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  1. Hovland HP-100 tube replacement
  2. Dynaco ST-120 Turn On Pop or Problem
  3. Grounding two channel preamp sharing a psu.
  4. Convert hybrid amp to pure tube output?
  5. Please Help me with this tubes
  6. 211- 6e5p full amp. The first setps
  7. E810F and general pentodes design question
  8. Pop goes the bias cap.
  9. High Power Single Ended Triode, Design
  10. Yaqin MS-6V6 vs. Markhill MS-6V6
  11. Schematic please: Luxman MQ-70?
  12. Aikido tube preamp with Tortuga LDR volume control
  13. Type 37 tube preamp
  14. Figuring out a KT88 datasheet?
  15. Power supply 260V for tube preamp
  16. Aikido Tube with Tortuga volume control project
  17. Adding a pre out to amp
  18. One or two ECC82 for two channels (crosstalk)!
  19. Red Pilot (240)
  20. 77:1 Output Transformer Question
  21. Power transformer recommendation Kt88 SE and JE labs Riaa
  22. Tube output power for OPT calculation
  23. 6sn7 tube anode folower question?????
  24. Goldox 9300
  25. good quality/sounding preamp advice
  26. PL84 schematic question.
  27. YouTube Video: 12AX7 comparisons.
  28. How many volts ???
  29. Greetings all/ (newbie) Need Advice!
  30. Psud and Single Ended Amplifier
  31. Socket Combiniations
  32. From Potentiometer to Stepped Attenuator
  33. No need for bleed resistors on Fisher 90-T
  34. Sophia 300B+ carbon
  35. PL519 amp SE
  36. C3g Headphone design - will this work?
  37. Luxman 2A3 amp SE
  38. Capacitor on Aikido Power Supply Sampling Circuit
  39. Well, what have I done now?
  40. Aikido CF cathode resistor?
  41. D3A - 6P45S/El519 SE "The staircase" my first h-end amplifier.
  42. SET Cathode Biased vs. Fixed Bias?
  43. JAN6418 pre-amp advise
  44. SOHA II amp tripping
  45. 6JN6 LTspice model?
  46. unusual output transformers, what are they for?
  47. Cheap power amp kit with 6N2 + 6P3
  48. KT88 AMP I'm not sure about power supply
  49. buzz from tubes
  50. Good Power Supply??
  51. Audio Research SP6C
  52. Junk Audio Project (pics)
  53. SE SV83 Paralled Tube Amplifer
  54. Hum in SVP preamp circuit
  55. Advice/tips on tube preamplifier wanted
  56. Transformer Windfall. Now what?
  57. I am being cautious - need to install a ground plug
  58. My first scratch build (6AQ5 SE)....
  59. Pop, Pop, Pop, Pop, Pop
  60. what is this valve? and what is it for??
  61. Lazarus cascade basic preamp
  62. Seperate Power Supply Chassis and Grounding
  63. How To Solder Tips and Tricks
  64. Another CD player tube mod, TDA1541 with transformers and triode cathode followers
  65. PCL86 - Worth a try?
  66. Audio use 3D6/1299 ?
  67. How HOT should a LM317 get?
  68. KT88 amp questions
  69. Restoring a Motorola HS-1048A amp
  70. Please look at this schematic and tells me what have went wrong
  71. Lacking bass response after re-cap
  72. Generate a negative bias voltage?
  73. hammond 369ex instead of 269ex
  74. Recapped a pair of monoblocks
  75. Top Secret!
  76. Toggle or Rotary Switch for Phono Inputs
  77. Flexible tube (or SS) electronic XO
  78. LAVATORY - Lamp Valve Transistor Hybrid (will this work?)
  79. Transformer revers use question
  80. Fixed bias, cathode feedback?
  81. spudnik, spudMiG ?
  82. I need the KT120 base dimensions
  83. Need help with chassis layout.
  84. tube amp ID ?
  85. GU50 filaments voltage!
  86. Does anybody have an RCA RS171 Schematic
  87. Opinions wanted: Low Z SE power supplies
  88. DC heaters, best way to bias ?
  89. Ignition coil as SE OPT
  90. Opt color code identification (Onetics)
  91. Drawback to Larger Capacity Output Transformer Than Required?
  92. Send me some pictures of your amps
  93. leak stereo 60
  94. B2 Spice V5.0
  95. Mains Fuse and Switch Best Practice
  96. Identify these vintage tube amp rivets
  97. RCA ORTHOPHONIC LMI-32216A manual copy needed
  98. Question on strange 6l6 schematic symbols
  99. Resistor value?
  100. ST70 chassis polishing
  101. Octal to RCA
  102. KT120 plate load for 150+watts
  103. Need a copy of Aikido 5687 manual pdf
  104. Nutshell Raven Headphone amp with balanced I/O
  105. Bartolucci: beware of him !!!
  106. Finding plate resistance
  107. Pleides Tube only headphone amp
  108. I think I know what I want (seasoned advice)
  109. CCS filament supply vs inductors for DHT
  110. Cap outer foil low impedance help...
  111. Distorted low end SE micro amp
  112. LM3886 + ECC82/12AU7
  113. My LCR phono with HUM....
  114. Winter 2A3 SET project.
  115. 6BQ5 pp with LM317 ccs
  116. Marantz 7 clone
  117. Music Angel pre-amplifier - few modifications
  118. Transformer Questions (1st Amp Project)
  119. Morgan Jones and PS Bypass Caps
  120. Ruby Tuby at 24V?
  121. Budget Iron for Low-Power SET
  122. Output transformer mounting questions
  123. 3c24 preamp?
  124. Newb Q - JE Simple 2A3 as Monoblocks
  125. Vacuum tube amp design
  126. Counterpoint SA7.1 circuit question
  127. Variable Gain Control Topology
  128. Unknown amplifier, anyone recognice it?
  129. Harman Kardon "The Lute" A-220 - Repair manual?
  130. G2 input grid 6DQ6 push pull
  131. Schade SE 6550
  132. Heathkit aa-23 fix up
  133. 6SN7 Line Stage w/ Tone Controls
  134. Octal Heaven??
  135. how do i reach Chris the georgetown technician?
  136. mu follower bootstrap cap value
  137. POLL: The Legendary Williamson Amp Modified By SY
  138. 5Y3 PSU Question
  139. jolida 302b sweet sounding amp vs Audio Innovations 500
  140. MFA M120 any personal experience values and reviews?
  141. Scott 233D one channel bad - Next Project?
  142. Quickie GLA Tube Amp - whats the 1 ohm setting for?
  143. This Look Right?
  144. SIMPLE KIT with step by step instruction
  145. Ultra Simple PP ECC99?
  146. Heathkit Audio Analyzer
  147. The Best Valve Amp Design In Modern Time: Poll Candidates
  148. Current Requirements for Power Tubes
  149. Thermionic generator (Triode) appears to be real this time...
  150. Choosing Tube + OPT for preamp
  151. My first preamp with tubes
  152. Another New Guy Starting With %@&?~ Chinese PCB
  153. Question about output transformers.
  154. NEETS & Kirchhoff , I'm stuck
  155. Reviving a late 50's el84-based hifi
  156. Need a 7K a-a
  157. Tube ID
  158. Anyone know what these are?
  159. Let's Talk About Grounding
  160. Tube Pre Amp DIY Schematic
  161. Rectifier choice
  162. power transformer fo single tube ecl82 amplifier
  163. Today's Version of The Williamson Amp
  164. what's wrong with my calculations?
  165. Phono stage design considerations part 1: choosing 1st stage tube
  166. Can anyone suggest a practical use for this gauge on a tube amp
  167. Completed my 829 PPP w/ pmillet's driver pcb's.
  168. adding input transformer to Sony sra-2 tube preamp
  169. 6P45S 50W mono block tube amplifier
  170. Is it possible to drive 4xKT88PP with an AC coupled LTP PI?
  171. curious answer from CommonSense Audio
  172. Local Feedback for Push Pull Pentode
  173. Hickok Tv-7D/U A Setting not working
  174. Exotic interstage transformers
  175. DAC & Tube Preamp, Elevated Heater Question
  176. This Schematic Sounds Great
  177. Most Exotic MM phono preamplifier
  178. Fast track or How to utilize two 3-hole chassis for 20W+ monoblocks
  179. Strange noises on my Aikido power on
  180. lost capacitance
  181. Best SE KT66 schematic?
  182. Mixing old and new tubes
  183. Mullard 3 Tube 3 watt amplifier Question
  184. Darling Pre-amplifier using WCF for 1626's
  185. Is my tube broken? Which one should replace it?
  186. simplex (6c33c se amp) and stabilized current
  187. Transformers with dual primaries?
  188. Building the VTA, tubes4hifi PH16 Phono Stage
  189. K&E Preamplifier
  190. 12ax7:top psvane or top shuguang?
  191. Software To Help Design Tube Amplifier
  192. How can I drop B+ Voltage
  193. Eico HF-60's power supply.
  194. Need help with Output Transformer for EL84
  195. Where to reference filaments to ground?
  196. Maratnz 9 irons
  197. Noisy re-purposed MOT
  198. Mullard HQ Stereo Amp - Transformers Question
  199. C3g triode-strapped linearity question
  200. Making tube Rp disappear now
  201. 6E5P Connection Question
  202. Push Pull stereo amp bridged to monoblock operation
  203. Mr Blohbaum's Multiplied Transconductance Amp
  204. Vintage output transformer ID
  205. Getting Rid of Some Stickys
  206. Grid is Referenced To Ground through resistor? WHAT?
  207. Problem with CCSIC in Tubelab SE
  208. AP testing of the 6L6 SE
  209. output impedance
  210. 11BM8 heater wiring question
  211. Lower AC ripple on one side of coupling cap than the other side?
  212. HELP!! K12G Valve kit transformer
  213. 4 x EL34 or 2 x 6550 in a pp amp
  214. 5965 Telefunken tube U mh CO label ?
  215. 845 IT couple amp
  216. What makes an output tube "run away"
  217. P. Millett Engineers Amplifier
  218. Biasing problem
  219. Direct coupled driver stage - bias design
  220. Monoblock project
  221. Series DC Heater chain
  222. Tranformer advice for small powered amp.
  223. Circuit for testing tube/valve - Help!
  224. new Tubes for MHZS 33
  225. Teeny Tiny Spud
  226. Paging Andy Bartha
  227. 6ak5 / 5654 tubes in Kuala Lumpur, Malaysia
  228. aikido octal all-in-one manual
  229. Conrad Johnson MV75 help needed
  230. Leak tl12+ ECC81
  231. Kuba Serenade Stereo Console - Part II - New development - amp debug question
  232. Amperex AX569
  233. Marconi tube ID help
  234. ST-70 Input Stage, Explained For Extreme Beginners
  235. heaters connected to cathode?!
  236. HK Citation I rebuild question.
  237. tube 4-125A design
  238. Mod FISHER 100AZ-balanced input!?
  239. Akidio PS-17 CLC Resistance Value Choices
  240. More questions on parallel push-pull
  241. Inputs needed for Power Transformer Design!
  242. seeking advice about Welborne Labs kit
  243. 2A3 Design: Real World Gain Question
  244. 6M11 push-pull spud amp
  245. My first Console mod - Class is in session
  246. Wright Sound WPA 3.5 Power Transformer Replacement Options
  247. DF 96 tube
  248. S.A.C.T valve transformers
  249. Very strange....
  250. Advice Needed on PSU Over voltage

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