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  1. Portable LME49720 Headphone Amp
  2. schematic request for tpa6120/ne5534 ebay amp
  3. Cable Dongle ? What is it?
  4. Are these ICs legitimate?
  5. single NE5532P headphone amp ?!
  6. How does op amp introduce power supply noise to output?
  7. CFA Headphones amplifier
  8. Which resistor value for Gain
  9. lme49600 pcb for discrete jensen 918
  10. Headphone Buffer With Power Supply
  11. How to calculate Zobel/Boucherot Circuit
  12. MSA 30X Sound Amplifier
  13. 100Hz Hum in Lehmann Linear clone
  14. What you guys think of this Headphone amp?
  15. Personal Monitor System
  16. OBH-11 passive preamp mod
  17. "The Crocodile"
  18. PCM2407 DAC click & pop issue.
  19. Balanced Headphone amplifier for HiRes Bluray
  20. Shorted Channels w/o apparent effect on SQ
  21. ESL headphones and amp.
  22. Which Amp best suited for Earphone
  23. OUTONE Pseudobridge system
  24. Which amplifier for Sennheiser HD 598?
  25. Headphone Amp IC
  26. HIGH performance HeadPhone amplifier OUTONE
  27. Another take on the Diamond Buffer
  28. First Headphone Amp Build
  29. Another implementation of Class A buffer for headphone
  30. Schematic help for wierd problem.
  31. CMoy with other Chips
  32. HiFi Headphone Amp for Recording Studio
  33. special tool for 3.5mm strain relief?
  34. IEM Amp Design Help
  35. Converting the Bugle2 to a headphone amp?
  36. A High-Quality, High-Power Headphone Amplifier
  37. Stereo intercom for my experimental airplane
  38. [ask] Is there a way to mod a CMOY amp to have more power?
  39. Opa551 getting very hot in inverting configuration
  40. low impedence buffer
  41. A simple 2-Ch mixer, suggestions, ideas?
  42. O2 Amp Build - Resistor Question
  43. How to bypass volume potentiometer Sennheiser PC360
  44. DC protection for headphones
  45. Should replacement headphone cable telescope the shield?
  46. Headphone Attenuator, Or do I need an amp
  47. starting diy with a cmoy
  48. Neodymium Magnets - Strength/Weight
  49. Which Class-A Build?
  50. Headphone Mic Wiring
  51. Portabel Headphone Amplifier
  52. Precission EQ of Headphones
  53. Ribbon Microphones for Noise Canceling
  54. adding 18 watt valve amp on pc
  55. 5x5 Headphone amplifier/Preamplifer
  56. Headphone amp?
  57. Isodynamic Planar Magnetic Headphones
  58. ATH-DN1000USB Audio Technica DNote Digital USB Headphone
  59. Simple SE buffer, any better idea ?
  60. Ribbon Drivers in Headphones
  61. 600 Ohm headphones that are not Beyerdynamic
  62. First time building CMOY - Need some help
  63. specification of headphone
  64. Differences in headphones and speaker amps
  65. Head 'n' HiFi - Walter: O2 Headphone Amp Kit
  66. head amp for AKG K-2xx serie(600 Ohm)
  67. High Performance Class A Current Feeback Headphone Amplifier
  68. Inverting CMOY with inverting DC servo for 5V USB
  69. Output Resistor on Bravo V2
  70. First build, needing a little direction
  71. cmoy tube amp... mic amp?
  72. Headphone insert
  73. Two stage opamp amplifier PCB 5x5cm
  74. Classic-50mW
  75. OPA2134 headphone amplifier or recommend something better
  76. Replacing power MOSFETs in SDS Labs headphone amplifier
  77. Headphone amplifier (Lavardin Follower)
  78. One Ohm Resistor Separating Grounds?
  79. Power handling value of headphone drivers?
  80. Turning stereo signal to two mono signals
  81. Hybrid Headphone Amplifier
  82. problem with my first lme49723 amp
  83. Theoretical Full Range Ribbon Headphones
  84. TPA6120 Resistor Question
  85. Cmoy voltage fluctuation problem
  86. High-voltage hybrid headphone amp
  87. Why such a large input series resistor?
  88. inductor+resistor network for headphone amp output?
  89. My Own Headphone Amp
  90. Diy headphone options for AKG k701's
  91. OPA2134 Input Stage...
  92. OPA2134+LM6172 composite amp ?
  93. dual purpose amp question.
  94. importance of output impedance for headphones?
  95. AKG 601 cable really BI-WIRE?
  96. OP-amp getting hot
  97. Headphone Amplifier project
  98. Modifying the SMSL SAP VI for low impedance headphones
  99. artwork on cans?
  100. My first Desktop HPA
  101. Volume control
  102. Best way to implement a voltage gain stage with opamp?
  103. DIY HEADPHONES
  104. Audeze LCD poor comfort – any mods?
  105. Headphone capsules: OEM stuff
  106. OPA2134/IRF510 Schematic...
  107. Need Headphone Amp Schematic for NJM4556
  108. Headphones for me, speakers for wife
  109. Headphone amp level = line level? (Maybe obvious question)
  110. My first HPA design...comments please!
  111. Transparent & Objective: My Objective 2 build
  112. My O2 Portable Amp
  113. O2 Front Panel
  114. My LM5532 Headphone Amplifier project
  115. CMOY with Common Collector Buffer
  116. CMoy Desktop with Buffers
  117. Objective o2 diy no sound
  118. Cmoy help please!
  119. µCmoy - My take on the portable CMoy amp
  120. My Headphone amp. Very diy...
  121. Opa2134 Max. Power dissipation
  122. 49600 single ended amp; I blew up the output caps!
  123. MultiLoop Amp Output impedance
  124. Need a small amplifier
  125. OPA2134 in parallel
  126. Desktop Cmoy with NJM4556 Buffers
  127. Portable headphone amp
  128. NJM4556 Output Impedance
  129. TPA6120A2 Input Bias Voltage Protection
  130. geek Wave DAP
  131. HPA-1 Class A Headphone Amplifier
  132. Very good Headphone Amplifier
  133. CMOY problem - any ideas welcome
  134. CMOY problem - any ideas welcome
  135. CMOY issues - all ideas welcome
  136. HELP: tuning for AKG601 + MJ mini tube amp
  137. Crosstalk issue with homebrew headphone amps
  138. A composite with LT1210 - another way of doing it
  139. CMoy Opa2134 minimum Gain
  140. Cmoy vs Chipamps
  141. DIY portable USB headphone AMP/DAC- recommended ICs?
  142. My first amp!
  143. Pot before a high pass filter
  144. CMoy Mod for drive speakers
  145. Old School tda2003 Headphone amp
  146. Noobie looking for a cheap heaphones amp
  147. Headphone amp from AN-272 Op Amp Booster Designs
  148. Elektor improved headphone preamp. Is it good quality?
  149. Cmoy with RA input?
  150. GAMECOM Headphone Cable
  151. Stereo crosstalk gets worse with frequency?
  152. Decware ZKIT3 Clipping
  153. WARNING hillyhifi
  154. 49600 Electrostatic Discharge Concerns
  155. So, your Grados are too bright?
  156. o2 flush gain switch?
  157. clip on heat sinks for TO-263
  158. Looking for a closed HP driver
  159. Headphone amp with RCA bypass grounding
  160. About Crossfeed concept
  161. Optimizing a TPA6120a2 layout
  162. Quality 6.35mm Stereo Headphone Socket?
  163. cmoy amp suggestions
  164. simple, high performance amp using DRV134?
  165. General Headphone Amplifier Survey
  166. O2 headamp PM latch PC board to stop O2 low battery buzzing
  167. Headphone system - volume pot placement.
  168. 2 wires for Return Terminal and 1 wire for (+) Terminal in EXPENSIVE Headphone cable
  169. Too simple MOSFET ESL amplifier
  170. summing to mono
  171. Inexpensive O2 faceplates on Ebay
  172. Headphone amp on perfboard: layout critics welcome
  173. *For Sale* objective 2 Failed to launch *For Sale*
  174. Producing Headphones
  175. Need help building a headphone relay
  176. Low cost Stax headphone amplifier
  177. Douglas self_Ground cancelling & 0-impedance ??
  178. 3,5 to RCA cable
  179. RJM Sapphire build thread:
  180. Mistakenly ordered a 100k pot for O2 amp.
  181. Broskie Headphone Amp - frequency response
  182. Brig, any thoughts?
  183. Help with volume independent humming...
  184. Benchmark headphone amp-white paper by John S.
  185. Simplest headphone amp circuit (something like you'd get in a walkman or MP3 player)?
  186. ATTN: Beyerdynamic owners
  187. new opamps break in
  188. 32 Ohm- actual impedance at diff. frequencies?
  189. Gilberd headphone amplifier
  190. Acoustics in closed vs. open design confusing - help needed!
  191. O2 amp troubleshooting - help a newbie!
  192. Headphones for music production
  193. Headphone Data Sheet Table with power, voltage & current
  194. Headphone amp also used as preamp for long cable
  195. ground question
  196. Adventures in Headamp Country
  197. GIBRID TELEFONE AMP.
  198. Grado SR60 and a near field sub
  199. SCHURTER - 4802.2330 - SOCKET, 3.5MM JACK, PCB, 3POLE
  200. Receiver Headphone output - modifications?
  201. Headphone amplifier that runs on 5V?
  202. Headphones that pick up FM transmitted stations?
  203. Components for KA2209 headphone amplifier?
  204. stereo jacks look dangerous!
  205. Minimal headphone circuit.
  206. +/- 8/10V from 5V USB power converter
  207. Help choosing replacement headphones
  208. Bluetooth Headphones - Bluedio's "R+"
  209. Need help understanding current loops...
  210. Little-Bear B1 modding..
  211. Headphone amplifier using SJ2520
  212. Wich Over-Ear Headphones and a Soundcard or DAC/AMP Combo?
  213. How to DIY headphones?
  214. 19J6 Millett amp
  215. Valuable dual opa for headphones amp
  216. Need travel headphones < 300 dollars
  217. Objective + ODAC modifications
  218. Help my cmoy is popping caps
  219. SOHA II amp tripping
  220. cisco power supply, grounding and the Millett starving student
  221. cisco power supply, grounding and the Millett starving student
  222. Help Summing Two Headphone Outputs
  223. question re crossfeed for low imped phones
  224. 6DJ8 headphone amp
  225. THD vs bias voltage for ESL headphones
  226. Just for fun
  227. Creek OBH-21 SE problem
  228. Current source in diamond buffer
  229. Where do I start? (re: need a DIY amp project)
  230. 6N OCC 24awg single strand for headphones ?
  231. From amp w/ "bare wire" output to headphones...
  232. My new headphone amp
  233. Why are external amplifiers superior?
  234. Headphones and Hearing aids
  235. Reacheargeable CMoy Amp??
  236. Testing headphones
  237. Discrete op amp headphone amplifier module, based on Marantz
  238. Koss ESP9 Headphones Low Volume Fixed!
  239. Please help with DIY headphone amp.
  240. Huginn, High performance, Class A, Lateral FET headphone amplifier
  241. MAT12 / MAT14 based headphone amp
  242. DC servo for Sijosae Buffer
  243. connect two inverting op amps together
  244. Yet Another Cmoy - PCB layout with Eagle and making PCB
  245. How to prevent unwanted volume adjustments on volume knob of a portable amp
  246. Project Ember ?
  247. O2 and power questions...
  248. Beyerdynamic A1 clone gold, opamp rolling
  249. Is there a better way to implement buf634 other than place in a a loop?
  250. An early look at my new HPA design

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