View Full Version : Headphone Systems

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  1. CMoy Desktop with Buffers
  2. Objective o2 diy no sound
  3. Cmoy help please!
  4. µCmoy - My take on the portable CMoy amp
  5. My Headphone amp. Very diy...
  6. Opa2134 Max. Power dissipation
  7. 49600 single ended amp; I blew up the output caps!
  8. MultiLoop Amp Output impedance
  9. Need a small amplifier
  10. OPA2134 in parallel
  11. Desktop Cmoy with NJM4556 Buffers
  12. Portable headphone amp
  13. NJM4556 Output Impedance
  14. TPA6120A2 Input Bias Voltage Protection
  15. geek Wave DAP
  16. HPA-1 Class A Headphone Amplifier
  17. Very good Headphone Amplifier
  18. CMOY problem - any ideas welcome
  19. CMOY problem - any ideas welcome
  20. CMOY issues - all ideas welcome
  21. HELP: tuning for AKG601 + MJ mini tube amp
  22. Crosstalk issue with homebrew headphone amps
  23. A composite with LT1210 - another way of doing it
  24. CMoy Opa2134 minimum Gain
  25. Cmoy vs Chipamps
  26. DIY portable USB headphone AMP/DAC- recommended ICs?
  27. My first amp!
  28. Pot before a high pass filter
  29. CMoy Mod for drive speakers
  30. Old School tda2003 Headphone amp
  31. Noobie looking for a cheap heaphones amp
  32. Headphone amp from AN-272 Op Amp Booster Designs
  33. Elektor improved headphone preamp. Is it good quality?
  34. Cmoy with RA input?
  35. GAMECOM Headphone Cable
  36. Stereo crosstalk gets worse with frequency?
  37. Decware ZKIT3 Clipping
  38. WARNING hillyhifi
  39. 49600 Electrostatic Discharge Concerns
  40. So, your Grados are too bright?
  41. o2 flush gain switch?
  42. clip on heat sinks for TO-263
  43. Looking for a closed HP driver
  44. Headphone amp with RCA bypass grounding
  45. About Crossfeed concept
  46. Optimizing a TPA6120a2 layout
  47. Quality 6.35mm Stereo Headphone Socket?
  48. cmoy amp suggestions
  49. simple, high performance amp using DRV134?
  50. General Headphone Amplifier Survey
  51. O2 headamp PM latch PC board to stop O2 low battery buzzing
  52. Headphone system - volume pot placement.
  53. 2 wires for Return Terminal and 1 wire for (+) Terminal in EXPENSIVE Headphone cable
  54. Too simple MOSFET ESL amplifier
  55. summing to mono
  56. Inexpensive O2 faceplates on Ebay
  57. Headphone amp on perfboard: layout critics welcome
  58. *For Sale* objective 2 Failed to launch *For Sale*
  59. Producing Headphones
  60. Need help building a headphone relay
  61. Low cost Stax headphone amplifier
  62. Douglas self_Ground cancelling & 0-impedance ??
  63. 3,5 to RCA cable
  64. RJM Sapphire build thread:
  65. Mistakenly ordered a 100k pot for O2 amp.
  66. Broskie Headphone Amp - frequency response
  67. Brig, any thoughts?
  68. Help with volume independent humming...
  69. Benchmark headphone amp-white paper by John S.
  70. Simplest headphone amp circuit (something like you'd get in a walkman or MP3 player)?
  71. ATTN: Beyerdynamic owners
  72. new opamps break in
  73. 32 Ohm- actual impedance at diff. frequencies?
  74. Gilberd headphone amplifier
  75. Acoustics in closed vs. open design confusing - help needed!
  76. O2 amp troubleshooting - help a newbie!
  77. Headphones for music production
  78. Headphone Data Sheet Table with power, voltage & current
  79. Headphone amp also used as preamp for long cable
  80. ground question
  81. Adventures in Headamp Country
  83. Grado SR60 and a near field sub
  84. SCHURTER - 4802.2330 - SOCKET, 3.5MM JACK, PCB, 3POLE
  85. Receiver Headphone output - modifications?
  86. Headphone amplifier that runs on 5V?
  87. Headphones that pick up FM transmitted stations?
  88. Components for KA2209 headphone amplifier?
  89. stereo jacks look dangerous!
  90. Minimal headphone circuit.
  91. +/- 8/10V from 5V USB power converter
  92. Help choosing replacement headphones
  93. Bluetooth Headphones - Bluedio's "R+"
  94. Need help understanding current loops...
  95. Little-Bear B1 modding..
  96. Headphone amplifier using SJ2520
  97. Wich Over-Ear Headphones and a Soundcard or DAC/AMP Combo?
  98. How to DIY headphones?
  99. 19J6 Millett amp
  100. Valuable dual opa for headphones amp
  101. Need travel headphones < 300 dollars
  102. Objective + ODAC modifications
  103. Help my cmoy is popping caps
  104. SOHA II amp tripping
  105. cisco power supply, grounding and the Millett starving student
  106. cisco power supply, grounding and the Millett starving student
  107. Help Summing Two Headphone Outputs
  108. question re crossfeed for low imped phones
  109. 6DJ8 headphone amp
  110. THD vs bias voltage for ESL headphones
  111. Just for fun
  112. Creek OBH-21 SE problem
  113. Current source in diamond buffer
  114. Where do I start? (re: need a DIY amp project)
  115. 6N OCC 24awg single strand for headphones ?
  116. From amp w/ "bare wire" output to headphones...
  117. My new headphone amp
  118. Why are external amplifiers superior?
  119. Headphones and Hearing aids
  120. Reacheargeable CMoy Amp??
  121. Testing headphones
  122. Discrete op amp headphone amplifier module, based on Marantz
  123. Koss ESP9 Headphones Low Volume Fixed!
  124. Please help with DIY headphone amp.
  125. Huginn, High performance, Class A, Lateral FET headphone amplifier
  126. MAT12 / MAT14 based headphone amp
  127. DC servo for Sijosae Buffer
  128. connect two inverting op amps together
  129. Yet Another Cmoy - PCB layout with Eagle and making PCB
  130. How to prevent unwanted volume adjustments on volume knob of a portable amp
  131. Project Ember ?
  132. O2 and power questions...
  133. Beyerdynamic A1 clone gold, opamp rolling
  134. Is there a better way to implement buf634 other than place in a a loop?
  135. An early look at my new HPA design
  136. O2 XLR, St/Mono swtich, etc Mod. ?'s
  137. A question regarding bass boost and output buffers
  138. O2 headamp output booster PCB
  139. cMoybb op amp rolling with AD797BRZ
  140. Millett Hybrid Starving Student (12AU7)
  141. Good capacitors for cmoy
  142. mysterious headphones
  143. New 4 layer LME49610 Headphone Amplifier D1
  144. Simple Headphone's Amp for beginner
  145. upgrading x-can V1? anyone?
  146. Headphone Amps DIY for beginners
  147. some question about headphone amp (possibly the o2)
  148. Unknown Stax Headphones for SRD-7
  149. Moskido Hybrid headphone amplifier! Help needed
  150. Lowest capacitance hum-rejecting 4-wire headphone cable configuration
  151. Best amp possible for the hd-650
  152. Looking for a Headphone Amplifier
  153. Shure Earphones SE846
  154. Headphone equalization hardware and software
  156. pcb layout for grado ra1 ?
  157. grado ra1 clone
  158. Szekeres vs. PRR-SOL amplifier
  159. Optimal grounding
  160. 4 channel stereo mixer
  161. New PC setup.
  162. Class A Heaphone Amp
  163. DIY Headphone Tap + Passive Mixer
  164. Beats by Dr Dre headphones or alternative models/brands?
  165. In line sound limiter for headphones
  166. Adjustable Ear phone volume limiter
  167. MOSFET follower to my phone
  168. Crazy CMOY board
  169. starving student vs jonokuchi or hybrid vs tubes for hd600 and sr80i ?
  170. Tube/SS OTL single tube recommendations
  171. Pseudo Bravo headphone amplifier
  173. Single valve amp
  174. My desktop Objective2 amp
  175. O2 loud turn on transient fix help...
  176. Help wanted to find an old schematic
  177. Dual TPA6120A2 headphone design to eliminate crosstalk
  178. Need an AMP recommendation, and have a couple questions.
  179. Pot value in cmoy
  180. YAHA HELP
  181. OPA827 + Diamond Buffer
  182. newbie qustion
  183. Advice on USB Soundcard / USB DAC + Amplifier
  184. 6n2 + fu32 vacuum tube tube headphone amplifier
  185. Headphone amp recommendation required?
  186. Tube Headphone amplifier suggestions 2x(1:40) transformers
  187. Different grounding, different sound quality or what can be the problem?
  188. Radio Shack Digital to Analog Converter
  189. 2SC1815 alternative for Mini Zen
  190. Two-Way Headset Wiring
  191. whats worng with this circut
  192. Phono amp top slot board for O2 amplfier in B3 case
  193. Szekeres VE protection diodes?
  194. Headphone Amp Feels 'Electrified'
  195. Design Issue: Cascaded passive filer stages
  196. Headphone amp between source & amplifier - how to passthrough?
  197. Open Source Headphone Amplifier
  198. OPA2132/4 for headphones
  199. O2 LiPo Daughterboard
  200. Class AB with op-amp input, audible noise
  201. PCB check for a simple amp
  202. Home meade design AMP prob's
  203. Noise - how much is too much?
  204. Massively parallel LME49990 headamp
  205. Building the O2 - A novices build experience
  206. A Through-hole "Wire" Amp
  207. Adding a headphone output to CD PLAYER?
  208. Rod Elliot 113 - Headphone amp TOO MUCH GAIN
  209. Dual O2-Inspired, SMD Headphone Amp
  210. Low impedance phones, Please suggest amp design?
  211. Huge change in audio quality simply by changing the pads on headphones?
  212. what next, help please
  213. DIY isodynamic headphones?
  214. DIY replace jack plug: strange colors
  215. Canjam 2013 ?
  216. Can you disable DAC on O2 ODAC?
  217. Can i connect my sony pulse wireless heaset to a TV ?
  218. Audio controlled voltage mod.
  219. AKG K518
  220. Composite amplifier in class A
  221. A great Fostex T50RP amp?
  222. helmet speakers
  223. Ambisonics, and listening to binaural via speakers
  224. Cheap but linear headamp
  225. Thin Durable Flexible Wire to Fix Headphones
  226. If headphones are out-of-phase, can you hear it?
  227. Oatley K272 DC power options.
  228. A curious Inquiry involving internal headphone amp/powering multiple earbuds?
  229. recommend me a valve headphone amp - Beyer T1 & AKG Q701 etc
  230. HP amp out impedance vs. HP impedance
  231. O2 help with bass boost and 1/4 jack mods
  232. Anyone ever used LM4780 for headphones?
  233. Stax Type 1 headphone, anyone know what these are?
  234. DIY balanced headphone amp?
  235. Simple headphone amp from spare parts
  236. SENNHEISER HD800 Source Impedance
  237. TDA1308 - changing gain resistors
  238. Headphone Amp Selection?
  239. Classic v1 headphone amplifier
  240. RFI problems on diy headphone amp.
  241. power flickering on tube cmoy amp
  242. question about a circuit
  243. hello all is a dac worth buying
  244. Passive bell shaped EQ for headphones
  246. HD650 can I fix this?
  247. Headphones Amplifier HIFI
  248. An "O3" - 35% smaller SMD RS O2 headphone amp version
  249. need help with headphones
  250. Moe'stevens O2

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