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  1. Pre Amps
  2. 12 volt preamp
  3. JE LAB's 2001 2A3 & Preamp???
  4. 12AX7WA
  5. found DIY amp - now what?
  6. Magic Eye spectrum analyzer
  7. Tube Companies
  8. B+ from GZ34 Heater CT ?
  9. Unknown mA on Gardners mains transformer
  10. PSU Question
  11. how to mount rca jacks and volume control in wood enclosure?
  12. Freaky Whistle in Guitar Amp
  13. Giaime's last nightmare - aka RIAA faceoff
  14. 5687 dc 5687 tube amp need help
  15. Input cap needed
  16. 6BQ5\EL84 line amp
  17. Capacitor Values Why so high? & What can I do?
  18. Bias pot question
  19. What I have: 4 Tubes. What I need...
  20. let me fix this bias
  21. A small no-fuss pentode/pentode SE amp
  22. Bleeder Resistor Placement
  23. Modifying Heathkit AA 151
  24. Interstage transformer for PI.
  25. Motorrun caps ... GND side?
  26. mono center channel out to stereo
  27. Audio Research REF 2 MkII
  28. 717a plate volts
  29. valve preamp criticisms?
  30. LOT of tubes. what can I do?
  31. substitution for 7355
  32. KT88 heaters
  33. Software for drawing tube schematics?
  34. Guitar Amp HUUUM with an MP3! Reverb Problem
  35. New books posted
  36. Compound bias
  37. Tube Oscillation or Microphonic Question
  38. WTB:OT for el 34 35 watt tube amplifier
  39. Questions on 6H30 simple PF?
  40. "Super Davohm" 1w .1% wirewound
  41. Heathkit AA-100
  42. 6159 for SE Power amp
  43. Do SMPS have a home at high end audio?
  44. Kofi Annan in: "300beee!" or "Kofi Gets a Toy"
  45. cathode capacitance on anode follower
  46. looking for a building shematic for ECLL800
  47. Iron learning.
  48. Tube Amp - Crackling Sound on Left Channel
  49. Pspice preamp simulation
  50. Supply voltage for 12v6 12B4 heaters
  51. Studio Tube Preamp
  52. New project and my first circuit...
  53. Champ clone fried my soundcard
  54. Choke coupled phase invertor
  55. long cable line drive
  56. What To Do?
  57. Simple Method To Measure Source Resistance?
  58. is this true????
  59. query on the PSU of a preamp
  60. Meshplate Help needed
  61. 6072 tube preamplifier.
  62. hybrid rectifiers and PIV rating
  63. transformerless amp help plz ...
  64. Help me build a tube MIC preamp plz
  65. chinese 845 amp blowing fuses
  66. Question about PIV rating of diodes...
  67. Triode strapped heptode?
  68. The Fisher 500C/800C Challenge (long..dialup warning)
  69. 5 wire output transformer
  70. Orcad & tube library
  71. Wall Wart Tube Power
  72. How can I lower B+ of power supply?
  73. How do you put a CCS under a diff. pair of DHTs???
  74. Just need to make sure.
  75. restoring a marantz 7c
  76. Who sells a tube bass guitar amp kit??
  77. What is Simplest and Best 6L6 PP circuit? (PK)
  78. Good DIY Transformer Article (in Thai)
  79. Tube Swapping Question
  80. Toroid choke question
  81. Pentode CCS for parafeed SEP??
  82. subminiature tube suggestion
  83. MQ431 or Triode's DynaClone
  84. Conrad Johnson MV 45 schematic help
  85. signal wiring
  86. NEW B Need Help on Output Tx Problem
  87. center tap of heater winding
  88. Dynaco Mk IV question
  89. Does this tube amp has enough cap
  90. Acrosound TO-330 output transformers
  91. PP transformer for SE use
  92. Holiday Time!
  93. another beginers first amp thread!
  94. Western Electric 374A
  95. Musen to Jikken 03/1997
  96. Please help me make a schematic
  97. Tips for Hakko 936-12
  98. AC or DC for 300b Heaters
  99. Two irons for PSU
  100. Which DHT for Line stage?
  101. Pye Mozart 10 amplifier
  102. I need a simple schematic with 6J1P tubes
  103. First tube project. Need advice.
  104. Sound Valves M-40 assistance
  105. Has anyone been keeping up on the 'New Sensor' Controversy?
  106. quad esl output transformer.
  107. penta labs?
  108. New Build (Guitar Amp)
  109. transformer links
  110. EL84 auto split
  111. TOPWARD MODEL 605 operation manual & Schematic
  112. PREdator, Diff/CF linestage.
  113. Triode Electronics ??
  114. Full Bridge Amp?
  115. Tube literature on pentodes + transformers
  116. so, who made General Motor's "AUTRONIC EYE" tubes?
  117. 6DJ8 Linestage
  118. Annyone seen this problem?
  119. psu to heater on 4 el34 tubes???
  120. 6C33C-B, Reliability--A theory........
  121. Sun Audio preamps
  122. Anyone Use A Harmon/Kardon XT-2 Xformer For MC ?
  123. Carver Phono
  124. Help With 3 Channel Magnavox
  125. simulation software
  126. trickle charge psu?
  127. tube filter
  128. Holiday S-5 K-12G
  129. Couple of (newbie) tube questions...
  130. valve buffer gainclone
  131. Series wiring for heaters
  132. DIY tube cd player ?
  133. Tubes in mp3 players?
  134. Output Impedance?
  135. Hum Pot Question
  136. Which 6AQ5
  137. White flakes in rectifier tube??
  138. Bogen V20 PA Amp Schematic or ?
  139. 12a?7 in Eico HF-12
  140. Home Made Tubes?? has anyone made one, is it possible??
  141. replace 6N1P with 7308
  142. Plate choke on a line stage?
  143. Looking for datasheet
  144. 811A SET Monoblock physical layout suggestions
  145. Automated bias
  146. OTL or parafeed?
  147. tubes: Jcm 900 Slx 50watt
  148. Reversing mains toroids for HT
  149. 5881/6L6WGC and 12AT7WA replacement
  150. Direction for Mounting Transformers
  151. Ecf80
  152. feedback phasing
  153. Cryotubes? Cryogenically Frozen valves
  154. European Triode Festival 2005
  155. PSU capacitors
  156. Question on shared rectifier / signal tube filament windings
  157. Heathkit rebuild or...?
  158. Fisher 500B OPT/Feedback Questions
  159. Transformer selection question
  160. Grounded Grid Help
  161. EF86 penthode
  162. Any audio use for ER21A?
  163. Upgrading a sonic frontiers SFS-80
  164. Hum problem
  165. low frequency oscillation in 12B4 linestage
  166. Balanced volume control question
  167. Need Help for Power Supply for gg Preamp
  168. OTL 6c33c Ciufolli v8.2 low voltage rails
  169. Any way to extend OPT low-frequency response?
  170. RCA Phono Stage Redux
  171. About tube codes
  172. More Joules? Tube or Solid State PSU?
  173. EL34 schematic confusion
  174. 2-stage DHT: high-mu vs. interstage stepup
  175. Understanding this power supply
  176. 6V6G recommended schematic
  177. parallel CRC Filtering for B+
  178. 6v6. 6lg Gain Max Voltage
  179. More buffer questions
  180. Benchtop PS
  181. Chassis labels
  182. LM317 Regulator Problem
  183. Can I afford my SE amp ??
  184. 12B4 versus 6S4 for linestage
  185. Function Generator Probe?
  186. Otl Set?
  187. Tektronix TDS2000 series is a noisy scope
  188. vanderveen's 30W PP amp..
  189. Roberts/Akai M series amp problems
  190. What speaker to use with my tube clone
  191. What’s the best tube amplifier you can build?
  192. Cathode Follower Buffer Input Impedance
  193. EL84 as Preamp and as Crossover
  194. Wondering if Upcoming DIY design will work with Tubes? Cheap DIY Kits?
  195. EL 84 Single Ended Integrated
  196. "2 Stage" PP 7591 Amp
  197. Jolida 1301a with Mission M71 speakers?
  198. EL34 SE in 430V?
  199. EL 84 PPP/PP Class A Triode schematic
  200. Almarro A318A
  201. beckman berkley model 7360
  202. spice model for UL output transformer?
  203. Need help with my new amp
  204. Motor caps
  205. E88CC Mullard fake
  206. Anyone try sharp cutoff pentodes in a p-p output stage?
  207. 845 A2 Monoblock Project
  208. newb needs help on simple el84 amp PS
  209. Newbie's power supply woes
  210. Question about M7 Preamp
  211. Which amp to DIY as a first project?
  212. help for psu
  213. tube amp
  214. Will a 6BH6 work in an Aikido?
  215. Tubes and maximum ratings
  216. FireFly Amp Question
  217. help needed 1st tube diy
  218. Help for newbie building Toccata preamp
  219. Diy Orange guitar amp
  220. Hybrid amp -> tube for VAS stage
  221. I recently inherited a Heathkit HO-10 monitor o-scope...
  222. Laney PA amp help!
  223. Aikido tube choice
  224. Biasing pre-amp problem
  225. Help with identifying tube
  226. Off Topic Holiday Cheer
  227. Prototype preamp example
  228. PV10AL Transformer burned, help!
  229. EL34 Pentode in Push-Pull!
  230. Mcintosh MX110 repair
  231. Mains Transformer Question
  232. Loaded Question
  233. A BIG SCRATCH in my speakers? Help me please.
  234. New Production Tung Sol 6550 Tubes - Opinions
  235. Looking to build a tube integrated
  236. Which high power CCS for output stage?
  237. Using a mosfet to drop B+?
  238. drawings vs. schematics
  239. New TEK Scopes
  240. Transfos Anyone?
  241. Ripple guidelines for power supplies
  242. Mains transformer orientation
  243. New Nightmare (Guitar Amp)
  244. AMD tube integrated tube amp
  245. Using Choke in LCRC filter in power supply
  246. Need good current sink JFET or MOSFET?
  247. Setting Up a Circuit for Testing
  248. 6H6 question
  249. Kennedy Tube Audio Website Hijacked
  250. Yet another 12B4 line stage, or is the 12B4 better than the Grounded Grid.....

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