View Full Version : Headphone Systems

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

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