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  1. I've made an awful mess...
  2. Any input for a tube noob's first attempt? Flea Watt 12b4, 6dj8, low B+
  3. HV scope use
  4. Kolster-Brandes er30
  5. Buzz that goes away when input grounded.
  6. Hovland HP-100 tube replacement
  7. Dynaco ST-120 Turn On Pop or Problem
  8. Grounding two channel preamp sharing a psu.
  9. Convert hybrid amp to pure tube output?
  10. Please Help me with this tubes
  11. resistor maximum voltage rating
  12. 211- 6e5p full amp. The first setps
  13. E810F and general pentodes design question
  14. Pop goes the bias cap.
  15. High Power Single Ended Triode, Design
  16. Yaqin MS-6V6 vs. Markhill MS-6V6
  17. Schematic please: Luxman MQ-70?
  18. Aikido tube preamp with Tortuga LDR volume control
  19. Type 37 tube preamp
  20. Figuring out a KT88 datasheet?
  21. Power supply 260V for tube preamp
  22. Aikido Tube with Tortuga volume control project
  23. Adding a pre out to amp
  24. One or two ECC82 for two channels (crosstalk)!
  25. Red Pilot (240)
  26. 77:1 Output Transformer Question
  27. Power transformer recommendation Kt88 SE and JE labs Riaa
  28. Tube output power for OPT calculation
  29. 6sn7 tube anode folower question?????
  30. Goldox 9300
  31. good quality/sounding preamp advice
  32. PL84 schematic question.
  33. YouTube Video: 12AX7 comparisons.
  34. How many volts ???
  35. Greetings all/ (newbie) Need Advice!
  36. Psud and Single Ended Amplifier
  37. Socket Combiniations
  38. From Potentiometer to Stepped Attenuator
  39. No need for bleed resistors on Fisher 90-T
  40. Sophia 300B+ carbon
  41. Capacitor Temperature
  42. PL519 amp SE
  43. C3g Headphone design - will this work?
  44. Luxman 2A3 amp SE
  45. Capacitor on Aikido Power Supply Sampling Circuit
  46. Well, what have I done now?
  47. Aikido CF cathode resistor?
  48. D3A - 6P45S/El519 SE "The staircase" my first h-end amplifier.
  49. SET Cathode Biased vs. Fixed Bias?
  50. JAN6418 pre-amp advise
  51. SOHA II amp tripping
  52. 6JN6 LTspice model?
  53. unusual output transformers, what are they for?
  54. Cheap power amp kit with 6N2 + 6P3
  55. KT88 AMP I'm not sure about power supply
  56. buzz from tubes
  57. Good Power Supply??
  58. HK guitar amp - help with repair
  59. Audio Research SP6C
  60. Junk Audio Project (pics)
  61. SE SV83 Paralled Tube Amplifer
  62. Hum in SVP preamp circuit
  63. Advice/tips on tube preamplifier wanted
  64. Transformer Windfall. Now what?
  65. I am being cautious - need to install a ground plug
  66. My first scratch build (6AQ5 SE)....
  67. Pop, Pop, Pop, Pop, Pop
  68. what is this valve? and what is it for??
  69. Lazarus cascade basic preamp
  70. Seperate Power Supply Chassis and Grounding
  71. How To Solder Tips and Tricks
  72. Another CD player tube mod, TDA1541 with transformers and triode cathode followers
  73. PCL86 - Worth a try?
  74. Audio use 3D6/1299 ?
  75. How HOT should a LM317 get?
  76. KT88 amp questions
  77. Restoring a Motorola HS-1048A amp
  78. Please look at this schematic and tells me what have went wrong
  79. Lacking bass response after re-cap
  80. Generate a negative bias voltage?
  81. hammond 369ex instead of 269ex
  82. Recapped a pair of monoblocks
  83. Top Secret!
  84. Toggle or Rotary Switch for Phono Inputs
  85. Flexible tube (or SS) electronic XO
  86. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  87. Transformer revers use question
  88. Fixed bias, cathode feedback?
  89. spudnik, spudMiG ?
  90. I need the KT120 base dimensions
  91. Need help with chassis layout.
  92. tube amp ID ?
  93. GU50 filaments voltage!
  94. Does anybody have an RCA RS171 Schematic
  95. Opinions wanted: Low Z SE power supplies
  96. DC heaters, best way to bias ?
  97. Ignition coil as SE OPT
  98. Opt color code identification (Onetics)
  99. Drawback to Larger Capacity Output Transformer Than Required?
  100. Send me some pictures of your amps
  101. leak stereo 60
  102. B2 Spice V5.0
  103. Mains Fuse and Switch Best Practice
  104. Identify these vintage tube amp rivets
  105. RCA ORTHOPHONIC LMI-32216A manual copy needed
  106. Question on strange 6l6 schematic symbols
  107. Resistor value?
  108. Paper / plastic hybrid capacitor
  109. ST70 chassis polishing
  110. Octal to RCA
  111. KT120 plate load for 150+watts
  112. Need a copy of Aikido 5687 manual pdf
  113. Nutshell Raven Headphone amp with balanced I/O
  114. Bartolucci: beware of him !!!
  115. Finding plate resistance
  116. Pleides Tube only headphone amp
  117. I think I know what I want (seasoned advice)
  118. CCS filament supply vs inductors for DHT
  119. Cap outer foil low impedance help...
  120. Distorted low end SE micro amp
  121. LM3886 + ECC82/12AU7
  122. My LCR phono with HUM....
  123. Winter 2A3 SET project.
  124. 6BQ5 pp with LM317 ccs
  125. maratz 7 clone
  126. Music Angel pre-amplifier - few modifications
  127. Transformer Questions (1st Amp Project)
  128. Morgan Jones and PS Bypass Caps
  129. Ruby Tuby at 24V?
  130. Budget Iron for Low-Power SET
  131. Output transformer mounting questions
  132. 3c24 preamp?
  133. Newb Q - JE Simple 2A3 as Monoblocks
  134. Vacuum tube amp design
  135. Counterpoint SA7.1 circuit question
  136. Variable Gain Control Topology
  137. Unknown amplifier, anyone recognice it?
  138. Harman Kardon "The Lute" A-220 - Repair manual?
  139. G2 input grid 6DQ6 push pull
  140. Schade SE 6550
  141. Heathkit aa-23 fix up
  142. 6SN7 Line Stage w/ Tone Controls
  143. Octal Heaven??
  144. how do i reach Chris the georgetown technician?
  145. mu follower bootstrap cap value
  146. POLL: The Legendary Williamson Amp Modified By SY
  147. 5Y3 PSU Question
  148. jolida 302b sweet sounding amp vs Audio Innovations 500
  149. MFA M120 any personal experience values and reviews?
  150. Scott 233D one channel bad - Next Project?
  151. Quickie GLA Tube Amp - whats the 1 ohm setting for?
  152. This Look Right?
  153. SIMPLE KIT with step by step instruction
  154. Ultra Simple PP ECC99?
  155. Heathkit Audio Analyzer
  156. The Best Valve Amp Design In Modern Time: Poll Candidates
  157. Current Requirements for Power Tubes
  158. Thermionic generator (Triode) appears to be real this time...
  159. Choosing Tube + OPT for preamp
  160. My first preamp with tubes
  161. Another New Guy Starting With %@&?~ Chinese PCB
  162. Question about output transformers.
  163. NEETS & Kirchhoff , I'm stuck
  164. Reviving a late 50's el84-based hifi
  165. Need a 7K a-a
  166. Tube ID
  167. Anyone know what these are?
  168. Let's Talk About Grounding
  169. Tube Pre Amp DIY Schematic
  170. Rectifier choice
  171. power transformer fo single tube ecl82 amplifier
  172. Today's Version of The Williamson Amp
  173. what's wrong with my calculations?
  174. Phono stage design considerations part 1: choosing 1st stage tube
  175. Can anyone suggest a practical use for this gauge on a tube amp
  176. Completed my 829 PPP w/ pmillet's driver pcb's.
  177. adding input transformer to Sony sra-2 tube preamp
  178. 6P45S 50W mono block tube amplifier
  179. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  180. curious answer from CommonSense Audio
  181. Local Feedback for Push Pull Pentode
  182. Hickok Tv-7D/U A Setting not working
  183. Exotic interstage transformers
  184. DAC & Tube Preamp, Elevated Heater Question
  185. This Schematic Sounds Great
  186. Most Exotic MM phono preamplifier
  187. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  188. Strange noises on my Aikido power on
  189. lost capacitance
  190. Best SE KT66 schematic?
  191. Mixing old and new tubes
  192. Mullard 3 Tube 3 watt amplifier Question
  193. Darling Pre-amplifier using WCF for 1626's
  194. Is my tube broken? Which one should replace it?
  195. What Exactly Is Voltage Drop
  196. simplex (6c33c se amp) and stabilized current
  197. Transformers with dual primaries?
  198. Building the VTA, tubes4hifi PH16 Phono Stage
  199. K&E Preamplifier
  200. 12ax7:top psvane or top shuguang?
  201. Software To Help Design Tube Amplifier
  202. How can I drop B+ Voltage
  203. Eico HF-60's power supply.
  204. Need help with Output Transformer for EL84
  205. Where to reference filaments to ground?
  206. Maratnz 9 irons
  207. Noisy re-purposed MOT
  208. Mullard HQ Stereo Amp - Transformers Question
  209. C3g triode-strapped linearity question
  210. Making tube Rp disappear now
  211. 6E5P Connection Question
  212. Push Pull stereo amp bridged to monoblock operation
  213. Mr Blohbaum's Multiplied Transconductance Amp
  214. Vintage output transformer ID
  215. Getting Rid of Some Stickys
  216. Grid is Referenced To Ground through resistor? WHAT?
  217. Problem with CCSIC in Tubelab SE
  218. AP testing of the 6L6 SE
  219. output impedance
  220. 11BM8 heater wiring question
  221. Lower AC ripple on one side of coupling cap than the other side?
  222. HELP!! K12G Valve kit transformer
  223. 4 x EL34 or 2 x 6550 in a pp amp
  224. 5965 Telefunken tube U mh CO label ?
  225. 845 IT couple amp
  226. What makes an output tube "run away"
  227. P. Millett Engineers Amplifier
  228. Biasing problem
  229. Direct coupled driver stage - bias design
  230. Monoblock project
  231. Series DC Heater chain
  232. Tranformer advice for small powered amp.
  233. Circuit for testing tube/valve - Help!
  234. new Tubes for MHZS 33
  235. Teeny Tiny Spud
  236. Paging Andy Bartha
  237. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  238. aikido octal all-in-one manual
  239. Conrad Johnson MV75 help needed
  240. Leak tl12+ ECC81
  241. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  242. Amperex AX569
  243. Marconi tube ID help
  244. ST-70 Input Stage, Explained For Extreme Beginners
  245. heaters connected to cathode?!
  246. HK Citation I rebuild question.
  247. tube 4-125A design
  248. Mod FISHER 100AZ-balanced input!?
  249. Akidio PS-17 CLC Resistance Value Choices
  250. More questions on parallel push-pull

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