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  1. Op-amp for headphones
  2. OP AMP rolling, in the HA or PRE?
  3. Amp for Fostex T50rp Mk3 - Objective2 or other?
  4. 3.5 mm to rca
  5. Amp design help needed.
  6. DC servo high offset on startup?
  7. Koss warranty
  8. Universal buffer/headamp based on OPA1622
  9. Millett Butte Headphone Amp Problem
  10. 3-Transistor Headphone Amplifier
  11. DIY "Bullet Headphones"
  12. splitting ground planes
  13. Psychosis
  14. No-gain diamond buffer headphone amplifier advice
  15. Changing Cap Value for Frequency Change
  16. Old phono pre amp as headphone buffer?
  17. Diamond buffer as portable amplifier
  18. JFET-only Headphone Amp "Circlotron КП903B".
  19. zenkit1 with akg714pro or sennheiser hd650
  20. Need a Shure earphone kludge
  21. Unity gain buffer for Sennheiser HD600
  22. Stabilizing difference amplifiers for headphone applications
  23. Mu-stage with mosfet on top
  24. Audio to headphone amp via USB
  25. Linkwitz low impedance xfeed board
  26. How to measure volume output for pot selection?
  27. Faulty Headphones?
  28. Need help for TPA6120 Headphone Amplifier
  29. Hybrid tube/MOSFET headphone amp
  30. Noob Building a α20 Headphone Amp
  31. AM I CRAZY? DIY nearfield nude driver desktop headphone concept
  32. will it work?
  33. HPA design - bipolar supplies, transformers, etc
  34. Problems intigrating headphone preamp with phono amp, fm transmitter...
  35. Balanced vs unbalanced 4 wire connection
  36. my probably new cross-feed
  37. Help appreciated!
  38. Headphone amp/dac combo for 200 (o2/oDac vs Schiit Stack vs ???)
  39. Avoid Harsh Noises From Regulator Spikes
  40. HD598 and OPA2134
  41. Noob Building an F5-HA
  42. Advice Selecting ebay Headphone DIY Board
  43. Gilmore Headphone Amp
  44. SMSL Sap II too loud
  45. Diamond Buffer with DC Servo
  46. headphone amplifier
  47. Ear bud connector
  48. Tube amp kit ideas for Ultrasone Pro 500 cans
  49. Triode as double triode
  50. Headphone Amp to Pi and Dac + Pro
  51. Little-Bear p1 questions
  52. XEN ZGF Portable Headphone Amplifier
  53. audio amp recommendation
  54. Stax SRD-X input
  55. RCA input Headphone Amp, Any Exist?
  56. Simply direct coupled class a headphone amp
  57. Beyerdynamic A1 clone, need some help
  58. Looking for Bluetooth, synchronous headphone/mic transmitter
  59. Need help pre CMOY build
  60. Help choose between two kits
  61. the amplifier on the tantalic triode 3C24 for all types of earphones and acoustics.
  62. Preparing for first opamp build
  63. Dual mono LME49600
  64. How to wire up a mic for an iphone
  65. Indeed G2 12AU7 Amp - circuit repair help
  66. Crossfeed for HD600
  67. [Headamp] upgrading a Lehmann BCL clone
  68. Class-A Mosfet Headphone Amplifier
  69. Case Layout for Headphone Amp and RPi
  70. Pioneer SE-M290 headphone broken headband repair
  71. Objective 2 amp issues
  72. Yet another headamp..a few questions
  73. Headphones unbalanced after driver replacment
  74. hifisonix small signal class a?
  75. Upgrading the Aune X1 SE/Pro HeadAmp/DAC/Pre-amp
  76. I/V stage running hot
  77. bandpass filter
  78. "My" first design headamp, DC-servo question
  79. Recommend a kit for newbie
  80. My Headphone AMP w. OPA134 & BUF634
  81. $500+/- headphone for movies/casual gaming
  82. Walker Amp Wireless World 1971
  83. ATH-M40x
  84. mains hum
  85. QRV04 Headphone Amp. + Red Baron v5 DAC
  86. Southwest Technical Products Corp. (SWTPC) Headphone Amp 202-C
  87. Adapting my Cmoy to TRRS headphones
  88. Cmoy input resistor value?
  89. Toxic Fraud
  90. BUF634 Open Loop with Single Supply
  91. what is standart smartphone headphone audio output power (mW) at 32 ohms?
  92. Amp for connecting ATH-R70X to PC
  93. Starving Student (20EZ7)
  94. Ebay amp..
  95. Stereo passive somation
  96. Focal Spirit One mod
  97. This is what happens...
  98. Stax pro SRD-7 hum
  99. Cmoy, Charge Pump Inverter, Regulated
  100. TPA6120 Output Impedace
  101. Opa2134 + Buf634 output impedance
  102. 8-pin 6.5mm headphone connector pinouts are needed
  103. TPA6120 Single Supply
  104. Biasing OPAMP to class A [Hi Current type]
  105. cmoy with a 2 x 12v psu
  106. DIY Headphone Amp - Comments and advice appreciated
  107. HRTFs and the AES69-2015
  108. Terry Gesualdo Headphone Adapter
  109. About HA5000 Design
  110. Chassis mount jack socket help
  111. Simple Diy headphone amp
  112. Headphone amp with 2SK1058
  113. Headphone output on push-pull amplifier?
  114. Since the njm4556 are so cheap... class a biasing
  115. An inverting version of the NwAvGuy O2 headphone amp vs. the original: THD+N
  116. How to add Headphone amplifier to Silicon Chip 2009 DAC?
  117. Hissing problem of a hybrid amp
  118. Amp matching to headphones
  119. I need new headphones
  120. my great sounding tube hpa
  121. Sennheiser headband repair
  122. Help with bass amp for headphones for study purposes
  123. cmoy op amp virtual ground question
  124. parallel opamp amplifier
  125. Isolate 2 headphone amps with one source - HELP!
  126. TPA6120 Breakout - Free Design Files
  127. PCM2707 and TPA6120 Amp - Boards and Design Files
  128. Recommendations for Closed-Back Headphones
  129. Headphones with dual jack, reduced volume
  130. Fault finding, BCL Clone, help needed.
  131. Low Impedance Headphone/Earphone Amp
  132. Do you use your O2 as desktop, portable, or both?
  133. Passive Bass Boost circuit?
  134. Looking for a schematic..
  135. Noise, too much noise.
  136. Pono in Balanced Mode
  137. Gaming Headphones mod ideas
  138. Material for Headphone cushion and fabric?
  139. Good low impedance headphone amp project
  140. Suggestion for headphone
  141. Anyone ID these headphones?
  142. My first headamp project
  143. Xfeed network
  144. Amp suggestion
  145. single-ended (hope:) ) headphone amplifier with minimal NFB and low THD
  146. Cavalli's EHHA r1 kit question
  147. Headphone amp series current limiter resistor
  148. HD600 recabling
  149. Tube amp with usb
  150. A little compilation Erwin's Amp
  151. Help with faulty Pioneer Headphones please?
  152. Sound Magic Hp200 Premium Audiophile headphones!
  153. Using sApii Pro TPA6120a2 at lower voltage?
  154. Grasshopper
  155. My mobile Headphone AMP w. OPA134 & BUF634
  156. Trying to convert a pre amp to an headphone amp I could use some help..
  157. what's up with Headwize website ?
  158. Digital potentiometer. Distortion and line level
  159. MOSFET amp instability
  160. Is the O2/ODAC combo right for me? Are there better alternatives for me?
  161. limited soundstage with headphones
  162. headset to microphone
  163. Does anyone know how to use the digital potentiometer DS1882
  164. High Fidelity Ear Protection: "Protect your ears from bad sounding HiFi systems!"
  165. Need Help With DIY Switch Box
  166. Looking for a simple high quality amp to drive 600 ohm load
  167. Load output resistors in parallel opamps amplifier
  168. Bone conduction headphones
  169. headphone cable choice
  170. Headphones on TA2024 Single powered D Class amp
  171. Help with volume control on a headphone amplifier?
  172. SIT Headphone amplifier (VFET S.F. buffer)
  173. Headphone impedance matching with tube head amp
  174. My O2 & Subbu DAC build
  175. Monster headphone rebuild - need help please
  176. Amplifier for akg k340 (400ohms)
  177. Single NE5532 driving 38ohms?
  178. class A Buffer
  179. Headphones invention challenge with Harman Audio
  180. DIY 12AU7 Hybrid Amp voltage variances
  181. O2 amp only playing sound through one channel
  182. Tone control
  183. Another site noob needing help with his O2!!
  184. Portable LME49720 Headphone Amp
  185. schematic request for tpa6120/ne5534 ebay amp
  186. Cable Dongle ? What is it?
  187. Are these ICs legitimate?
  188. single NE5532P headphone amp ?!
  189. How does op amp introduce power supply noise to output?
  190. CFA Headphones amplifier
  191. Which resistor value for Gain
  192. lme49600 pcb for discrete jensen 918
  193. Headphone Buffer With Power Supply
  194. How to calculate Zobel/Boucherot Circuit
  195. MSA 30X Sound Amplifier
  196. Headphone Power Buffer
  197. 100Hz Hum in Lehmann Linear clone
  198. What you guys think of this Headphone amp?
  199. Personal Monitor System
  200. OBH-11 passive preamp mod
  201. "The Crocodile"
  202. PCM2407 DAC click & pop issue.
  203. Balanced Headphone amplifier for HiRes Bluray
  204. Shorted Channels w/o apparent effect on SQ
  205. ESL headphones and amp.
  206. Which Amp best suited for Earphone
  207. OUTONE Pseudobridge system
  208. Which amplifier for Sennheiser HD 598?
  209. Headphone Amp IC
  210. HIGH performance HeadPhone amplifier OUTONE
  211. Another take on the Diamond Buffer
  212. First Headphone Amp Build
  213. Another implementation of Class A buffer for headphone
  214. Schematic help for wierd problem.
  215. CMoy with other Chips
  216. HiFi Headphone Amp for Recording Studio
  217. special tool for 3.5mm strain relief?
  218. IEM Amp Design Help
  219. Converting the Bugle2 to a headphone amp?
  220. A High-Quality, High-Power Headphone Amplifier
  221. Stereo intercom for my experimental airplane
  222. [ask] Is there a way to mod a CMOY amp to have more power?
  223. Opa551 getting very hot in inverting configuration
  224. low impedence buffer
  225. A simple 2-Ch mixer, suggestions, ideas?
  226. O2 Amp Build - Resistor Question
  227. How to bypass volume potentiometer Sennheiser PC360
  228. DC protection for headphones
  229. Should replacement headphone cable telescope the shield?
  230. Headphone Attenuator, Or do I need an amp
  231. starting diy with a cmoy
  232. Neodymium Magnets - Strength/Weight
  233. Which Class-A Build?
  234. Headphone Mic Wiring
  235. Portabel Headphone Amplifier
  236. Precission EQ of Headphones
  237. Ribbon Microphones for Noise Canceling
  238. adding 18 watt valve amp on pc
  239. 5x5 Headphone amplifier/Preamplifer
  240. Headphone amp?
  241. Isodynamic Planar Magnetic Headphones
  242. ATH-DN1000USB Audio Technica DNote Digital USB Headphone
  243. Simple SE buffer, any better idea ?
  244. Ribbon Drivers in Headphones
  245. 600 Ohm headphones that are not Beyerdynamic
  246. First time building CMOY - Need some help
  247. specification of headphone
  248. Differences in headphones and speaker amps
  249. Head 'n' HiFi - Walter: O2 Headphone Amp Kit
  250. head amp for AKG K-2xx serie(600 Ohm)

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