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  1. RH84 amplifier build, but very weak distorted output
  2. Paralleling filament transformers
  3. 6ak5 triode mode disipation
  4. Equalize or Not Equilize when driving a tube amp ?
  5. How to retire from DIY and sell off all your workshop contents?
  6. New to tubes and diyaudio here, question about torrids and tube amps...
  7. PC Based Oscilliscope for Tube Curcuits
  8. Lamp in HV Centre Tap - why?
  9. EL156 PP
  10. 300B resistor
  11. Has anyone here bought from ussr-tubes.com ?
  12. Which cathode bypass capacitor?
  13. RIAA Schematic for-6SL7,7308 or?
  14. Chassis' for Tube Gear
  15. Convergent Audio Tech SL1 preamp
  16. Buy Them While You Can Not When You...
  17. Does anyone know of Thomas Martens?
  18. OTL for 40-80ohm speakers
  19. Morrison Dinosaur
  20. pcl86=14gw8 ??
  21. My little SE with GU50
  22. Source follower in a DC-coupled pp amp?
  23. Tube chassis for retail sale.
  24. Poor man's power supply
  25. High voltage driver for AB2 operation GU81m tubes
  26. 5AR4 rectified power supply question
  27. Direct Coupled Amp
  28. Is this EL84 kit from Germany worth fooling with?
  29. 6v6 PP Pentode mode
  30. 5 pin octal tube socket
  31. RCA Manual Typo?
  32. pete millet low mu preamp
  33. Capability to drive the 211 PP
  34. 6BG6G SE advice needed.
  35. Signal Generator: Which one to buy ? What to look for in a signal generator ?
  36. Power booster
  37. I've just build this steroe amplifier
  38. What amp to build? Push Pull, SE? thoughts?
  39. amp sounds bad- fatman itube 252
  40. 6C33 single ended class A2 (cathode network question)
  41. Sweet Peach EL34b Amp - Distortion?
  42. 6C33C socket types, where to buy?
  43. haedphone amp. using 6418< NEED HELP
  44. finished my 6au6/807 amplifier
  45. Thinking about building an S5 16LS 16W amp I've got some questions for the forum./
  46. Broskie "Unbalancer" - transformer specifications
  47. Tube chess.
  48. How Its Made - Vacuum Tubes
  49. Please help me understand power supply load
  50. 12AU7 - How absolute are maximum ratings?
  51. Tube rejuvination
  52. Article: Samsung brings back tubes in audio dock
  53. 1st build suggestions
  54. Parallel SE output
  55. Fixed Bias question
  56. vintage ua 610 schematic
  57. Which KT88 PP and which Transformers?
  58. Some more special small-signal tv tubes
  59. MR 67 Coupling Caps
  60. Help - YAQIN MS-20L schematic
  61. Power and Speaker cables
  62. Leak TL12+ with triode mode EF86
  63. diy tube dampers
  64. VTVM troubleshooting help
  65. PP amp crossover distortion
  66. Sanity check please? ST-70(-ish) power supply
  67. Thoughts of apparent noise on ground - due to power tx?
  68. hybride circlotron
  69. Clone
  70. 8156 Beam Pentode Compactron
  71. DOUBLE TRIODE (6N16B)
  72. looking for Tube I/V analog for dac schematic ?
  73. NewBee PPEL84
  74. Whooaa! Now we're talking.
  75. Cinema Engineering AT-18
  76. Back from school
  77. Amp ideas for my spare 3.3k output transformers.
  78. HEllo and a few suggestions please
  79. 1SH24B Pre-Amp (or buffer?)
  80. Anode cap for GU 29 / QQE06/40
  81. Back to back autotransformers for B+?
  82. Sound Valves M60 schematics
  83. Volume Pot for RH84
  84. Mengyue mini el34b
  85. Which Chinese integrated tube amp have the power for Rock Song ?
  86. Help on transformers please
  87. 300B alternatives
  88. Anybody using a tube amp in their car?
  89. What is a KT88-98?
  90. 6au6 line stage a bad idea?
  91. Making a Kron tube
  92. AY Symphonies preamp
  93. Need to Upgrade Tube Preamp Volume Pot
  94. Tubelab Simple SE low B+
  95. Filament AC or DC?
  96. rasping sound from Dared VP-16
  97. Anyone have any "small signal" pentode models?
  98. Power amp distortion for modern amps
  99. Help with EL504-based amplifier
  100. Tubes: Are they worth it?
  101. Radio Shack Boston Monobloc (fuse question)
  102. 829B 3E29 Pentode PPP?
  103. Fixed Autobias?
  104. Best wishes
  105. Radiotron A504 amplifier schematic
  106. Blown power tube - a short story
  107. Hickok 752A calibration?
  108. replace EL34 with EL37 !?
  109. Mono push-pull driver PCB
  110. Magnavox 139AA schematics, info?
  111. Anyone knows what driver tube on DowdyLama's GM-70......
  112. Building an amp around the QB5/1750 transmitter tube
  113. Instrument amp from '59 Lowrey donor chassis.
  114. cascoded gyrator loaded 6H9C to low idle.
  115. vacuum tube DAC and connection
  116. Dynaco ST70 II Right Channel Out
  117. ST70 Inrush Issue
  118. ECC88 OTL heaphone amp
  119. Help with deciding to build or buy Tube amp.
  120. Luxman LV-105 static on on channel
  121. equivlent of FU-50
  122. placing the volume control
  123. PP 300B ''transformer coupled''
  124. My First Tube Preamp
  125. Tube amp kit and speaker recommendations?
  126. First design GU81M SE triode
  127. Instruments & Amps forum - where is it?
  128. Power supply capacitor question for tubelab simple ss
  129. EL300 = 6FN5 / PL300 = 35FN5 tube
  130. 6U8 driving 45
  131. very low impedance white follower with 6H13C
  132. EL86 Any idea helps.
  133. 6112 and 6111 Mini-preamp
  134. Expert advice on what preamp to chose
  135. Harman Kardon DPR-7, Commander series pre/mixer
  136. input transformer - mumetal casing etc.
  137. Oil-filled caps: ASC versus Panasonic
  138. SOHA headphone amp
  139. Using a single triode as a .......
  140. Sonic Frontiers SFP-1 Phono Stage
  141. Help!! with attenuation.
  142. power up inrush current limiter - anyone using?
  143. Audioromy FU-29, Latest Model 828A Mini Review
  144. Vertical-deflection
  145. Drilling a hole
  146. Edcor CXPP25-MS-8K V Triode Z-565
  147. bad opt measured values
  148. Mu Follower Driver for Push-Pull
  149. Hickok 539 question...
  150. need datasheets for a phillips transformer if anyone has any
  151. Chicago power XFMR question.
  152. Coupling Capacitor - Pls Help
  153. Help please on Christmas gift
  154. Audio Note P-zero
  155. SE EL34 Schematic - What do you think?
  156. Playing with hybrid amp: SRPP + MOSFET
  157. 300B filament supply question
  158. KT88 Parallel Push Pull
  159. cheating life out of old tubes?
  160. dBu transformer ratings
  161. Dared MP-2a3c mods
  162. Output transformers (Wolpert)
  163. Using Mains Transformers as Outputs
  164. Tube just for show...
  165. first project - first post - poddwatt
  166. High power CCS
  167. Analog Summing
  168. My new el34 + 12ax7 VCT amp. (Need Ideas For my first headphone vacuum tube amp Too~)
  169. cascode tubes
  170. High Fidelity by Pilot (circa 1953)
  171. Hardware help please
  172. integrated amps 100 per channel
  173. KT88 mounting question
  174. Output Transformer question
  175. Angstrom Thermionic
  176. ECC88 tube buffer NEEDED !
  177. Paralell SE 807 Amp design
  178. Putting together a tweaker friendly amplifier!
  179. Tube chassis
  180. DHT headphone Hybrid-CF+
  181. Looking for specs on this Beyer Xfmr
  182. Resistors for Berning EA-2101?
  183. Uneven Plate Glow
  184. Parafeed transformer sounds thin
  185. Lightbulbs as ccs
  186. My AWESOME First DIY amp
  187. Cary audio design SLI 80
  188. A1538 OPT?
  189. Genalex A2900 Keep or Sell?
  190. 6CB6 Spice Model wanted
  191. XFMR Help?
  192. 12 volt to 300 volt inverter question for tubes
  193. These amps should be verboten!
  194. how to use PCL86 instead of ecl86
  195. PSU for Aikido (4x 12SN7)
  196. SCA35 and AU-70
  197. Analisys of power amp limitations of tube bias range
  198. DIY Phono Preamp ??
  199. NOS 211 RCA or National Union?
  200. Iron Powder + Resin Output Transformer
  201. The Radio Hat Challenge
  202. EU regulations
  203. Transconductance for kt-90 in plain english
  204. Craftsmen RC-2
  205. Valve Amplification Company V100
  206. Parallel feed transformer with SRPP
  207. It's heeeeeere!- Valve Amplifiers 4th Edition
  208. opera consonance phonostage-PM1
  209. Anybody Explain this Preamp shematic?
  210. The high-voltage collection
  211. Input transformer topology question
  212. JE Labs 300Bdx stereo - troubleshooting
  213. battery operated 12/24/48 Volt multiple tube OTL
  214. Bringing up long-stored tube gear
  215. About RH84 three channel?
  216. MCC with Fisher
  217. Directly heated cathodes
  218. Build recommendation
  219. Ortofon KS 591 - informations
  220. Oatley K295-extra space for tubes
  221. A beginner's tube amp to drive a pair of fostex Fe103e
  222. Tame the beast.
  223. KT88 and Hammond Transformer
  224. B+ Drifts down after 2 hours
  225. Power amp sputters on turnoff
  226. Yet another EQP-1A
  227. How to bias 6SL7?
  228. 6CG7/6FQ7 = 6N5P (6Н5П)
  229. #27 mu stage
  230. Compactron Regulated Power Supply
  231. Best sounding voltage amplifier for hybride.
  232. PX25 to 300B pins
  233. de-gassing power tubes???
  234. Heathkit 51-29 output transformers issure
  235. 6AS7 Model
  236. 26H choke good enough for a grid or anode choke?
  237. Russian 6R2P for small amp.
  238. Power transformer primary is open.
  239. Rectifier oddness
  240. First Tube Build, Thoughts?
  241. Output Transformers
  242. Lazy Sunday 6SN7 Preamp
  243. Audio research VT200 Biasing & Schematic
  244. finished my new preamplifier!!
  245. What would be the correct output cap for this OTL Headphone Amp?
  246. Full Bridge Rectifier With Tubes
  247. Looking for data sheet for GE JAN 6146W/7212
  248. Best Valve pre-amp match for ME 550 amp
  249. Fisher 500c
  250. From old Philips tube books , just for tube audio DIY friends !

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