up
  56. Good tube amp for bass
  57. Any tube guys here use a MiniDSP
  58. Should Output Transformers be replaced
  59. Quad II questions
  60. MY OTL Tim Mellow-ESL 63 PROJECT
  61. Zobel for REDD47 w/ HA-100 Inpu
  62. Pentode P-P - cathode biasing for A and AB
  63. Why a Headphone Amp?
  64. How little B+ ripple do I really need?
  65. Need good EF86 based RIAA preamp.
  66. Marshall 9005 modification
  67. Which Tube amplifier should I build first?
  68. Sound Practices Magazines, Complete Set 98% perfect
  69. 6L6GC in Push Pull Class A - how much power out?
  70. ECC83 DC Heater Supply - without CT
  71. PPP EL84 monoblocs: i knew then what i know now...
  72. zener, voltage devider or 02A
  73. DHT heater current draw - how fast?
  74. Rca sa752
  75. Audio Research and Octal Pre's
  76. Scott 299D
  77. Unison Smart 845 big problem
  78. Need help with driver idea for 845 amp - have a few ideas
  79. Input impedance on cathode follower stage?
  80. Picked up a box of tubes for $5.. What tubes are usable?
  81. Need help on potentiometer.
  82. A Raven preamp (mk2) finished
  83. need help searching for ground
  84. Pre-amp transformer output
  85. Boyuu EL34 A9 Tube Amp
  86. Hybrid 15W, want feedback - work in-progress
  87. PT from scratch for 100 W Marshall 2555 Silver Jubilee - advices and comments ...
  88. SP12 and PH12 Pre and Phono from Vacuum Tube Audio
  89. Which tube amp for Telefunken-tlx3 loudspeakers?
  90. Burned up a tube - want to be sure I know why
  91. Output Transformer Windings in parallel
  92. New tube tech from Korg
  93. Got some PX4 valves from an old radiogram
  94. At the start: Triodedick´s Monobill Classic KT88 Monos
  95. Choose your harmonic distribution: which sound better?
  96. Recommended HT current limit for old stock power transformers
  97. preamp circuit
  98. Low impedance headphone amp
  99. "Earthing" in DIY tube preamps
  100. Tube amp help
  101. How to draw a dynamic load line for cathode bypass triode like 12AX7
  102. Common Grid design
  103. 6AW8-A
  104. Push pull amp without GNFB
  105. No filament voltage
  106. Selecting Component Values for Simple Current-Feedback Amplifier
  107. 4 Blown Soft Recovery Diodes...Are TV Damper Tubes more Reliable?
  108. Just got a nice EL84 based receiver
  109. Is there any good current Production 6550s?
  110. Building the Damn Good 300B
  111. convert trashed kolster k20 into tube amp?
  112. Junkbox Hero
  113. KT150 curves by Sofia
  114. My new EL84 Amp
  115. 1955 Bogen J330 Mic Input Problem
  116. parallel el84 output pp. shared coupling caps?
  117. Will a Western Electric 422A substitute for a 5Y3?
  118. Question for a moderator
  119. bottlehead quickie schematic
  120. RCA 6146B sub for 807 or 6L6?
  121. Leak monoblock hum
  122. Eico 2036
  123. Heathkit iT-12 signal tracer to much gain??
  124. Valve Monoblocks - am I being realistic?
  125. Aikido Headphone Amp and PS1 Power supply
  126. Transforming a triode into a pentode?
  127. New to amps - Long-tail pair and heater hum
  128. Experimenting with the Aikido 12Vac kit
  129. Strategies for Implementing Negative Feedback in a 12ax7 Line Amplifier
  130. Output Transformer Impedances
  131. PP 6l6 class ab...advice needed
  132. 300B
  133. 12AX7 EL34B TUBE AMPLIFIER
  134. UK info please
  135. PAS 2/3 RIAA Modification
  136. My Homage to the Earmax Headphone Amp
  137. Aikio Line Stage
  138. Lite Audio LS 58 schematic
  139. Lite Audio LS 58 schematic
  140. Love those triodes
  141. Differential Pair with negative feedback
  142. Quad II Eighty Schematic?
  143. Adventures with Aikido
  144. Beard BB 100 and Beard A35
  145. Noob is about to press the BIN button and buy a Chinese tube amp kit. Save me/ help?
  146. Ebay Kit EL34 6n9P 5Z3P Build Thread.
  147. Sakuma 46 / 801A Circuit
  148. Tube Manufacturing at Expo-Pul
  149. Philips EL6410, how does it sound?
  150. tube amp power help
  151. Video from the Czech Tesla Tube factory
  152. Alans' rantings
  153. 3 x 3 Tube amp 30 watts
  154. Maximum allowed capacitance after gas rectifiers
  155. PSUD2 rectifiers list
  156. EL34 amplifier with these transformers
  157. Aikido Octal Dual Mono for Dummies... Help me.
  158. Monster Trans or Really Good Doorstop?
  159. The correct way to wire DC filaments 3B7 DHT
  160. Haller Circuit Problems
  161. Need recommendation for VERY basic amp project
  162. Recommendation on tube buffer?
  163. For Your Consideration: Unity Coupled Plitron Amp, No Bootstrapped Driver, No GNF
  164. Tango Transformers - any unique push pull circuits?
  165. newbe at designing tube amp
  166. Need help with microphone preamp.
  167. Trouble shooting vintage Harman Kardon A250
  168. Coating on Hammond Power Transformer
  169. Small tube amp for PC
  170. CCS dissipation
  171. 6SL7 - grid stopper values
  172. HELP - Laying out footprint for 9 pin tube socket
  173. Telefunken Magnetophon 104 - Keep or strip?
  174. Transformer rewinding or repair needed.
  175. Sun Audio in the USA?
  176. Wyetech Opal 6SN7 tube preamp, any DIY kit sound even close?
  177. KBG capacitors
  178. Praise for the 6N6G
  179. DHT equivalent to 12AT7?
  180. Why high voltage in coupling caps?
  181. BIAS Consonance M800SE
  182. SE ECC83 - EL 84 - EZ 81 - 1964 !
  183. Name That Design!!
  184. Distortion expected in SE DC coupled 26/45 amp
  185. One Channel is Louder than the other on my Tube Phono Pre
  186. Need a Zobel Network (or RC shunt) in tube amplifier?
  187. Aikido 12VAC Help needed
  188. Novarria TU-30 output transformer
  189. Question on Schematic
  190. CJ PV-10A
  191. Mcintosh C2200 ReCap
  192. simple tube amp for music
  193. SE Parafeed Signal Return ?
  194. RCA VC274
  195. Heathkit w5
  196. tube rectifier for 1000v AC
  197. New Tubes For Peavey Valveking VK100
  198. Tone Control Intercept Point on TU 8200
  199. Help with transformer and power switch wiring
  200. Mullard 5-20 iron
  201. Hard data on HP928
  202. Glassware Audio
  203. 5U4G problem
  204. Schematic för mono el84 SE wanted
  205. qualtek power module
  206. Low Static Hum Issue
  207. Look over my whacko schematic?
  208. PSU inrush current
  209. Heathkit A7 Output transformer
  210. THose lovely triodes
  211. Just picked up a shoebox of tubes from Craigslist
  212. Lower the primary impedance of the OPT to reduce distortion?
  213. Parallel/Series heater question
  214. Jay's Cheaterpants Hong Kong Marantz 7 Clone Build-Along
  215. Unused half of dual triode in low gain input stage in mono blocks?
  216. 12AL8 PP Amp Low Volume - Is this all or i can get more?
  217. Electrolytic cap voltage
  218. Power supply resistors
  219. Aikido Headphone amplifier
  220. preamp
  221. Resistor question
  222. How to turn Salvaged Parts into Projects..
  223. Output polarity?
  224. Help with this circuit
  225. Doing silly stuff for fun
  226. Modern Mullard head scratching
  227. Leben cs660p un identified component
  228. KT88 or 6L6 High-mu triode curves
  229. Edcor 240V primary 50hz humming
  230. Aikido quesion
  231. Why 6L6 is not more popular as power tube?
  232. 304TL SET schematic redesign. EML-20b Alternative?
  233. Question about Mullard EL84 Aplication note
  234. Magnavox tuner preamp 570111
  235. Tube amps on E-Bay
  236. Input, Output and Transfer Capacitance Question
  237. K502 Mods
  238. filament supply rectifier
  239. Triode as Voltage-Controled Dynamic Resistance in Compressor/Limiter
  240. RHSpud: Novice build
  241. 2A3 Amp - Not Another One...
  242. 12b4a pp
  243. replacing ECC82 with ECC99
  244. 2A3 input sensitivity
  245. Amp for JBL 2447 driver?
  246. Rare Philips 12ax7 Code Need Help
  247. Two quick questions on 35W4
  248. To convert Novar pins for Magnovale pins
  249. Mingda mc7r late design tweaking
  250. PSU for KT-90 PPP

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