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  1. Found tons of Tubes,and many other parts
  2. Ampeg B15 Heritage Clone Help
  3. EZ80 Data Sheets, R-Lim and Max Cap
  4. Filament Voltages CT vs Non-CT
  5. Troubleshooting help needed
  6. What is it? Tube guessology
  7. Bass & Treble controls, or rather lack of.
  8. Quicksilver 8417 Power Supply Question
  9. Why a sudden distortion in treble of this SET amplifier?
  10. 5f1 Champ grounding
  11. Antitriode PP with EL34
  12. How to calculate Pout for Push Pull design
  13. Newbie Question - Power Transformer vs Isolation Transformer
  14. All tubes red plating
  15. Exceeding bias voltage?
  16. Vacuum State RTP Preamp Problem
  17. Alfred Morgan Tube Preamplifier
  18. 845 vs GM70
  19. Looking for project suggestions - 12au7 pre-amp?
  20. Contemporary tradition breaking amp schematics.
  21. ul - triode coupled screen grid resistor
  22. Optimum driver valve for an interstage-transformer-driven SE 300B
  23. 6C33C
  24. Soundcraftsmen 5050
  25. Tetra Phono Question
  26. WF tube
  27. Opt laminations isolation
  28. Heretical Source
  29. Broskie auto bias
  30. heater wiring - the Good the Bad and the Ugly
  31. AC Line Filter
  32. Counterpoint SA5000 Help
  33. Problem with ECC83 measurement values - please help
  34. Newbie Bias help ?
  35. AV305m AVVT
  36. Pot mechanical resistance and restoration..
  37. HMV Little Nipper mantle radio = 1 STEREO
  38. What's the simplest way to adjust filament voltage?
  39. GDAP-06
  40. Audio Note L6 - Schematic?
  41. Preventing HV flashover on socket pins
  42. Best "Vintage" Stereo Pres that SoftClip and lotsa Harmonics
  43. SE with PP OPT's?
  44. 12ax7/12AT7 Recommendations
  45. HELP: Eimac 75TL amp high frequency roll off
  46. unison reserch s8, let's build it!
  47. Where do super high end companies get their transformers?
  48. Tube Tester Panel Meter
  49. Attic find AMP
  50. Help getting Imax and Eb approximations for a push-pull amp
  51. Is this amp OK to buy, or is this a problem?
  52. Swirling Harmonics, can it be described
  53. Line stage with u-follower and nfb
  54. Newbie looking for help, pre-out to tube amp.
  55. Unison research integrated ampliphier schematics
  56. FET CCS anode load and RFI/oscillation.
  57. Old schematic
  58. Newbie Looking for Replacement OPTS Motorola Console Amp
  59. Merlyn- May AudioXpress
  60. How to clean tubes?
  61. does the 3A5 have the stones to drive a 2A3?
  62. New amp: 13DE7 SE hybrid
  63. My amp is motorboating, improve it with b+ regulator ?
  64. Can you identify these amps?
  65. Sowter SA01 - anyone used it ?
  66. Mikael‑Abdellah‑SE‑KT88 Bias & Voltage readings Help?
  67. Resistors and combinations
  68. thr light in pcl82
  69. Bogen L330 - Worth restoring?
  70. Supro model 24 amp transformers
  71. Those Magnificent Television Tubes
  72. Demagnetizing OPT?
  73. Real DIY fun hybrid testing.
  74. Extreme hum in EQ output
  75. 46 triode-strapped DHT spice model
  76. SET output impedance vs speaker impedance
  77. Help with layout of tube preamp
  78. eico HF-65
  79. Wirewound bias pot problem.
  80. Driver for Telefunken RS242 in class A2
  81. Help on my signal generator
  82. another tube fact or fallacy
  83. Gap in Transformer Lams - OCD Check
  84. how to test...
  85. chinese tube amp
  86. tube/valve pc-80
  87. GM-70 All done
  88. Peavey 60/60 classic series schematic
  89. preamp for reciever?
  90. Designing a Tube Rectifier Circuit
  91. Bogen RP40A transformers....what to build with them?
  92. Harmony guitar amp restoration questions
  93. Heads Up for "El Cheapo" Builders
  94. replacing kt66 valves
  95. Help with power transformer identification
  96. 6-8x el84 Per channel
  97. To vary a signal pentode to triode in stages
  98. I have 2 choices for resistive load, need opinions.
  99. Tesla PCC88 7DJ8 dual triode - Help Needed.
  100. PP6550
  101. LT1083 interesting startup problem
  102. ECC33 Driver Stage
  103. Hiraga's Improved Concertina Phase Splitter
  104. 274B a direct replacement for 5AR4/GZ34?
  105. Help power up akai M8 amps
  106. Sonic Frontiers Power 3 Help!
  107. ImPasse Preamp now online
  108. Power supply for tube preamplifier with PCC88
  109. Don't know where to start...
  110. DIY noob
  111. 300B amp cathode bypass
  112. Amp hum with Preamp off
  113. First Project with these tubes
  114. 7189a socket rewiring
  115. Hybrid rectifiers in PSUD2
  116. Feedback / experience wanted on building the Audio note L4 Integrated EL34 PP Amp Kit
  117. About 6AS7BTL Amp
  118. Output Stage Protection Circuit
  119. Silly basic layout question - AC heaters
  120. heater voltage variation for special tubes
  121. Want to build a 807 Vixen.. Looking for help.
  122. Connecting Speakers to Yaqin 10L
  123. Gyrator Filter
  124. 6ab4 tube socket mounting
  125. Any Moto heads? Need OT advice please
  126. Did I break my tube? (new blue glow)
  127. I need help with ccs based LTP
  128. 4033L- rare triode tube.
  129. Single tube linestage schematic wanted: 8CG7
  130. Tetra Sans PS
  131. Tone controls
  132. Vintage Heathkit Electronic Switch as soundcard interface
  133. K-12M extra caps??
  134. Looking for Tube Amp Kit Recommendations
  135. magnatone 280 schematic
  136. high voltage after cap. change
  137. My first tube amp
  138. Recommendations for 6888 triode operating point?
  139. Mullard 12AX7 part uniformity
  140. 6n15n-EB confusion
  141. Noob Question: Phono Preamp
  142. Transformer data required P782
  143. Snubbers on Power Transformer Secondaries
  144. CCS for 6V6 PP amp
  145. screen voltage for triode strapped pentode
  146. New Driver
  147. purpose and value importance of resistor
  148. Values for Vintage Amp's & Preamp's Paragon 12(70's) & More
  149. Help with amp please.
  150. Another Discrete Current Source
  151. 834 Triode amp
  152. Determing the reason for mystery? cap in schematic.
  153. Dyna ST70 to Dual-differential EL34 triode amp project
  154. Tube Signal to Noise Ratio / Dynamic Range
  155. fluctating bias
  156. Just tried a Wire Wound pot for volume.
  157. LED's in the cathode..
  158. Dr. Arthur Loesch
  159. Counterpoint SA-220 mods
  160. Broskie P-P Bridged Output Stage
  161. Would a member fluent in technical German please have a look at this link?
  162. Damaged tube? EL84
  163. Heathkit AA-161 EL84/6BQ5 PP mono integrated amp mod
  164. vk-2100 mod question please
  165. Heater supply
  166. 6111/6n16b - linestage noise problem
  167. OPT specs
  168. Re: Tube Line gain stage with pcc88 or ecc82
  169. Knight-kit KA-55
  170. Can I delay part of a B supply this way?
  171. Tube Preamp turn on circuit
  172. SE GM-70 for 700-800 euro?
  173. filter cap markings
  174. tube buffer noise cancellation
  175. PSUD 2
  176. Bypassing filter caps with Smaller caps
  177. balancing resister for series capacitor in a power supply
  178. Yaqin MC-100b- TJ Full Music 6sn7
  179. Forgive me for I have sinned. Help with Volume Pot!
  180. Help with diagnoses for leak 20 PLEASE
  181. Suggested Circuit Changes to use EM80 in place of 6E2 Eye
  182. Fred Nachbaur SET amp: input capacitor
  183. Heathkit scu 1 and knight kn924 needed schematics
  184. Journey to the centre of a tube..
  185. RIP Dr Jim Marshall
  186. some questions about an ECL82 SE amp
  187. Heathkit Sine/Square wave Generator Manual needed!
  188. SRPP Signal Output Capacitors
  189. simple se input impedance
  190. Kt120 screen current
  191. New or used output xformers to play around with?
  192. Magnavox amp
  193. Help hooking up panel ammeter for bias adjust
  194. opt A-440
  195. OTL Headphone amplifier with Tube ED8000
  196. NJ7P Gone?
  197. MYSTERY METAL TUBES B-1532
  198. noisy tubes
  199. Old amp hum repair
  200. Traveling with DIY Kit in USA-Airport Security Question
  201. Hammond 1650P vs 1650N For EL34 PP
  202. Calibrate a Hickok 6000?
  203. Blown Output Tubes
  204. Kriesler Radiogram refurbishment questions
  205. 6P15P socket connection
  206. Revision 2. Balanced
  207. 6V6 schematic
  208. 6h23N test setting?
  209. 12AH7GT
  210. TUBE Tape Head record / playback amp....
  211. Strange couple comportament 6L6GC RCA black plates.
  212. Reduce Output Volume
  213. Differential Amp CCS Tail SVCS Plate - Noise Issues
  214. Triode curves for EL/PL519
  215. Is that a SRPP circuit with 6SN7?
  216. KT33 Push Pull
  217. Rogers Cadet III Integrated Amp Capacitor Values help
  218. 2a3 alternative after NOS burning
  219. 6SN7 SRPP - oscillating dc offset
  220. Hickok TV-2 'percent quality'
  221. Another Tube I/V converter/preamp for balanced DACs with SE output:build thread
  222. Aikido LV 48V ECC99 or 6N6p
  223. Project: Ultra Small 6C33 / Hybrid Stereo Headphone Amplifier
  224. Back to the tubes
  225. Any use for these PAECO transformer?
  226. Video lectures on tube amplifier design
  227. Millett PP or Allen Wright's PP-2c or?
  228. Magnavox 8608-10
  229. Time relay
  230. Help with Music Angel XD800MKIII mods!?
  231. Little Dot MKIII ??????
  232. Cathode follower wideband amplifier
  233. Wrong base ???
  234. My first DIY schematic... need eagle eyes.!
  235. Stubborn Noise/Oscillation - Another Call for Help
  236. help with power tranny
  237. Tube Amp Repair - SE Michigan
  238. ST 70 Power on!
  239. given choice of low screen voltage or low bias which sounds better or is it equal
  240. How many various OEM brands come from Shuguang?
  241. Bye for now! :)
  242. general power tube output impedance chart?
  243. Should I ground my ST 70?
  244. What is the biggest 300B tube? (Dimension)
  245. 6N16 Valve break-in time
  246. Mystery Amp.
  247. valves tungsten filament
  248. Musical Machine (triode PP EL34) question(s)
  249. M100 Output Tube Problem!
  250. Need to replace the power switch on an EAR 859

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