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  1. Noob question
  2. Futterman H3 Set Up
  3. Any tube guys here use a MiniDSP
  4. Should Output Transformers be replaced
  5. Quad II questions
  6. MY OTL Tim Mellow-ESL 63 PROJECT
  7. Zobel for REDD47 w/ HA-100 Inpu
  8. Pentode P-P - cathode biasing for A and AB
  9. Why a Headphone Amp?
  10. How little B+ ripple do I really need?
  11. Need good EF86 based RIAA preamp.
  12. Which Tube amplifier should I build first?
  13. Sound Practices Magazines, Complete Set 98% perfect
  14. 6L6GC in Push Pull Class A - how much power out?
  15. ECC83 DC Heater Supply - without CT
  16. PPP EL84 monoblocs: i knew then what i know now...
  17. zener, voltage devider or 02A
  18. DHT heater current draw - how fast?
  19. Rca sa752
  20. Audio Research and Octal Pre's
  21. Scott 299D
  22. Unison Smart 845 big problem
  23. Need help with driver idea for 845 amp - have a few ideas
  24. Input impedance on cathode follower stage?
  25. Picked up a box of tubes for $5.. What tubes are usable?
  26. Need help on potentiometer.
  27. A Raven preamp (mk2) finished
  28. need help searching for ground
  29. Pre-amp transformer output
  30. Boyuu EL34 A9 Tube Amp
  31. Hybrid 15W, want feedback - work in-progress
  32. SP12 and PH12 Pre and Phono from Vacuum Tube Audio
  33. Which tube amp for Telefunken-tlx3 loudspeakers?
  34. Burned up a tube - want to be sure I know why
  35. Output Transformer Windings in parallel
  36. New tube tech from Korg
  37. Got some PX4 valves from an old radiogram
  38. At the start: Triodedick´s Monobill Classic KT88 Monos
  39. Choose your harmonic distribution: which sound better?
  40. Recommended HT current limit for old stock power transformers
  41. preamp circuit
  42. Low impedance headphone amp
  43. "Earthing" in DIY tube preamps
  44. Tube amp help
  45. How to draw a dynamic load line for cathode bypass triode like 12AX7
  46. Common Grid design
  47. 6AW8-A
  48. Push pull amp without GNFB
  49. No filament voltage
  50. Selecting Component Values for Simple Current-Feedback Amplifier
  51. 4 Blown Soft Recovery Diodes...Are TV Damper Tubes more Reliable?
  52. Just got a nice EL84 based receiver
  53. Is there any good current Production 6550s?
  54. Building the Damn Good 300B
  55. convert trashed kolster k20 into tube amp?
  56. Junkbox Hero
  57. KT150 curves by Sofia
  58. My new EL84 Amp
  59. 1955 Bogen J330 Mic Input Problem
  60. parallel el84 output pp. shared coupling caps?
  61. Will a Western Electric 422A substitute for a 5Y3?
  62. Question for a moderator
  63. bottlehead quickie schematic
  64. RCA 6146B sub for 807 or 6L6?
  65. Leak monoblock hum
  66. Eico 2036
  67. Heathkit iT-12 signal tracer to much gain??
  68. Valve Monoblocks - am I being realistic?
  69. Aikido Headphone Amp and PS1 Power supply
  70. Transforming a triode into a pentode?
  71. New to amps - Long-tail pair and heater hum
  72. Experimenting with the Aikido 12Vac kit
  73. Strategies for Implementing Negative Feedback in a 12ax7 Line Amplifier
  74. Output Transformer Impedances
  75. PP 6l6 class ab...advice needed
  76. 300B
  77. 12AX7 EL34B TUBE AMPLIFIER
  78. UK info please
  79. PAS 2/3 RIAA Modification
  80. My Homage to the Earmax Headphone Amp
  81. Aikio Line Stage
  82. Lite Audio LS 58 schematic
  83. Lite Audio LS 58 schematic
  84. Love those triodes
  85. Differential Pair with negative feedback
  86. Quad II Eighty Schematic?
  87. Adventures with Aikido
  88. Beard BB 100 and Beard A35
  89. Noob is about to press the BIN button and buy a Chinese tube amp kit. Save me/ help?
  90. Ebay Kit EL34 6n9P 5Z3P Build Thread.
  91. Sakuma 46 / 801A Circuit
  92. Tube Manufacturing at Expo-Pul
  93. Philips EL6410, how does it sound?
  94. tube amp power help
  95. Video from the Czech Tesla Tube factory
  96. Alans' rantings
  97. 3 x 3 Tube amp 30 watts
  98. Maximum allowed capacitance after gas rectifiers
  99. PSUD2 rectifiers list
  100. EL34 amplifier with these transformers
  101. Aikido Octal Dual Mono for Dummies... Help me.
  102. Monster Trans or Really Good Doorstop?
  103. The correct way to wire DC filaments 3B7 DHT
  104. Haller Circuit Problems
  105. Need recommendation for VERY basic amp project
  106. Recommendation on tube buffer?
  107. For Your Consideration: Unity Coupled Plitron Amp, No Bootstrapped Driver, No GNF
  108. Tango Transformers - any unique push pull circuits?
  109. newbe at designing tube amp
  110. Need help with microphone preamp.
  111. Trouble shooting vintage Harman Kardon A250
  112. Coating on Hammond Power Transformer
  113. Small tube amp for PC
  114. CCS dissipation
  115. 6SL7 - grid stopper values
  116. HELP - Laying out footprint for 9 pin tube socket
  117. Telefunken Magnetophon 104 - Keep or strip?
  118. Transformer rewinding or repair needed.
  119. Sun Audio in the USA?
  120. Wyetech Opal 6SN7 tube preamp, any DIY kit sound even close?
  121. KBG capacitors
  122. Praise for the 6N6G
  123. DHT equivalent to 12AT7?
  124. Why high voltage in coupling caps?
  125. BIAS Consonance M800SE
  126. SE ECC83 - EL 84 - EZ 81 - 1964 !
  127. Name That Design!!
  128. Distortion expected in SE DC coupled 26/45 amp
  129. One Channel is Louder than the other on my Tube Phono Pre
  130. Need a Zobel Network (or RC shunt) in tube amplifier?
  131. Aikido 12VAC Help needed
  132. Novarria TU-30 output transformer
  133. Question on Schematic
  134. CJ PV-10A
  135. Mcintosh C2200 ReCap
  136. simple tube amp for music
  137. SE Parafeed Signal Return ?
  138. RCA VC274
  139. Heathkit w5
  140. tube rectifier for 1000v AC
  141. Tone Control Intercept Point on TU 8200
  142. Help with transformer and power switch wiring
  143. Mullard 5-20 iron
  144. Hard data on HP928
  145. Glassware Audio
  146. 5U4G problem
  147. Schematic för mono el84 SE wanted
  148. qualtek power module
  149. Low Static Hum Issue
  150. Look over my whacko schematic?
  151. PSU inrush current
  152. Heathkit A7 Output transformer
  153. THose lovely triodes
  154. Just picked up a shoebox of tubes from Craigslist
  155. Lower the primary impedance of the OPT to reduce distortion?
  156. Parallel/Series heater question
  157. Jay's Cheaterpants Hong Kong Marantz 7 Clone Build-Along
  158. Unused half of dual triode in low gain input stage in mono blocks?
  159. 12AL8 PP Amp Low Volume - Is this all or i can get more?
  160. Power supply resistors
  161. Aikido Headphone amplifier
  162. preamp
  163. Resistor question
  164. How to turn Salvaged Parts into Projects..
  165. Output polarity?
  166. Help with this circuit
  167. Doing silly stuff for fun
  168. Modern Mullard head scratching
  169. Leben cs660p un identified component
  170. KT88 or 6L6 High-mu triode curves
  171. Edcor 240V primary 50hz humming
  172. Aikido quesion
  173. Why 6L6 is not more popular as power tube?
  174. 304TL SET schematic redesign. EML-20b Alternative?
  175. Question about Mullard EL84 Aplication note
  176. Magnavox tuner preamp 570111
  177. Tube amps on E-Bay
  178. Input, Output and Transfer Capacitance Question
  179. K502 Mods
  180. filament supply rectifier
  181. Triode as Voltage-Controled Dynamic Resistance in Compressor/Limiter
  182. RHSpud: Novice build
  183. 2A3 Amp - Not Another One...
  184. 12b4a pp
  185. replacing ECC82 with ECC99
  186. 2A3 input sensitivity
  187. Amp for JBL 2447 driver?
  188. Rare Philips 12ax7 Code Need Help
  189. Two quick questions on 35W4
  190. To convert Novar pins for Magnovale pins
  191. Mingda mc7r late design tweaking
  192. PSU for KT-90 PPP
  193. Noisy amp
  194. Book Recommendation for Newbies
  195. High power GU46 SE amplifier - help with certain issues
  196. Boyuu hifi Equis A10 EL34B+6N2 SE Tube Amplifier with 5Z4P rectifier: review and mod
  197. Unknown SE output transformer wiring
  198. Class A output without all the heat cheat
  199. Grid leak bias - Easy to overload?
  200. How about LTP with degenerate resistor?
  201. 1200 vdc capacitor tube amp.
  202. Telefunken OPT
  203. Fixed bias question
  204. Question about loadline in Morgan Jones
  205. Please explain this power supply...
  206. 6SN7 - EL84 SE with interstage?
  207. 211 amp test. Square wave measures
  208. SAC thailand OPT for 211/845
  209. 6P21s
  210. 6L7M, Is there any use in audio?
  211. 958a Line Preamp
  212. What capacitors do i need for this?
  213. Experience of the TentLabs Bias control modules?
  214. Simple Line Stage Topology
  215. compound/hybrid amp
  216. 6CJ3's in full wave rectifier
  217. CCS anode load overcomes 3/2 law non-linearity
  218. EL84 PP OT design for amp project
  219. $3k o/p XFR
  220. Jadis Factory Tour
  221. Considerations for Tubelab Simplse
  222. "budget" headphone amp
  223. Power Pulse Tetrode for Audio
  224. The SE UL 6P41S USSR
  225. buzz from dacmagic on kit st70
  226. WE 350B and WE311B available
  227. How determine p-g1 capacitance in trioded pentode
  228. Why Is My Single Chassis #26 PreAmp So Stable!
  229. Rare tube
  230. Allan's rantings
  231. Tube Amp problem ?
  232. Tube preamp SS PS slight thump like dead wax on an LP
  233. Hum if volume control between midpoint and max; No hum if volume knob at max or zero
  234. SET's first ripple in a big wave ? Here it is . . .
  235. Fourier Chassis for the shipping costs
  236. 6P3S/6L6GB Amplifier from scrap parts :)
  237. Choke loaded 6ax4 bridge
  238. Transformer and choke orientation question
  239. Why some people want DC coupling in power amp?
  240. want to diy a tube preamp using only 12 volts help
  241. Russian 6p3s??
  242. Single-ended 8w amp
  243. Hovland HP 100
  244. Simple Line Stage Expanded
  245. Bridge Rectifier with Fullwave Tube
  246. Can anyone help diagnose this SOHA II amp channel?
  247. Schade and the 6C33C
  248. AMC 3030 annoying ripple noise
  249. Question and comments on SE vs PP by Eddie Vaughn
  250. 6080 PSE output Tx?

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