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  1. Holy cow! Can anyone tell me why this wire is so pricey?
  2. EL34B 6N9P 5Z3P amplifier kit - any thoughts on schematic?
  3. 4 x EL84 in UL PP, 470 B+!! is this right
  4. What amp is this?
  5. PS Setup For Testing
  6. OTL designed by Tim Mellow with 4 6C33C?
  7. Quick question on this schematic
  8. Variac, how to ?
  9. Tube data sheets - inaccuracy
  10. Benny's new ForeWatt SRPP pre amplifier
  11. OddWatt PP UL amplifier from scratch
  12. OPT Impedance
  13. Rectifier Valves
  14. WE311 amp
  15. Sherwood S8000 transformers
  16. yaqin MS-12B Search for Diagrams
  17. EICO HF-30 - Schematic
  18. 12AU7 Phono Stage
  19. How to install a motor run capcitor
  20. Sanity check on B+ regulator
  21. 6B4G PPP idea
  22. First OTL breadboarded
  23. New amp build
  24. Tube Parametric EQ - Idea looking for clarification
  25. DHT heater supply
  26. MC/MM Phono Pream PCB
  27. Help Identifying Old Westinghouse Tube Amp?
  28. GM70 SE Amplifier
  29. OPT considerations
  30. Help - the pre amp I made is not working!
  31. Aikido tube connections.
  32. EL34 PP output tranny questions
  33. DC heater voltage 6 volts or 12 volts?
  34. Dynaco st70....Can I use 6 ohm speakers?
  35. Aikido vs. Foreplay
  36. I found a valve amp in my garage...
  37. Separate PSU to Amp connection
  38. cary SLA 70
  39. Help!!! My Audioromy FU29 amplifier was fried!
  40. Help!!! My Audioromy FU29 amplifier was fried!
  41. Take a look at my transformers
  42. miniblok 2 distorted sound
  43. Appropriate replacement OPT for Fisher 30-A with 2.5Ohm Secondary
  44. For hk citation II owners\experts.
  45. Dynakit Mark III amplifier
  46. Transformer in reverse current doubt
  47. CELLINI-2 a hybrid
  48. Need help starting
  49. ARC (Audio Research) VT50
  50. mixed mode bias
  51. 2C52 datasheet
  52. Yaqin SD-CD2 tube buffer - upgrading stock tubes
  53. 12v Tube amp
  54. Is this ok
  55. 12ax7 Bass Preamp Power Supply Question.
  56. Help a newbie out with his Sherwood S-800iii
  57. A&R 4008 output transformers
  58. Kulish Circuit
  59. A little digression= read on
  60. Sweep tubes and G3
  61. CCS - Help!
  62. Another odd-ball PA amplifier
  63. Question About High-Fidelity Magazine 195x - 196x
  64. The Heathkit MA-12 - A Mullard 5-10 In Disguise
  65. who have schematic of Phenix OTL G3?
  66. Drive requirements.....
  67. KT88 hybrid amplifier
  68. 2300 ohm vs 5000 ohm output trans question
  69. Has anyone used this regulator?
  70. Diy HiFi Supply Tram Mk2 DHT OTL Preamplifier
  71. Current mirror circuits
  72. splitter/driver stage
  73. Would someone explain this amp to me please?
  74. What am I experiencing?
  75. 6U10, 6AC10, 6D10, 6AV11
  76. My debut into the vacuum world: Yarland FV34B
  77. Resistor value tweaks for Radford STA35
  78. do you own a chinese tube integrate? does it.... smell?
  79. Needs help to find transformer
  80. 12AU7 / 12AX7 push-pull
  81. Subwoofer connection?
  82. Ultra-low Noise Valve Regulated PSU. How to?
  83. One channel has less glow
  84. 6l6 tube amp troubleshooring progress
  85. Baldwin organ transformers
  86. has anyone used a chip for an input driver to a 2A3 or the like??
  87. Good PSU for HT upt to 15mA??
  88. Edcor transformers have arrived, but really puzzled!
  89. Single tube, Single ended, 20W, impossible?
  90. Stan's Aikido Build
  91. Power transformer rating
  92. 7w 300b vs 350w Car audio observation (car loses)
  93. Seriously considering doing an OTL - but . .
  94. Emulating remote cut off
  95. Cheap Sakura Hybrid Tube Amp Modification
  96. screen tap on OPT
  97. Understanding Cathode Decoupling
  98. How to test interstage transformers?
  99. DIY Tube Mic
  100. Modified 6C33C
  101. Counterpoint SA-3.1 Rebuild
  102. 6V6 flare at start up
  103. Tube aging, in-circuit test?
  104. HV Regulator board
  105. What kind of top cap for 6V7G?
  106. High voltage and heat sinks
  107. GM-70 family with top cap anode?
  108. testing 8417's on mercury 1000
  109. 6N3 Tube Preamp with DC-DC converter
  110. Question About Worn Tubes
  111. help ID 4-500 old stock tubes
  112. 6SN7 SRPP preamp
  113. Reduced Heater voltage to reduce noise
  114. ECL82 monoblock 'spud' and a question
  115. Small Tube/SS hybrid amplifier design 9V
  116. Plate load impedance
  117. Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer
  118. Good idle current for NOS 7868's
  119. 6N2P - WHAT THE?????????????
  120. Got an old Westinghouse radio today!!!
  121. Distinction between Driver and Output stages
  122. UL P/P KT88 Class A
  123. Problem with 12ax7 phono stage
  124. Was ist das?
  125. Rset values for IXYS IXTP01N100D
  126. Dutch Book
  127. Tube amplifier chassis damping
  128. How the heck do I solve this problem????
  129. Pentode to Triode Operation
  130. AbouT the PSU II simulator & the "Cockeyed Bridge"
  131. GM70 bias & IT ratio question
  132. Transformer or choke sealed with metal case
  133. Projector 6V6 Tube Amp rats nest p2p
  134. micro pre amp
  135. Aikido - calculating Rk for new tubes
  136. Steady thumping noise in preamp
  137. Leak Stereo 20 hum and buzz problem
  138. 5V AC maining for filaments
  139. Topology for Schade
  140. Thorsten 6SN7 Line stage.
  141. 12v B+ Tube buffer 12AX7
  142. 300B preamp - best operating point
  143. home made tube amp with 12v b+ how to build one?
  144. Engineer's Amp
  145. Show My Tube Headphone Amp [Add-On Modulars Design Supporting IPOD/IPHONE]
  146. FFT for adjusting tubes
  147. Voltage divider instead of expensive volume pot or stepped attenuator.
  148. Long-tail pair phase splitter
  149. LM317 calculator for filament circuit
  150. Self-Biased Cathode Follower Output Point
  151. filaments power supply
  152. Power tube buffer
  153. Easy Way To Reduce 251V to 235V?
  154. EL84 Push Pull 25-30 watts
  155. Exploded view of valves
  156. Show us you COMPACT tube amps !
  157. HV Regulator
  158. Help with my new system
  159. The 3W Hammond 125ASE output transformer
  160. Different brand valves
  161. quad el84 or PP el34
  162. to MC30 or not to MC30
  163. unbypassed cathode resistor
  164. Does this transformer work?
  165. Max grid resistance for GM70?
  166. Stacked power supply HELP!
  167. Parallel pwr supply chokes for add'l current?
  168. Need help to verify Amperex 7119's genuineness
  169. Need help/advice on a problem with console amplifier
  170. Getting started with my VERY FIRST project
  171. PCL Vintage Amp VA1956 - transformer issue
  172. Help to Identify
  173. 300B based preamp....looking for schematic
  174. RH84SE, use as headphone amp ?
  175. The New Yaqin/Music Angel/Meng & Others Discussion Thread
  176. Power triode bias by tube rectifier
  177. Two questions on IR volume control
  178. 25 watt output tube
  179. DC heating my 300b
  180. RNT-900 regulator
  181. KT61 Equivalent - Ping Waveborne
  182. Running a tube without heaters
  183. SE-BAL-SE Switching
  184. What makes is stereo?
  185. Triple Checking Calcs: metering bias with mA meter
  186. EL84 & 12AX7 Amp possibilities
  187. Weird issue with tube driver.
  188. 6E5P
  189. 6B4G / 6S4S Biasing Question
  190. Quick tube wear question
  191. Looking for a tube amp
  192. Internal placing of components
  193. Preamplifiers v power amplifiers
  194. LP2 dht driver
  195. hammond 1650
  196. Load For PSU
  197. *PING* Tubechimp
  198. Revamping of a Michaelson & Austin TVA-1
  199. 6V6 Behavior W/Fixed Bias (SE Amp)
  200. Low noise, low microphony, low hum valves
  201. 6L6 / 12AX7 push-pull
  202. bowei amp for audionote ax-2 speakers?
  203. Yet another Priboi thread...
  204. Help Old Radio Philips
  205. Distortion discussion from mosqueto Hybrid thread
  206. Sovtek 6N1P Microphonics
  207. ECC86 / 6GM8 Radio Receiver Help
  208. Los Angeles
  209. Op point for 6au6/6gu5 in P-G feedback 6550
  210. Tube Pre-Amp Schematic Needed
  211. find a YAQIN 5881a amplifier
  212. 11N90C in the SBCCS circuit
  213. Help replacing a PSU choke - How to choose choke
  214. does this look like a joke to you?
  215. Electronic Choke for Valve Amplifiers
  216. Sockets for a WE429A
  217. To bypass or not to bypass...
  218. DIY Curve Tracer
  219. 300B filament winding center tapped?
  220. help me decide,headphone amp - parafeed or normal tx ?
  221. 7060 vs 6AN8A
  222. Psu
  223. EDCOR Output transformer for 300B
  224. 80 or RGN1064 Scenario
  225. TUBENEWB - Quad KT88 Monoblocks
  226. CCS in Differential phase splitter?
  227. Need schematic for Smart 2x150vt
  228. Antek OPT
  229. 6DQ6 for audio power amp?
  230. Anyone identify this Mullard?
  231. My Mullard 5-20: some photos and a question
  232. Tube can work in low volt~~fix your knowledge
  233. A problem with a tube receiver
  234. Where I could find tube in San Jose
  235. 6Н30П spice model for MicroCap ?
  236. Transformer input and resonance
  237. GE6111 Preamplifier
  238. Where to buy audio tubes in Europe
  239. Play iPod into 1955 Record Player's Tube Amplifier
  240. To Schade it , or not..
  241. questions on input stage
  242. Planar/Lighthouse triodes for Audio?
  243. 211 SET 40W output design and mfg.
  244. Volume Control with Loudness and no Taps
  245. Use for 4k PP (non UL) OPT's?
  246. Filament Autobias
  247. Shelby NC Ham Fest
  248. 2A3 Spud
  249. Resistor as a load
  250. How to balance pushp pull DHT finals

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