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  1. Pushing 6p14p too hard
  2. Who can tell me in Rome where can i buy antique Vacuum tube?
  3. Is the YAQIN MS-12B (220v +-10%) safe to use in UK
  4. Priboi biasing
  5. Whither Westrex ?.
  6. Tube Phono Pre-Amplifiers
  7. Pioneer SA400 -- Headphones hum, speakers don't. Why?
  8. DIY tube amps for surround sounds?
  9. Rotary switch for attenuator
  10. What is Matise circuit?
  11. 6bq5 red plating
  12. Technical questions about Melos MA-333
  13. idiot proof mono push pull 6l6gc schematic wanted
  14. Passive Preamp Mod help
  15. KT77 OPT impedance
  16. i think i'm thru with 2A3 tubes
  17. VTC4U? Is that the name of the tube tower/shroud seller?
  18. 8417 triode el.. Mod??'s
  19. Gramp's Zenith MLT 15
  20. Class A tube amplifier Kit
  21. Stromberg Carlson ASR 433
  22. quads11&22 back into service
  23. New Tubes for sale
  24. Best design for Lundahl LL1679/PP
  25. 12U7 LTP vs. 6922 cascode
  26. Need help calculating value of balancing resistors
  27. 12ax7 12au7 preamp
  28. Western Electric 471A...any information ?
  29. Please Reply
  30. tube line preamplifier circuit
  31. 6L6 Ultralinear cathode Follower
  32. Grid current operation
  33. 431 based screen supply
  34. Where did all the money go?
  35. Hyperx soft start any good for valve amp situation?
  36. Class AB2, Class B, and Hifi
  37. PP 6b4g bad / distorted channel diagnostics
  38. Transformer usage ??
  39. Phono Amplifier
  40. Need EL84 Brand Identification
  41. RCA Octagon dating
  42. Most Accurate Bias Testing Method
  43. ASL AQ1003DT schematic or manual?
  44. Penta brand 6L6GC info?
  45. Mod to SE 6SN7 - 6V6 amp
  46. adjust filament ECC82/83
  47. Help ID this OPT
  48. Help? 6n23p cathode follower
  49. DC Heater Caps
  50. Load Line and Biasing for Class AB 6550 power amp
  51. Amp project help needed
  52. LTP with CCS and feedback
  53. Clarion simple 2A3 amplifier
  54. Another question about plate curves and pentode load lines
  55. 5V Indrect Heated Rectifiers?
  56. Easy CCS
  57. I just setup my mimiwat n3 with a pair of Energy cb-20 speakers
  58. First watt F2/little dot MK III
  59. Old Motorola console tube amp, fuse problem
  60. How much performance difference w/ this config?
  61. 6P8S datasheet, help !!
  62. DHT IMD
  63. How to calculate OPT transformer windings
  64. Newbie Questions
  65. plate curves and max ratings questions
  66. Heater-cathode DC conduction resistance
  67. EL 84 Capacitor Equivalent
  68. How do they get away with this?
  69. well-loved Sherwood "popping" prob mouse pee
  70. Tube Newb: 12sn7 and 12sl7 interchangeable?
  71. Totem-Pole OTL with 6c33c tubes and 0.079 % THD at 20 Watt
  72. sonic frontiers sfm-75
  73. Chinese tube amp mods?
  74. PSU for JE Labs Simple 45/2A3
  75. frustrated ,Bought a 845 NOS - springs are discconnected need help
  76. Running water sound in amp
  77. Peerless 16458 output transformers
  78. Noisy high-gain preamplifier
  79. Cheap ($235) SE Tube amp kit, transformer and chassis on ebay
  80. 2A3 single plate RCA/Cunningham tube prices
  81. output transformer power rating
  82. Rectifier Foward Voltage?
  83. Help With 6Y6 amp
  84. What are 12AT7/ECC81 power drivers ?
  85. Help with these Russian GU50 tube amplifier
  86. Eico ST-70 Supermods
  87. Mullard PZ30, how's its Peak Inverse Voltage?
  88. 12AU7 in cascode configuration
  89. Bad tube in old record player?
  90. cathode caps
  91. Aikido HV PSU
  92. Distance between 6N23P and a cap?
  93. solid and strand wire in amp
  94. Phillips Music Sudio
  95. LTPI Grid stopper value affect on harmonics
  96. WTF. What's going on here.
  97. 7-pin pcb mount socket with shield?
  98. SIMPLE remote volume control with alps motorized pot
  99. Hybrid Partial Feedback SE Amplifier
  100. HV +B Connector
  101. Eico experts needed: PEC in 2050 driver stage bad
  102. Best sounding linestage/buffer topology?
  103. Using ECC88
  104. what tubes should I upgrade a mini watt with I currently have the stock 6p14 and 6bq5
  105. EL34 cathode bias PA
  106. Tube Amp Art
  107. Quick OT Question
  108. Power Transformer
  109. ampex 354? some questions
  110. Good power Filter Capacitors
  111. Fisher 101d blow fuse
  112. Jolida 502A lost output...?
  113. Codename "Tapyrus", my ongoing DIY headphone amp
  114. RIAA preamp with DHTs
  115. Dynaco Mark VI feedback values
  116. Eagle PCB
  117. Ode to Tube Rollers
  118. switching tubes: good or bad idea?
  119. COnn Organ Amp DI266 Info 12v6GT tubes
  120. Please help me figure out why my plate voltage is too high here
  121. Yaqin MC10L Question for the Guru's
  122. PP PSU: How much ripple is too much ripple?
  123. Bypass caps in choke PS
  124. Grounded Grid TRANSCENDENT line stage
  125. Battery Powered Tube Amp
  126. 5Z4PJ 6N2J
  127. Almost there! opinions are welcomed(6C33SET)
  128. Speaker impedance and amp matching?
  129. r core or toroidal output trafo for dynaco st70
  130. Heathkit Returns
  131. How to get started
  132. WANTED: schematic for Eico 2050 Classic Series
  133. winding an output transformer
  134. 12AX7 vacuum tube pre-amp?
  135. Audionote kit L4 and L6
  136. class a audio amplifier 5w with ic ne5532
  137. Fate of my Heathkit W7-M amplifiers
  138. Newcomb E-10B Amplifer
  139. Telefunken RV218 power triode
  140. Crowhurst High Power vs Low Power Amplifiers
  141. damper diodes
  142. EL12N in JCM800 clone
  143. Amp design exercise, mentorship needed...
  144. Need help with series filament 25l6GT amp
  145. Dynakit Mark IV Oscillation
  146. Telefunken C3M data
  147. Can a tube guru help with nu>lambda conversions?
  148. plate dissipation vs brand
  149. Solid-state replacements for PAS2/3 rectifiers?
  150. first integrated amp
  151. st70A mod.kit
  152. Grampian 600u
  153. Suggest amp to drive mangnapan SMGa/MMG
  154. Yaqin Tube Amplifier
  155. Jensen JT-11P-1 on tube amp input
  156. Amperex PQ 6922 code decifering?
  157. 12ax7 driving a DHT out, why not?
  158. unknown Rogers Pre Power
  159. power tube power scaler
  160. Tube Rectifier with transformer without Center tap
  161. Can I use this stuff (does it have any value?)
  162. Full regulated power supply for 12au7(preamp)
  163. 6C33 OTL Circlotron
  164. Unknown output transformer
  165. Building a tube pre/amp copy (6V6)
  166. 6922 pin i.d.
  167. KT88 Push Pull Amp using transistor driver stage
  168. 45 DHT HT Supply oscillating - help!
  169. exceeding plate voltage of the output tube
  170. Fisher 101D
  171. Looking for old amp info
  172. Restoring an old tube amp
  173. Noob Tube Preamp Finished Kit Transformer HOT!
  174. the tv underrated tubes
  175. Headphone Amp
  176. What is needed to drive 86db speakers and sound *good*?
  177. ef86 - plate voltage
  178. Output signal distortion
  179. Minimum Acceptable Gm
  180. Anyone have experience with the 6SD7GT tube ?
  181. Identifying an ultralinear OPT
  182. A good sounding EL34 PP sch please
  183. THE CHAMP CBA-20807 1000 Watt Valve amplifier
  184. ST-35 First Build
  185. Identifying EL34 tube?
  186. Solid state relais in stean of standby swtich
  187. $75 tube amp kit on eBay???
  188. variable power control
  189. reccommend a voltage doubler for bias?
  190. ecf82 pentode instead of ef86
  191. K-12G vs. K-502
  192. eq in a tiny Directly Heated Cathode amp
  193. Anyone ever try 6C33C SE with Aikido drive?
  194. Help with 1:2 line level input Tx's
  195. 112a preamp need comment please
  196. Excellent (Modified) Williamson Treatise
  197. Vintage Hoffman Stereo Amp Problem - fump, fump, fump
  198. Chicago BO-14 100w amp
  199. volume pot question, help.
  200. Simple B+ delay circuit for tube power amp?
  201. My small tube does it work?
  202. Approaching the best primary impedance on low or high side?
  203. CT Trafo and floating psu for circlotron?
  204. Unknown tube, need help to identify!
  205. 6L6 guidance needed
  206. Output Power Question
  207. Can the 7AK7 computer tube work as audio output tube ?
  208. Burned in Power Tubes?
  209. Driver Match for K-12G TubeAmp
  210. KT90 to KT88 with autobias
  211. SRPP DC working condition for Rk1=2Rk2
  212. NOS Russian Reflektor 6P6S (6V6) tubes were a pleasant surprise
  213. the 'sound' of a CF
  214. Found iron recycling - what possible uses?
  215. Class AB PP - is it any good ?
  216. Stereo to mono by paralleling outputs?
  217. BOX in the making
  218. How about paralleling output tubes
  219. Are they basically Borbely hybrid circuitry?
  220. Service Life at Low Plate Current
  221. Sophia Electric SE Transformers for 813 "Super Schade"
  222. 10W suitcase amp
  223. PP OT made of 2 transformers
  224. If I change B+ do I have to change the circuit?
  225. PhonoDude
  226. Lafayette Phono/Reverb /Center channel amp
  227. Seller recommendation needed.
  228. Jeffrey's Super Circlotron (hybrid)
  229. Request for obscure heater specs
  230. Jolida JD1501RC Service Manual / Schematic
  231. 80W amp with a pair of EL34
  232. Epiphone Valve Junior to HiFi Conversion
  233. Serious Distortion on my DIY Toccata Phono Preamp
  234. Voltage Change9115v/230v) of Audio Research amplifiers
  235. HF oscillation with no load, but only on one channel.
  236. Tube innards
  237. Looking for a tube amp
  238. What happens If I use too weak output transformer?
  239. Chinese amp: 2A3 6SN7 6SJ7 5Z5P push pull
  240. 6C33C based Version for Welter's Single Ended Amp (enhanced Forward Transconductance)
  241. Single Ended EL84 B+
  242. Electronic transformer filament supply
  243. Which Salas HV shunt regulator should I choose?
  244. Traced an old valve with no specs - thoughts please
  245. Dynaco PAS 3X PSU mod
  246. CCS's for CCD line amp?
  247. tube life
  248. For tube amps w/ high output Z - Parallel R cross spkr?
  249. High and low impedance output preamps
  250. Cheap & Well Made Chinese SE EL34 Amp

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