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  1. Anyone Recognize this Headphone Amp?
  2. Headphone surgery?
  3. This seems like a good amplifier... tell me I'm wrong.
  4. Questions about Meier crossfeed
  5. Direct Microphone -> Headphone Amp
  6. Stax SR-X MkII repair
  7. Merlins SSG Headphone amp
  8. "Estudiante" Hybrid (7370 + MOSFET)
  9. Anyone recognize this headphone amp pcb?
  10. AmpCasq: an OPA1622 integrated headamp project
  11. Autotransformer (no gain)
  12. question about ckkiii headamp
  13. Headphone amp using TI TPA6110A2
  14. Cmoy amp - unbalanced ground ?
  15. Lowest parts count grado amp.
  16. Better railsplitter (virtual ground)
  17. Silicon Chip DAC 2007 adding headphone out with volume control
  18. Active Crossfeed
  19. My Blue Hawaii Tube Amplifier version
  20. Output Impedance & Planars
  21. Schematic for Ebay Beyerdynamic A1 Amp
  22. Building Headphones from scratch
  23. Blind Virtual Audition of Several Headamps
  24. The Quad Squad Head Phone Amplifier
  25. CanJam NYC Feb 4,5
  26. O2 Measurements & Review
  27. Bottlehead Crack manual help
  28. Death Of Zen Headphone Amplifier
  29. Choosing solution, Audio transformer or op-amp booster circuit?
  30. VU meter for headphone amp
  31. Chassis mount version of Edcor PCW10k-7k/300-32
  32. Re: Pavouk Headphone amp PC boards
  33. Balanced DAC and The Wire BAL-BAL in one case
  34. Help me with this headamp/buffer
  35. anyone recognize this headphone brand?
  36. Help with a headphone jack and potentiometer
  37. Beyerdynamic A2 Clone on Ebay
  38. Are balanced headphones amps really better?
  39. AKG k240 DIY Recommendations
  40. BF862 based SE Class A Headamp without the HEAT
  41. X5 headphone Amplifier
  42. Neurochrome HP-1: Ultra-High End Headphone Amp
  43. THX AAA head amp for iPhone, other projects
  44. headphone amps for use with mobile
  45. tube amp with output transformer
  46. Apheared 47 bypass cap
  47. Death Of Zen Headphone Amplifer/ Music Server
  48. New STAX lambdas, SR-L300,L500
  49. Theremin headphone amplifier.
  50. DIY headphone amp for IEMs
  51. Interface an RA 200 headset. to a Pro Intercom BP1
  52. Which Headphone Amp Advise Please?
  53. simple "passive" Crossfeed
  54. Dual Chip Cmoy
  55. 30 ohms of amplifier output impedance does not matter
  56. Sony ZX770BT vs ZX770BN
  57. How can I improve my sound with my takstar 671 ?
  58. Alternative to the lme49713 ?
  59. [Need help] I'm not satisfied with my DIY amp
  60. Sanity check for guitar mixer headphone amplifier
  61. Need a good and tested design
  62. Stax SRD 6/SB transformers for segmented speaker-panel above 10 kHz ? ?
  63. Noise cancelling earbuds for job
  64. help for single stage tube headphone amplifier
  65. is dc or ac powr suppy,mini op amp???
  66. german maestro 8,35D
  67. TI OPA1622EVM headphone driver eval board unboxing and hookup, part 1
  68. Help building DAC/HP Amp with ES9038PRO
  69. Why would a product have a headphone amp AND an audio op amp for headphones?
  70. Looking for headphone amp
  71. Noisy left channel
  72. objective 2 and beyerdynamic dt 990 pro 250 ohm
  73. headphones for large ears
  74. iPhone 7 is ditching the 3.5mm headphone jack
  75. Headphones on Speaker outputs
  76. JB Systems Beat6 headphone distortion
  77. Op-amp with darlington in feedback loop.
  78. Please review my first headphone amp design
  79. The smaller, flexible and stronger audio jack on kickstarter
  80. PASS ZEN single-end Class A Headphone amplifier
  81. Is www.electromod.co.uk working?
  82. Little Bear P8
  83. What chip is the LME49610 successor?
  84. Headphone amplifier selector
  85. Earbuds? At this moment...
  86. 6as7g powered OTL headphone amps
  87. Musical Fidelity 200 vs Sony MDR-10c
  88. Electrostatic Amp Build Thread
  89. Headphone amp sounds gritty and the 19MHz
  90. modifying amp for use with headphones
  91. E19 headphone amplifier board K2381 J407 MOSFET Yuanjing Audio
  92. Problem with Servo Circuit on my OP Amp Headphone Amp
  93. Change UE900 to PH-3504RH experience
  94. converting amplified pc speakers into multiple headphone amp
  95. How good are these China drivers?
  96. About using kapton for electrostatic headphone
  97. Looking for DIY headphone amp with low z hp support
  98. Hifi Hearing Aid
  99. [Help] Headamp design & layout
  100. OPA1688 Super CMOY, 2x 9V with real ground and headphone relay - PCBs
  101. Good class A headphone amp to build?
  102. Full noob, but would like to learn more and build
  103. Advice on finding a Power Supply for the O2 amp in Japan/100v
  104. Simple head-amp with high linearity
  105. Help for some issues regarding amp internal rewiring
  106. XEN SHPP -- Simple Headphone Protection
  107. Ultra-Hi-Res headamp
  108. a diy portable headphone amp system.
  109. Damping factor, could someone refresh my mind?
  110. Rudistor NX-03 clone
  111. Op-amp for headphones
  112. OP AMP rolling, in the HA or PRE?
  113. Amp for Fostex T50rp Mk3 - Objective2 or other?
  114. 3.5 mm to rca
  115. Amp design help needed.
  116. DC servo high offset on startup?
  117. Koss warranty
  118. Universal buffer/headamp based on OPA1622
  119. Millett Butte Headphone Amp Problem
  120. 3-Transistor Headphone Amplifier
  121. DIY "Bullet Headphones"
  122. splitting ground planes
  123. Psychosis
  124. No-gain diamond buffer headphone amplifier advice
  125. Changing Cap Value for Frequency Change
  126. Old phono pre amp as headphone buffer?
  127. Diamond buffer as portable amplifier
  128. JFET-only Headphone Amp "Circlotron КП903B".
  129. zenkit1 with akg714pro or sennheiser hd650
  130. Need a Shure earphone kludge
  131. Unity gain buffer for Sennheiser HD600
  132. Stabilizing difference amplifiers for headphone applications
  133. Mu-stage with mosfet on top
  134. Audio to headphone amp via USB
  135. Linkwitz low impedance xfeed board
  136. How to measure volume output for pot selection?
  137. Faulty Headphones?
  138. Need help for TPA6120 Headphone Amplifier
  139. Hybrid tube/MOSFET headphone amp
  140. Noob Building a α20 Headphone Amp
  141. AM I CRAZY? DIY nearfield nude driver desktop headphone concept
  142. will it work?
  143. HPA design - bipolar supplies, transformers, etc
  144. Problems intigrating headphone preamp with phono amp, fm transmitter...
  145. Balanced vs unbalanced 4 wire connection
  146. my probably new cross-feed
  147. Help appreciated!
  148. Headphone amp/dac combo for 200 (o2/oDac vs Schiit Stack vs ???)
  149. Avoid Harsh Noises From Regulator Spikes
  150. HD598 and OPA2134
  151. Noob Building an F5-HA
  152. Advice Selecting ebay Headphone DIY Board
  153. Gilmore Headphone Amp
  154. SMSL Sap II too loud
  155. Diamond Buffer with DC Servo
  156. headphone amplifier
  157. Ear bud connector
  158. Tube amp kit ideas for Ultrasone Pro 500 cans
  159. Triode as double triode
  160. Headphone Amp to Pi and Dac + Pro
  161. Little-Bear p1 questions
  162. XEN ZGF Portable Headphone Amplifier
  163. audio amp recommendation
  164. Stax SRD-X input
  165. RCA input Headphone Amp, Any Exist?
  166. Simply direct coupled class a headphone amp
  167. Beyerdynamic A1 clone, need some help
  168. Looking for Bluetooth, synchronous headphone/mic transmitter
  169. Need help pre CMOY build
  170. Help choose between two kits
  171. the amplifier on the tantalic triode 3C24 for all types of earphones and acoustics.
  172. Preparing for first opamp build
  173. Dual mono LME49600
  174. How to wire up a mic for an iphone
  175. Indeed G2 12AU7 Amp - circuit repair help
  176. Crossfeed for HD600
  177. [Headamp] upgrading a Lehmann BCL clone
  178. Class-A Mosfet Headphone Amplifier
  179. Case Layout for Headphone Amp and RPi
  180. Pioneer SE-M290 headphone broken headband repair
  181. Objective 2 amp issues
  182. Yet another headamp..a few questions
  183. Headphones unbalanced after driver replacment
  184. hifisonix small signal class a?
  185. Upgrading the Aune X1 SE/Pro HeadAmp/DAC/Pre-amp
  186. I/V stage running hot
  187. bandpass filter
  188. "My" first design headamp, DC-servo question
  189. Recommend a kit for newbie
  190. My Headphone AMP w. OPA134 & BUF634
  191. $500+/- headphone for movies/casual gaming
  192. Walker Amp Wireless World 1971
  193. ATH-M40x
  194. mains hum
  195. QRV04 Headphone Amp. + Red Baron v5 DAC
  196. Southwest Technical Products Corp. (SWTPC) Headphone Amp 202-C
  197. Adapting my Cmoy to TRRS headphones
  198. Cmoy input resistor value?
  199. Toxic Fraud
  200. BUF634 Open Loop with Single Supply
  201. what is standart smartphone headphone audio output power (mW) at 32 ohms?
  202. Amp for connecting ATH-R70X to PC
  203. Starving Student (20EZ7)
  204. Ebay amp..
  205. Stereo passive somation
  206. Focal Spirit One mod
  207. This is what happens...
  208. Stax pro SRD-7 hum
  209. Cmoy, Charge Pump Inverter, Regulated
  210. TPA6120 Output Impedace
  211. Opa2134 + Buf634 output impedance
  212. 8-pin 6.5mm headphone connector pinouts are needed
  213. TPA6120 Single Supply
  214. Biasing OPAMP to class A [Hi Current type]
  215. cmoy with a 2 x 12v psu
  216. DIY Headphone Amp - Comments and advice appreciated
  217. HRTFs and the AES69-2015
  218. Terry Gesualdo Headphone Adapter
  219. About HA5000 Design
  220. Chassis mount jack socket help
  221. Simple Diy headphone amp
  222. Headphone amp with 2SK1058
  223. Headphone output on push-pull amplifier?
  224. Since the njm4556 are so cheap... class a biasing
  225. An inverting version of the NwAvGuy O2 headphone amp vs. the original: THD+N
  226. How to add Headphone amplifier to Silicon Chip 2009 DAC?
  227. Hissing problem of a hybrid amp
  228. Amp matching to headphones
  229. I need new headphones
  230. my great sounding tube hpa
  231. Sennheiser headband repair
  232. Help with bass amp for headphones for study purposes
  233. cmoy op amp virtual ground question
  234. parallel opamp amplifier
  235. Isolate 2 headphone amps with one source - HELP!
  236. TPA6120 Breakout - Free Design Files
  237. PCM2707 and TPA6120 Amp - Boards and Design Files
  238. Recommendations for Closed-Back Headphones
  239. Headphones with dual jack, reduced volume
  240. Fault finding, BCL Clone, help needed.
  241. Low Impedance Headphone/Earphone Amp
  242. Do you use your O2 as desktop, portable, or both?
  243. Passive Bass Boost circuit?
  244. Looking for a schematic..
  245. Noise, too much noise.
  246. Pono in Balanced Mode
  247. Gaming Headphones mod ideas
  248. Material for Headphone cushion and fabric?
  249. Good low impedance headphone amp project
  250. Suggestion for headphone

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