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  1. My O2 & Subbu DAC build
  2. Monster headphone rebuild - need help please
  3. Amplifier for akg k340 (400ohms)
  4. Single NE5532 driving 38ohms?
  5. class A Buffer
  6. Headphones invention challenge with Harman Audio
  7. DIY 12AU7 Hybrid Amp voltage variances
  8. O2 amp only playing sound through one channel
  9. Tone control
  10. Another site noob needing help with his O2!!
  11. Portable LME49720 Headphone Amp
  12. schematic request for tpa6120/ne5534 ebay amp
  13. Cable Dongle ? What is it?
  14. Are these ICs legitimate?
  15. single NE5532P headphone amp ?!
  16. How does op amp introduce power supply noise to output?
  17. CFA Headphones amplifier
  18. Which resistor value for Gain
  19. lme49600 pcb for discrete jensen 918
  20. Headphone Buffer With Power Supply
  21. How to calculate Zobel/Boucherot Circuit
  22. MSA 30X Sound Amplifier
  23. 100Hz Hum in Lehmann Linear clone
  24. What you guys think of this Headphone amp?
  25. Personal Monitor System
  26. OBH-11 passive preamp mod
  27. "The Crocodile"
  28. PCM2407 DAC click & pop issue.
  29. Balanced Headphone amplifier for HiRes Bluray
  30. Shorted Channels w/o apparent effect on SQ
  31. ESL headphones and amp.
  32. Which Amp best suited for Earphone
  33. OUTONE Pseudobridge system
  34. Which amplifier for Sennheiser HD 598?
  35. Headphone Amp IC
  36. HIGH performance HeadPhone amplifier OUTONE
  37. Another take on the Diamond Buffer
  38. First Headphone Amp Build
  39. Another implementation of Class A buffer for headphone
  40. Schematic help for wierd problem.
  41. CMoy with other Chips
  42. HiFi Headphone Amp for Recording Studio
  43. special tool for 3.5mm strain relief?
  44. IEM Amp Design Help
  45. Converting the Bugle2 to a headphone amp?
  46. A High-Quality, High-Power Headphone Amplifier
  47. Stereo intercom for my experimental airplane
  48. [ask] Is there a way to mod a CMOY amp to have more power?
  49. Opa551 getting very hot in inverting configuration
  50. low impedence buffer
  51. A simple 2-Ch mixer, suggestions, ideas?
  52. O2 Amp Build - Resistor Question
  53. How to bypass volume potentiometer Sennheiser PC360
  54. DC protection for headphones
  55. Should replacement headphone cable telescope the shield?
  56. Headphone Attenuator, Or do I need an amp
  57. starting diy with a cmoy
  58. Neodymium Magnets - Strength/Weight
  59. Which Class-A Build?
  60. Headphone Mic Wiring
  61. Portabel Headphone Amplifier
  62. Precission EQ of Headphones
  63. Ribbon Microphones for Noise Canceling
  64. adding 18 watt valve amp on pc
  65. 5x5 Headphone amplifier/Preamplifer
  66. Headphone amp?
  67. Isodynamic Planar Magnetic Headphones
  68. ATH-DN1000USB Audio Technica DNote Digital USB Headphone
  69. Simple SE buffer, any better idea ?
  70. Ribbon Drivers in Headphones
  71. 600 Ohm headphones that are not Beyerdynamic
  72. First time building CMOY - Need some help
  73. specification of headphone
  74. Differences in headphones and speaker amps
  75. Head 'n' HiFi - Walter: O2 Headphone Amp Kit
  76. head amp for AKG K-2xx serie(600 Ohm)
  77. High Performance Class A Current Feeback Headphone Amplifier
  78. Inverting CMOY with inverting DC servo for 5V USB
  79. Output Resistor on Bravo V2
  80. First build, needing a little direction
  81. cmoy tube amp... mic amp?
  82. Headphone insert
  83. Two stage opamp amplifier PCB 5x5cm
  84. Classic-50mW
  85. OPA2134 headphone amplifier or recommend something better
  86. Replacing power MOSFETs in SDS Labs headphone amplifier
  87. Headphone amplifier (Lavardin Follower)
  88. One Ohm Resistor Separating Grounds?
  89. Power handling value of headphone drivers?
  90. Turning stereo signal to two mono signals
  91. Hybrid Headphone Amplifier
  92. problem with my first lme49723 amp
  93. Theoretical Full Range Ribbon Headphones
  94. TPA6120 Resistor Question
  95. Cmoy voltage fluctuation problem
  96. High-voltage hybrid headphone amp
  97. Why such a large input series resistor?
  98. inductor+resistor network for headphone amp output?
  99. My Own Headphone Amp
  100. Diy headphone options for AKG k701's
  101. OPA2134 Input Stage...
  102. OPA2134+LM6172 composite amp ?
  103. dual purpose amp question.
  104. importance of output impedance for headphones?
  105. AKG 601 cable really BI-WIRE?
  106. OP-amp getting hot
  107. Headphone Amplifier project
  108. Modifying the SMSL SAP VI for low impedance headphones
  109. artwork on cans?
  110. My first Desktop HPA
  111. Volume control
  112. Best way to implement a voltage gain stage with opamp?
  113. DIY HEADPHONES
  114. Audeze LCD poor comfort – any mods?
  115. Headphone capsules: OEM stuff
  116. OPA2134/IRF510 Schematic...
  117. Need Headphone Amp Schematic for NJM4556
  118. Headphones for me, speakers for wife
  119. Headphone amp level = line level? (Maybe obvious question)
  120. My first HPA design...comments please!
  121. Transparent & Objective: My Objective 2 build
  122. My O2 Portable Amp
  123. O2 Front Panel
  124. My LM5532 Headphone Amplifier project
  125. CMOY with Common Collector Buffer
  126. CMoy Desktop with Buffers
  127. Objective o2 diy no sound
  128. Cmoy help please!
  129. µCmoy - My take on the portable CMoy amp
  130. My Headphone amp. Very diy...
  131. Opa2134 Max. Power dissipation
  132. 49600 single ended amp; I blew up the output caps!
  133. MultiLoop Amp Output impedance
  134. Need a small amplifier
  135. OPA2134 in parallel
  136. Desktop Cmoy with NJM4556 Buffers
  137. Portable headphone amp
  138. NJM4556 Output Impedance
  139. TPA6120A2 Input Bias Voltage Protection
  140. geek Wave DAP
  141. HPA-1 Class A Headphone Amplifier
  142. Very good Headphone Amplifier
  143. CMOY problem - any ideas welcome
  144. CMOY problem - any ideas welcome
  145. CMOY issues - all ideas welcome
  146. HELP: tuning for AKG601 + MJ mini tube amp
  147. Crosstalk issue with homebrew headphone amps
  148. A composite with LT1210 - another way of doing it
  149. CMoy Opa2134 minimum Gain
  150. Cmoy vs Chipamps
  151. DIY portable USB headphone AMP/DAC- recommended ICs?
  152. My first amp!
  153. Pot before a high pass filter
  154. CMoy Mod for drive speakers
  155. Old School tda2003 Headphone amp
  156. Noobie looking for a cheap heaphones amp
  157. Headphone amp from AN-272 Op Amp Booster Designs
  158. Elektor improved headphone preamp. Is it good quality?
  159. Cmoy with RA input?
  160. GAMECOM Headphone Cable
  161. Stereo crosstalk gets worse with frequency?
  162. Decware ZKIT3 Clipping
  163. WARNING hillyhifi
  164. 49600 Electrostatic Discharge Concerns
  165. So, your Grados are too bright?
  166. o2 flush gain switch?
  167. clip on heat sinks for TO-263
  168. Looking for a closed HP driver
  169. Headphone amp with RCA bypass grounding
  170. About Crossfeed concept
  171. Optimizing a TPA6120a2 layout
  172. Quality 6.35mm Stereo Headphone Socket?
  173. cmoy amp suggestions
  174. simple, high performance amp using DRV134?
  175. General Headphone Amplifier Survey
  176. O2 headamp PM latch PC board to stop O2 low battery buzzing
  177. Headphone system - volume pot placement.
  178. 2 wires for Return Terminal and 1 wire for (+) Terminal in EXPENSIVE Headphone cable
  179. Too simple MOSFET ESL amplifier
  180. summing to mono
  181. Inexpensive O2 faceplates on Ebay
  182. Headphone amp on perfboard: layout critics welcome
  183. *For Sale* objective 2 Failed to launch *For Sale*
  184. Producing Headphones
  185. Need help building a headphone relay
  186. Low cost Stax headphone amplifier
  187. Douglas self_Ground cancelling & 0-impedance ??
  188. 3,5 to RCA cable
  189. RJM Sapphire build thread:
  190. Mistakenly ordered a 100k pot for O2 amp.
  191. Broskie Headphone Amp - frequency response
  192. Brig, any thoughts?
  193. Help with volume independent humming...
  194. Benchmark headphone amp-white paper by John S.
  195. Simplest headphone amp circuit (something like you'd get in a walkman or MP3 player)?
  196. ATTN: Beyerdynamic owners
  197. new opamps break in
  198. 32 Ohm- actual impedance at diff. frequencies?
  199. Gilberd headphone amplifier
  200. Acoustics in closed vs. open design confusing - help needed!
  201. O2 amp troubleshooting - help a newbie!
  202. Headphones for music production
  203. Headphone Data Sheet Table with power, voltage & current
  204. Headphone amp also used as preamp for long cable
  205. ground question
  206. Adventures in Headamp Country
  207. GIBRID TELEFONE AMP.
  208. Grado SR60 and a near field sub
  209. SCHURTER - 4802.2330 - SOCKET, 3.5MM JACK, PCB, 3POLE
  210. Receiver Headphone output - modifications?
  211. Headphone amplifier that runs on 5V?
  212. Headphones that pick up FM transmitted stations?
  213. Components for KA2209 headphone amplifier?
  214. stereo jacks look dangerous!
  215. Minimal headphone circuit.
  216. +/- 8/10V from 5V USB power converter
  217. Help choosing replacement headphones
  218. Bluetooth Headphones - Bluedio's "R+"
  219. Need help understanding current loops...
  220. Little-Bear B1 modding..
  221. Headphone amplifier using SJ2520
  222. Wich Over-Ear Headphones and a Soundcard or DAC/AMP Combo?
  223. How to DIY headphones?
  224. 19J6 Millett amp
  225. Valuable dual opa for headphones amp
  226. Need travel headphones < 300 dollars
  227. Objective + ODAC modifications
  228. Help my cmoy is popping caps
  229. SOHA II amp tripping
  230. cisco power supply, grounding and the Millett starving student
  231. cisco power supply, grounding and the Millett starving student
  232. Help Summing Two Headphone Outputs
  233. question re crossfeed for low imped phones
  234. 6DJ8 headphone amp
  235. THD vs bias voltage for ESL headphones
  236. Just for fun
  237. Creek OBH-21 SE problem
  238. Current source in diamond buffer
  239. Where do I start? (re: need a DIY amp project)
  240. 6N OCC 24awg single strand for headphones ?
  241. From amp w/ "bare wire" output to headphones...
  242. My new headphone amp
  243. Why are external amplifiers superior?
  244. Headphones and Hearing aids
  245. Reacheargeable CMoy Amp??
  246. Testing headphones
  247. Discrete op amp headphone amplifier module, based on Marantz
  248. Koss ESP9 Headphones Low Volume Fixed!
  249. Please help with DIY headphone amp.
  250. Huginn, High performance, Class A, Lateral FET headphone amplifier

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