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  1. Amp matching to headphones
  2. I need new headphones
  3. my great sounding tube hpa
  4. Sennheiser headband repair
  5. Help with bass amp for headphones for study purposes
  6. cmoy op amp virtual ground question
  7. parallel opamp amplifier
  8. Isolate 2 headphone amps with one source - HELP!
  9. TPA6120 Breakout - Free Design Files
  10. PCM2707 and TPA6120 Amp - Boards and Design Files
  11. Recommendations for Closed-Back Headphones
  12. Headphones with dual jack, reduced volume
  13. Fault finding, BCL Clone, help needed.
  14. Low Impedance Headphone/Earphone Amp
  15. Do you use your O2 as desktop, portable, or both?
  16. Passive Bass Boost circuit?
  17. Looking for a schematic..
  18. Noise, too much noise.
  19. Pono in Balanced Mode
  20. Gaming Headphones mod ideas
  21. Material for Headphone cushion and fabric?
  22. Good low impedance headphone amp project
  23. Suggestion for headphone
  24. Anyone ID these headphones?
  25. My first headamp project
  26. Xfeed network
  27. Amp suggestion
  28. single-ended (hope:) ) headphone amplifier with minimal NFB and low THD
  29. Cavalli's EHHA r1 kit question
  30. Headphone amp series current limiter resistor
  31. HD600 recabling
  32. Tube amp with usb
  33. A little compilation Erwin's Amp
  34. Help with faulty Pioneer Headphones please?
  35. Sound Magic Hp200 Premium Audiophile headphones!
  36. Using sApii Pro TPA6120a2 at lower voltage?
  37. Grasshopper
  38. My mobile Headphone AMP w. OPA134 & BUF634
  39. Trying to convert a pre amp to an headphone amp I could use some help..
  40. what's up with Headwize website ?
  41. Digital potentiometer. Distortion and line level
  42. MOSFET amp instability
  43. Is the O2/ODAC combo right for me? Are there better alternatives for me?
  44. limited soundstage with headphones
  45. headset to microphone
  46. Does anyone know how to use the digital potentiometer DS1882
  47. High Fidelity Ear Protection: "Protect your ears from bad sounding HiFi systems!"
  48. Need Help With DIY Switch Box
  49. Looking for a simple high quality amp to drive 600 ohm load
  50. Load output resistors in parallel opamps amplifier
  51. Bone conduction headphones
  52. headphone cable choice
  53. Headphones on TA2024 Single powered D Class amp
  54. Help with volume control on a headphone amplifier?
  55. SIT Headphone amplifier (VFET S.F. buffer)
  56. Headphone impedance matching with tube head amp
  57. My O2 & Subbu DAC build
  58. Monster headphone rebuild - need help please
  59. Amplifier for akg k340 (400ohms)
  60. Single NE5532 driving 38ohms?
  61. class A Buffer
  62. Headphones invention challenge with Harman Audio
  63. DIY 12AU7 Hybrid Amp voltage variances
  64. O2 amp only playing sound through one channel
  65. Tone control
  66. Another site noob needing help with his O2!!
  67. Portable LME49720 Headphone Amp
  68. schematic request for tpa6120/ne5534 ebay amp
  69. Cable Dongle ? What is it?
  70. Are these ICs legitimate?
  71. single NE5532P headphone amp ?!
  72. How does op amp introduce power supply noise to output?
  73. CFA Headphones amplifier
  74. Which resistor value for Gain
  75. lme49600 pcb for discrete jensen 918
  76. Headphone Buffer With Power Supply
  77. How to calculate Zobel/Boucherot Circuit
  78. MSA 30X Sound Amplifier
  79. Headphone Power Buffer
  80. 100Hz Hum in Lehmann Linear clone
  81. What you guys think of this Headphone amp?
  82. Personal Monitor System
  83. OBH-11 passive preamp mod
  84. "The Crocodile"
  85. PCM2407 DAC click & pop issue.
  86. Balanced Headphone amplifier for HiRes Bluray
  87. Shorted Channels w/o apparent effect on SQ
  88. ESL headphones and amp.
  89. Which Amp best suited for Earphone
  90. OUTONE Pseudobridge system
  91. Which amplifier for Sennheiser HD 598?
  92. Headphone Amp IC
  93. HIGH performance HeadPhone amplifier OUTONE
  94. Another take on the Diamond Buffer
  95. First Headphone Amp Build
  96. Another implementation of Class A buffer for headphone
  97. Schematic help for wierd problem.
  98. CMoy with other Chips
  99. HiFi Headphone Amp for Recording Studio
  100. special tool for 3.5mm strain relief?
  101. IEM Amp Design Help
  102. Converting the Bugle2 to a headphone amp?
  103. A High-Quality, High-Power Headphone Amplifier
  104. Stereo intercom for my experimental airplane
  105. [ask] Is there a way to mod a CMOY amp to have more power?
  106. Opa551 getting very hot in inverting configuration
  107. low impedence buffer
  108. A simple 2-Ch mixer, suggestions, ideas?
  109. O2 Amp Build - Resistor Question
  110. How to bypass volume potentiometer Sennheiser PC360
  111. DC protection for headphones
  112. Should replacement headphone cable telescope the shield?
  113. Headphone Attenuator, Or do I need an amp
  114. starting diy with a cmoy
  115. Neodymium Magnets - Strength/Weight
  116. Which Class-A Build?
  117. Headphone Mic Wiring
  118. Portabel Headphone Amplifier
  119. Precission EQ of Headphones
  120. Ribbon Microphones for Noise Canceling
  121. adding 18 watt valve amp on pc
  122. 5x5 Headphone amplifier/Preamplifer
  123. Headphone amp?
  124. Isodynamic Planar Magnetic Headphones
  125. ATH-DN1000USB Audio Technica DNote Digital USB Headphone
  126. Simple SE buffer, any better idea ?
  127. Ribbon Drivers in Headphones
  128. 600 Ohm headphones that are not Beyerdynamic
  129. First time building CMOY - Need some help
  130. specification of headphone
  131. Differences in headphones and speaker amps
  132. Head 'n' HiFi - Walter: O2 Headphone Amp Kit
  133. head amp for AKG K-2xx serie(600 Ohm)
  134. High Performance Class A Current Feeback Headphone Amplifier
  135. Inverting CMOY with inverting DC servo for 5V USB
  136. Output Resistor on Bravo V2
  137. First build, needing a little direction
  138. cmoy tube amp... mic amp?
  139. Headphone insert
  140. Two stage opamp amplifier PCB 5x5cm
  141. Classic-50mW
  142. OPA2134 headphone amplifier or recommend something better
  143. Replacing power MOSFETs in SDS Labs headphone amplifier
  144. Headphone amplifier (Lavardin Follower)
  145. One Ohm Resistor Separating Grounds?
  146. Power handling value of headphone drivers?
  147. Turning stereo signal to two mono signals
  148. Hybrid Headphone Amplifier
  149. problem with my first lme49723 amp
  150. Theoretical Full Range Ribbon Headphones
  151. TPA6120 Resistor Question
  152. Cmoy voltage fluctuation problem
  153. High-voltage hybrid headphone amp
  154. Why such a large input series resistor?
  155. inductor+resistor network for headphone amp output?
  156. My Own Headphone Amp
  157. Diy headphone options for AKG k701's
  158. OPA2134 Input Stage...
  159. OPA2134+LM6172 composite amp ?
  160. dual purpose amp question.
  161. importance of output impedance for headphones?
  162. AKG 601 cable really BI-WIRE?
  163. OP-amp getting hot
  164. Headphone Amplifier project
  165. Modifying the SMSL SAP VI for low impedance headphones
  166. artwork on cans?
  167. My first Desktop HPA
  168. Volume control
  169. Best way to implement a voltage gain stage with opamp?
  170. DIY HEADPHONES
  171. Audeze LCD poor comfort – any mods?
  172. Headphone capsules: OEM stuff
  173. OPA2134/IRF510 Schematic...
  174. Need Headphone Amp Schematic for NJM4556
  175. Headphones for me, speakers for wife
  176. Headphone amp level = line level? (Maybe obvious question)
  177. My first HPA design...comments please!
  178. Transparent & Objective: My Objective 2 build
  179. My O2 Portable Amp
  180. O2 Front Panel
  181. My LM5532 Headphone Amplifier project
  182. CMOY with Common Collector Buffer
  183. CMoy Desktop with Buffers
  184. Objective o2 diy no sound
  185. Cmoy help please!
  186. µCmoy - My take on the portable CMoy amp
  187. My Headphone amp. Very diy...
  188. Opa2134 Max. Power dissipation
  189. 49600 single ended amp; I blew up the output caps!
  190. MultiLoop Amp Output impedance
  191. Need a small amplifier
  192. OPA2134 in parallel
  193. Desktop Cmoy with NJM4556 Buffers
  194. Portable headphone amp
  195. NJM4556 Output Impedance
  196. TPA6120A2 Input Bias Voltage Protection
  197. geek Wave DAP
  198. HPA-1 Class A Headphone Amplifier
  199. Very good Headphone Amplifier
  200. CMOY problem - any ideas welcome
  201. CMOY problem - any ideas welcome
  202. CMOY issues - all ideas welcome
  203. HELP: tuning for AKG601 + MJ mini tube amp
  204. Crosstalk issue with homebrew headphone amps
  205. A composite with LT1210 - another way of doing it
  206. CMoy Opa2134 minimum Gain
  207. Cmoy vs Chipamps
  208. DIY portable USB headphone AMP/DAC- recommended ICs?
  209. My first amp!
  210. Pot before a high pass filter
  211. CMoy Mod for drive speakers
  212. Old School tda2003 Headphone amp
  213. Noobie looking for a cheap heaphones amp
  214. Headphone amp from AN-272 Op Amp Booster Designs
  215. Elektor improved headphone preamp. Is it good quality?
  216. Cmoy with RA input?
  217. GAMECOM Headphone Cable
  218. Stereo crosstalk gets worse with frequency?
  219. Decware ZKIT3 Clipping
  220. WARNING hillyhifi
  221. 49600 Electrostatic Discharge Concerns
  222. So, your Grados are too bright?
  223. o2 flush gain switch?
  224. clip on heat sinks for TO-263
  225. Looking for a closed HP driver
  226. Headphone amp with RCA bypass grounding
  227. About Crossfeed concept
  228. Optimizing a TPA6120a2 layout
  229. Quality 6.35mm Stereo Headphone Socket?
  230. cmoy amp suggestions
  231. simple, high performance amp using DRV134?
  232. General Headphone Amplifier Survey
  233. O2 headamp PM latch PC board to stop O2 low battery buzzing
  234. Headphone system - volume pot placement.
  235. 2 wires for Return Terminal and 1 wire for (+) Terminal in EXPENSIVE Headphone cable
  236. Too simple MOSFET ESL amplifier
  237. summing to mono
  238. Inexpensive O2 faceplates on Ebay
  239. Headphone amp on perfboard: layout critics welcome
  240. *For Sale* objective 2 Failed to launch *For Sale*
  241. Producing Headphones
  242. Need help building a headphone relay
  243. Low cost Stax headphone amplifier
  244. Douglas self_Ground cancelling & 0-impedance ??
  245. 3,5 to RCA cable
  246. RJM Sapphire build thread:
  247. Mistakenly ordered a 100k pot for O2 amp.
  248. Broskie Headphone Amp - frequency response
  249. Brig, any thoughts?
  250. Help with volume independent humming...

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