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  1. Quad KT88 driver
  2. Single Ended Output Transformer
  3. SE P-P guitar amp.
  4. 300B with interstage
  5. Problem with Aria (Meng) Mini 6p1 (glowing plate)
  6. possible to filter dips in AC line?
  7. Weston Ammeter Headphone Amp Prototype
  8. What is the fault with this amp?
  9. k-12G turret board version
  10. low voltage "high gain" amp
  11. Wanted: ELNA Cerafine 10000uf 63v New or used
  12. Connect ipod/laptop to old 1950's radio
  13. Percieved Power outputs Tube vs Solid State
  14. (Weston Ammeter Headphone Amp Redux ?)
  15. Tube guitar amp for acoustic guitar?
  16. Would it be possible to drive a 300b with new power jfets?
  17. Would it be possible to drive a 300b with new power jfets?
  18. Will KT88 increase output power in Copland CTA-402
  19. Music Angel XD-SE EL34 intermittent thump
  20. OPT with cathode feedback
  21. Rebuilding fisher sa-1000
  22. Little Dot Mk IV SE
  23. EF86 on HICKOK 752a tester..??
  24. Choke power supplies and bypassing.
  25. Load resistor on OPT
  26. Ultimate Octal
  27. Help needed for 6H30 output schematic for DAC
  28. KT88 doubt
  29. Leave it on or turn it off?
  30. 6y6 output tube and Fender Champ(ion)
  31. Did I do this loadline correctly
  32. Masco MA-35 rebuild
  33. Motorola SE console amp blown fuse
  34. What to do with Telefunken parts?
  35. OT as buffer?
  36. Single ended EL84 Schematic
  37. Pattern for power xmfr magnetic leaking ?
  38. heater voltage
  39. Small Speakers for 5 channel single ended amp
  40. missing circuit components- why?
  41. valve rectifier series resistors
  42. What to do with a 6N14P/ECC84
  43. Info for very rare neon tubes?
  44. Fender 5F1 Champ clone with triode mode
  45. UL for EL84. 22-24% is better than the dogma....40% is lowest distortion....
  46. Jan Tube question
  47. 60 watt tubeamp with Low B+
  48. What types of SET rock the hardest?
  49. UTC A16 interstage 300B
  50. 6C33
  51. Need wiring schematic for Conn 6050 amp
  52. 6N6P at very low voltage
  53. Transformer Swap
  54. Need help building a tube linestage for my gainclone
  55. Ping SY: His Master's Noise
  56. Wollensak SE 7591 parts projects?
  57. 807 screen voltage help
  58. My little 801A power amplifier
  59. Help needed finding a small DPST switch - confused!
  60. Help with bias pot- wont adjust!
  61. 6N6P / ECC99 / E182CC
  62. bias question
  63. Really low parts could el84 pp design for a beginner?
  64. moviola tubes -- other names?
  65. DHT with TDA1541A in a NOS DAC?
  66. 6C33C-B Tube Tester
  67. VT100mk2 - Retubing
  68. Parallel 6L6 se iron suggestion.
  69. 6N2 Tube Srpp Drive Stage
  70. Unexpectedly good EL84 amp
  71. Kypo Electronic - Buffer, Preamp & Amp kits
  72. PSU bypass cap type
  73. Yaqin MC10-T
  74. Yaqin MC10-L Need help collating data
  75. Wanted: High Quality Complete tube NOS DAC with TDA1541A
  76. 6360 or 6939 as a phase inverter
  77. Peerless 16687 & 7142 Transformer Identification
  78. Wanted: High Quality DIY Tube NOS DAC with TDA1541A
  79. Restoration of leak stereo 20: advice pls
  80. DC Tube Heaters
  81. Musical Paradise MP-428 300B Amplifier
  82. Tube regulator
  83. Why overvoltage on HT?
  84. 50c5 schematic question
  85. Me again... matrix decoding w/ tubes?
  86. chapman 305 transformer wiring
  87. tube rolling el34 need advice
  88. Adding resistance to OT circuit.
  89. Tube pre-amp + Class-D amp. any experience?
  90. Bias using a ccs as an anode load
  91. Magnepan High Frequency Tube Amp
  92. Home-Made Plate Curves
  93. Vacuum Tube Audio PH-11
  94. Latest project SRPP valve front end with class D MOSFET output stage.
  95. Melos 400 restoration project - need help (unaltered reference needed)
  96. Comparison of Sovtek 5751 and RCA 5751
  97. Replacing electrolytic caps
  98. Heater supply for the 866a
  99. How good is good enough when designing a line stage?
  100. Cathode/plate resistors ??
  101. Tubes and LTspice?
  102. Is this an oscillation problem? -broskie CCA linestage
  103. Simple Octal SET help.
  104. Capacitor Sanity Check
  105. VTVM substitute?
  106. Caps - Mundorf Silver/oil vs silver/gold/oil
  107. What music/sound style for 845 tubes?
  108. Advice Needed
  109. Favorite ouput tube (SE only)
  110. Best make of audio valves/tubes
  111. How to calculate source impedance for audio transformer?
  112. Schematic for REDDi DI-Box?
  113. what the best kit for Dynaco
  114. That mystery trem cap
  115. A Hot Rodded Bottlehead S.E.X. Amplifier
  116. Cheap Chinese amps
  117. Wanted: Leak ST-50 Mains transformer 240V
  118. Eico HF-20 to bass guitar amp
  119. Ampeg B-18 issue/debug
  120. Who makes their own OPT around here?
  121. 71A
  122. Sound quality chinese tube amplifiers
  123. freeware circuit simulator for Osx (Mac)
  124. 12ax7LP substitute
  125. RH84 SE Build and custom Edcor power transformer
  126. 6l6 se primary impedance choice
  127. Luxman SQ38FD mkII, schematic
  128. 6c33 SET (my next project). Need some feedback
  129. Amorphous iron UMCCC-125: what would you do from it?
  130. Old Fisher SA-300 Amp help!
  131. What kind of sound does a noisy 12B4 make ??
  132. KT88 bias current keeps drifting
  133. Oddball Tube - Useful for Audio??
  134. 12AX7 dual triode "Signal Enhancer/Conditioner"
  135. 2nos of 6l6 in Parallel SE mode
  136. Output transformer selection
  137. 5C8S rectifier psud2 modle/rectifier information
  138. EF80 / KT77 SIngle Ended
  139. Longevity of output tubes in triode vs pentode
  140. Fender champ circuit low output.
  141. ekco ui59 receiver
  142. simple heater question .....
  143. Different Differential Pairs
  144. Decware Zen SET (first project/90% finished)
  145. YL-1200 for audioamp
  146. 7984's
  147. Building First Preamp HELP
  148. Aikido All-In-One Octal B+ measurement.
  149. OPT PP for GU50 Triode ?
  150. Requesting input on preamp schematic
  151. Longer life 6CA7's for class A
  152. Organ split
  153. Two amps done and done!
  154. Testing the 5842/417a on Sencore MU150?
  155. Why Class A Guitar Amplifiers Sound So Good ........
  156. Tube ID
  157. How to best drive an 845?
  158. K-16ls + ton pcb (just finished pics)
  159. Helios + Pultec tube EQ rack prototype.
  160. 12ax7 preamplifier with modified power supply!!! please help!
  161. tube amp prototype with pc
  162. Looking for a new diy project
  163. To James or to Baxandall?
  164. 45 triode : max 275 or 300 vdc ?
  165. Anyone with experience breaking in capacitors out of circuit?
  166. Vt-64/800 tube amp/preamp
  167. Hammond 1609 Output Transformer - EL84
  168. Chinese Capacitors
  169. 60 Watts A Channel 6528A Tube Amp
  170. AC or DC heathing?
  171. 1000W tube amplifier
  172. LEDs or RC?
  173. Is this amp worth bringing back to life?
  174. Melody PM845
  175. Need help troubleshooting this integrated.
  176. Wanted...design for D3a triode strapped driving 45
  177. Removing Tone Controls from VoM Preamp/Amp
  178. Philips 8580 useful anywhere?
  179. output transformer info
  180. 100Hz square preamp responce help
  181. 6P21s 6n21c tube, True Direct Heater?
  182. Convert Dogzilla for Hi-Fi output
  183. Bogen AP-35 Static and Pop from one channel
  184. EL34 PP triode mode hums
  185. Rectifiers
  186. Yaqin MC 10l problem
  187. Stripping Edcor's powder coating
  188. 5Y3 with slow warm up input and output tubes
  189. power transformer question
  190. DHT heaters . and their property"s
  191. Power Tube Cathode Resistor "distance"
  192. Does the same output power from tube amp and ss amp have difference?
  193. 32 Channel Microphone Preamp
  194. Field coil questions
  195. MC240 found in a shed.
  196. "Impossible" circuit which seems to amplify anyway.
  197. EL84 driving EL84 SEP
  198. Tube buffer for MosFet Citation 12
  199. Building a better power Triode
  200. Original KT88? or not
  201. Moscode 300 Upgrade
  202. Onwer's Manual for Realistic SAF-24D
  203. 2 stage Stereo/4 Stage Mono Triode Preamp with independent drive control & inverters
  204. 6J4 Experiment!
  205. Anyone build Broskie's T8 OTL?
  206. Just WHY are DHT tubes SO Expensive....?
  207. Two chassis grounding
  208. Tubes vs. Caps?
  209. Impedance and output transformer selection question
  210. Preamp tube SRPP 12AU7 VS preamp tube Aikido 12AU7 = all use rec 6X5GT
  211. peavey tube amplifiers
  212. Stark 9-66 tester repair
  213. 5e7 bandmaster build q's
  214. What kind of tube did I use back then?
  215. Wanted: Vacuum Tube Phono Preamp for PAS
  216. Lower gain in YS Audio linestage
  217. Converting 12FQ8 for 12AX7 , HELP !!!
  218. Transformer Inquiry
  219. Gibson BR-9 Tube Amp Issues
  220. Stromberg-Carlson AU-35 PA Amp for Guitar
  221. Pitfalls of paralleling different resistor brands?
  222. Question about rp and the AC load line
  223. KTA-HiFi ST-70 pcb or marantz 8b. HiFi build
  224. What is it about SET's?
  225. Help with Power cable on guitar amp
  226. The Russian Connection - (Maybe) A build thread. (KT88 SEP)
  227. A small help with russian low voltage tube
  228. EL34 vs 6L6 for HiFi
  229. Acoustic (not Audio) Alchemy Labs
  230. Mullard 404? ECL82 amp
  231. OP & tube power transormers
  232. EML 300B-XLS Schematic?
  233. Experiences with TAD EL34?
  234. C3g simulation model
  235. ok maybe im just a newb when it comes to amps but...
  236. Yet another compactron to play with...
  237. Weird heater arrangement 12ax7/6bm8
  238. I love SET can we fix what I hate?
  239. Tony's 6H32 pre-amp
  240. rebias guitar amp if using same tubes???
  241. To tone control or not to...
  242. EL84 plate voltage.
  243. 6bx7
  244. Anyone in the L.A. area with scope willing to troubleshoot?
  245. Transformers in series OK?
  246. Russian 6CA4/EZ81 Equivalent?
  247. Amp build recomendation.. for Frazier model sevens
  248. How can I make a DIY AC probe for my DMM
  249. PSUDII Question
  250. EH KT88 Glowing Welds?

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