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  1. limited soundstage with headphones
  2. headset to microphone
  3. Does anyone know how to use the digital potentiometer DS1882
  4. High Fidelity Ear Protection: "Protect your ears from bad sounding HiFi systems!"
  5. Need Help With DIY Switch Box
  6. Looking for a simple high quality amp to drive 600 ohm load
  7. Load output resistors in parallel opamps amplifier
  8. Bone conduction headphones
  9. headphone cable choice
  10. Headphones on TA2024 Single powered D Class amp
  11. Help with volume control on a headphone amplifier?
  12. SIT Headphone amplifier (VFET S.F. buffer)
  13. Headphone impedance matching with tube head amp
  14. My O2 & Subbu DAC build
  15. Monster headphone rebuild - need help please
  16. Amplifier for akg k340 (400ohms)
  17. Single NE5532 driving 38ohms?
  18. class A Buffer
  19. Headphones invention challenge with Harman Audio
  20. DIY 12AU7 Hybrid Amp voltage variances
  21. O2 amp only playing sound through one channel
  22. Tone control
  23. Another site noob needing help with his O2!!
  24. Portable LME49720 Headphone Amp
  25. schematic request for tpa6120/ne5534 ebay amp
  26. Cable Dongle ? What is it?
  27. Are these ICs legitimate?
  28. single NE5532P headphone amp ?!
  29. How does op amp introduce power supply noise to output?
  30. CFA Headphones amplifier
  31. Which resistor value for Gain
  32. lme49600 pcb for discrete jensen 918
  33. Headphone Buffer With Power Supply
  34. How to calculate Zobel/Boucherot Circuit
  35. MSA 30X Sound Amplifier
  36. 100Hz Hum in Lehmann Linear clone
  37. What you guys think of this Headphone amp?
  38. Personal Monitor System
  39. OBH-11 passive preamp mod
  40. "The Crocodile"
  41. PCM2407 DAC click & pop issue.
  42. Balanced Headphone amplifier for HiRes Bluray
  43. Shorted Channels w/o apparent effect on SQ
  44. ESL headphones and amp.
  45. Which Amp best suited for Earphone
  46. OUTONE Pseudobridge system
  47. Which amplifier for Sennheiser HD 598?
  48. Headphone Amp IC
  49. HIGH performance HeadPhone amplifier OUTONE
  50. Another take on the Diamond Buffer
  51. First Headphone Amp Build
  52. Another implementation of Class A buffer for headphone
  53. Schematic help for wierd problem.
  54. CMoy with other Chips
  55. HiFi Headphone Amp for Recording Studio
  56. special tool for 3.5mm strain relief?
  57. IEM Amp Design Help
  58. Converting the Bugle2 to a headphone amp?
  59. A High-Quality, High-Power Headphone Amplifier
  60. Stereo intercom for my experimental airplane
  61. [ask] Is there a way to mod a CMOY amp to have more power?
  62. Opa551 getting very hot in inverting configuration
  63. low impedence buffer
  64. A simple 2-Ch mixer, suggestions, ideas?
  65. O2 Amp Build - Resistor Question
  66. How to bypass volume potentiometer Sennheiser PC360
  67. DC protection for headphones
  68. Should replacement headphone cable telescope the shield?
  69. Headphone Attenuator, Or do I need an amp
  70. starting diy with a cmoy
  71. Neodymium Magnets - Strength/Weight
  72. Which Class-A Build?
  73. Headphone Mic Wiring
  74. Portabel Headphone Amplifier
  75. Precission EQ of Headphones
  76. Ribbon Microphones for Noise Canceling
  77. adding 18 watt valve amp on pc
  78. 5x5 Headphone amplifier/Preamplifer
  79. Headphone amp?
  80. Isodynamic Planar Magnetic Headphones
  81. ATH-DN1000USB Audio Technica DNote Digital USB Headphone
  82. Simple SE buffer, any better idea ?
  83. Ribbon Drivers in Headphones
  84. 600 Ohm headphones that are not Beyerdynamic
  85. First time building CMOY - Need some help
  86. specification of headphone
  87. Differences in headphones and speaker amps
  88. Head 'n' HiFi - Walter: O2 Headphone Amp Kit
  89. head amp for AKG K-2xx serie(600 Ohm)
  90. High Performance Class A Current Feeback Headphone Amplifier
  91. Inverting CMOY with inverting DC servo for 5V USB
  92. Output Resistor on Bravo V2
  93. First build, needing a little direction
  94. cmoy tube amp... mic amp?
  95. Headphone insert
  96. Two stage opamp amplifier PCB 5x5cm
  97. Classic-50mW
  98. OPA2134 headphone amplifier or recommend something better
  99. Replacing power MOSFETs in SDS Labs headphone amplifier
  100. Headphone amplifier (Lavardin Follower)
  101. One Ohm Resistor Separating Grounds?
  102. Power handling value of headphone drivers?
  103. Turning stereo signal to two mono signals
  104. Hybrid Headphone Amplifier
  105. problem with my first lme49723 amp
  106. Theoretical Full Range Ribbon Headphones
  107. TPA6120 Resistor Question
  108. Cmoy voltage fluctuation problem
  109. High-voltage hybrid headphone amp
  110. Why such a large input series resistor?
  111. inductor+resistor network for headphone amp output?
  112. My Own Headphone Amp
  113. Diy headphone options for AKG k701's
  114. OPA2134 Input Stage...
  115. OPA2134+LM6172 composite amp ?
  116. dual purpose amp question.
  117. importance of output impedance for headphones?
  118. AKG 601 cable really BI-WIRE?
  119. OP-amp getting hot
  120. Headphone Amplifier project
  121. Modifying the SMSL SAP VI for low impedance headphones
  122. artwork on cans?
  123. My first Desktop HPA
  124. Volume control
  125. Best way to implement a voltage gain stage with opamp?
  126. DIY HEADPHONES
  127. Audeze LCD poor comfort – any mods?
  128. Headphone capsules: OEM stuff
  129. OPA2134/IRF510 Schematic...
  130. Need Headphone Amp Schematic for NJM4556
  131. Headphones for me, speakers for wife
  132. Headphone amp level = line level? (Maybe obvious question)
  133. My first HPA design...comments please!
  134. Transparent & Objective: My Objective 2 build
  135. My O2 Portable Amp
  136. O2 Front Panel
  137. My LM5532 Headphone Amplifier project
  138. CMOY with Common Collector Buffer
  139. CMoy Desktop with Buffers
  140. Objective o2 diy no sound
  141. Cmoy help please!
  142. µCmoy - My take on the portable CMoy amp
  143. My Headphone amp. Very diy...
  144. Opa2134 Max. Power dissipation
  145. 49600 single ended amp; I blew up the output caps!
  146. MultiLoop Amp Output impedance
  147. Need a small amplifier
  148. OPA2134 in parallel
  149. Desktop Cmoy with NJM4556 Buffers
  150. Portable headphone amp
  151. NJM4556 Output Impedance
  152. TPA6120A2 Input Bias Voltage Protection
  153. geek Wave DAP
  154. HPA-1 Class A Headphone Amplifier
  155. Very good Headphone Amplifier
  156. CMOY problem - any ideas welcome
  157. CMOY problem - any ideas welcome
  158. CMOY issues - all ideas welcome
  159. HELP: tuning for AKG601 + MJ mini tube amp
  160. Crosstalk issue with homebrew headphone amps
  161. A composite with LT1210 - another way of doing it
  162. CMoy Opa2134 minimum Gain
  163. Cmoy vs Chipamps
  164. DIY portable USB headphone AMP/DAC- recommended ICs?
  165. My first amp!
  166. Pot before a high pass filter
  167. CMoy Mod for drive speakers
  168. Old School tda2003 Headphone amp
  169. Noobie looking for a cheap heaphones amp
  170. Headphone amp from AN-272 Op Amp Booster Designs
  171. Elektor improved headphone preamp. Is it good quality?
  172. Cmoy with RA input?
  173. GAMECOM Headphone Cable
  174. Stereo crosstalk gets worse with frequency?
  175. Decware ZKIT3 Clipping
  176. WARNING hillyhifi
  177. 49600 Electrostatic Discharge Concerns
  178. So, your Grados are too bright?
  179. o2 flush gain switch?
  180. clip on heat sinks for TO-263
  181. Looking for a closed HP driver
  182. Headphone amp with RCA bypass grounding
  183. About Crossfeed concept
  184. Optimizing a TPA6120a2 layout
  185. Quality 6.35mm Stereo Headphone Socket?
  186. cmoy amp suggestions
  187. simple, high performance amp using DRV134?
  188. General Headphone Amplifier Survey
  189. O2 headamp PM latch PC board to stop O2 low battery buzzing
  190. Headphone system - volume pot placement.
  191. 2 wires for Return Terminal and 1 wire for (+) Terminal in EXPENSIVE Headphone cable
  192. Too simple MOSFET ESL amplifier
  193. summing to mono
  194. Inexpensive O2 faceplates on Ebay
  195. Headphone amp on perfboard: layout critics welcome
  196. *For Sale* objective 2 Failed to launch *For Sale*
  197. Producing Headphones
  198. Need help building a headphone relay
  199. Low cost Stax headphone amplifier
  200. Douglas self_Ground cancelling & 0-impedance ??
  201. 3,5 to RCA cable
  202. RJM Sapphire build thread:
  203. Mistakenly ordered a 100k pot for O2 amp.
  204. Broskie Headphone Amp - frequency response
  205. Brig, any thoughts?
  206. Help with volume independent humming...
  207. Benchmark headphone amp-white paper by John S.
  208. Simplest headphone amp circuit (something like you'd get in a walkman or MP3 player)?
  209. ATTN: Beyerdynamic owners
  210. new opamps break in
  211. 32 Ohm- actual impedance at diff. frequencies?
  212. Gilberd headphone amplifier
  213. Acoustics in closed vs. open design confusing - help needed!
  214. O2 amp troubleshooting - help a newbie!
  215. Headphones for music production
  216. Headphone Data Sheet Table with power, voltage & current
  217. Headphone amp also used as preamp for long cable
  218. ground question
  219. Adventures in Headamp Country
  220. GIBRID TELEFONE AMP.
  221. Grado SR60 and a near field sub
  222. SCHURTER - 4802.2330 - SOCKET, 3.5MM JACK, PCB, 3POLE
  223. Receiver Headphone output - modifications?
  224. Headphone amplifier that runs on 5V?
  225. Headphones that pick up FM transmitted stations?
  226. Components for KA2209 headphone amplifier?
  227. stereo jacks look dangerous!
  228. Minimal headphone circuit.
  229. +/- 8/10V from 5V USB power converter
  230. Help choosing replacement headphones
  231. Bluetooth Headphones - Bluedio's "R+"
  232. Need help understanding current loops...
  233. Little-Bear B1 modding..
  234. Headphone amplifier using SJ2520
  235. Wich Over-Ear Headphones and a Soundcard or DAC/AMP Combo?
  236. How to DIY headphones?
  237. 19J6 Millett amp
  238. Valuable dual opa for headphones amp
  239. Need travel headphones < 300 dollars
  240. Objective + ODAC modifications
  241. Help my cmoy is popping caps
  242. SOHA II amp tripping
  243. cisco power supply, grounding and the Millett starving student
  244. cisco power supply, grounding and the Millett starving student
  245. Help Summing Two Headphone Outputs
  246. question re crossfeed for low imped phones
  247. 6DJ8 headphone amp
  248. THD vs bias voltage for ESL headphones
  249. Just for fun
  250. Creek OBH-21 SE problem

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