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  1. Connecting Mp3 player
  2. DIY Tone + Volume control
  3. volume control
  4. Linkwitz-Riley Electronic Crossover PCB
  5. Balanced Microphone Preamp
  6. How Much Voltage Do I Need For a Standard Headphone
  7. Yet another passive volume control
  8. Distortion and Source Impedance in JFET Input Op Amps
  9. Analog switches
  10. Yuan Jing 6n3 tube preamp power requirements and options
  11. PGA2310 frequency response
  12. Smoking Preamplifier
  13. Carver C1 preamp
  14. Meridian 201 help
  15. Active speaker- adding amp/xo
  16. basic power supply questions
  17. McIntosh C26 hum after recaping
  18. Old Volvo Tape Deck Line Level to Tape Head
  19. I Need A New Audio Input Indicator
  20. Handy Non Inverting Active Volume Control
  21. Active volume control - Be quiet please.
  22. Complementary MOS Preamp
  23. BUFFER /LINE STAGE/ BEST POSSIBLE SPEC and SOUND
  24. Simple Symmetrical Preamplifier
  25. EMT-240, EMT 262
  26. Looking for that person who can analyze and upgrade.
  27. TKD stereo attenuator 10k
  28. Douglas self four-band baxandall eq
  29. Input Noise Cancelation - LME 49990 - LT1028
  30. Baxandall Variations
  31. HELP! Electret mic - Powering from Focusrite mic preamp with 48v
  32. Output Transformer for INA217 Mic Preamp?
  33. Advise please on EQ restore...
  34. Recommendations for pre/mixer/thing boards or etc.?
  35. Daisy chain components
  36. Unidirectional Electert Mic and Preamp help.
  37. Rotary stepped attenuator (series) instructions?
  38. High Quality Splitters and Mixers
  39. Which transformations inside this Django?
  40. Balanced stepped attenuator with constant input impedance
  41. 4-ch unbalanced as stereo balanced?
  42. zobel network at driver Fs?
  43. another relay input/volume controller
  44. Basic Inverting Opamp HUM
  45. Recommendations for a simple, opamp-based low-gain stage?
  46. Art Project needs advise, wall of boomboxes
  47. Attenuator design for a modular synth?
  48. Pot values for tone control - from 25k to 10k
  49. Needing Stereo to Mono Summing help...
  50. 2.1 preamp
  51. A little advice, re capping
  52. 8 ohm volume pot
  53. Naim NAC 32.5 Gain board lower gain
  54. P7 Mini Preamp Possible Improvements
  55. Hum issue in hpf circuit
  56. CS3318 Volume Control board with IR?
  57. Balanced line behaviour on Mixer's output
  58. Akitika PR101 Preamp by Dan Joffe
  59. Which one of these wiring schemes will have lower noise?
  60. Need help identifying preamp internals. Conrad Johnson PV-1?
  61. New edition D. Self Small Signal Audio Design
  62. Subwoofer preamplifier with low frequency boost below 30Hz?
  63. Spectrum analyser using LM3915
  64. 9V opamp suggestions
  65. Circlotron LINE and RIAA Pre-Amplifiers wanted
  66. JFET choice for transformer coupled mic preamp
  67. understanding source+return current flow on PCBs
  68. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  69. can use la3161 as a simple solution in a car ?
  70. crossover commission/kit
  71. Switch both sides of input connections?
  72. Hammond 140QEX
  73. Current Amplifyer
  74. An Old Nikko power-supply section question
  75. THAT 202XT VCA + ?
  76. Need analog guru help on grounding
  77. iRig Pre Component Upgrade
  78. Calculating a TVC
  79. Balanced Microphone Preamplifier
  80. Electret Condenser Microphone preamp analysis
  81. LF Line Level Stage design to preceed class D amplifier
  82. Mic Preamp w transformer input: changing impedance
  83. Line level / unity gain vacuum tube circuits
  84. Interpret stereophile measurement data
  85. Diy passive pre and switch
  86. slow audio increase at turn on?
  87. Hammond Amplifier Modification Issue
  88. Would like some help with a "Crossover Isolator"
  89. Correct way to split line level inside dual headphone amp
  90. How can this work?
  91. Balanced input
  92. crossover / summer for "2.1" active or passive
  93. Need Advice for Bi-amping
  94. Too much DC at buffer's output
  95. passive pre-amp ?
  96. Salvaged Phono Preamp - Begginner Help
  97. Tape head amplification circuit
  98. Laptop to Guitar Amp cable. . . Resistor values?
  99. Hifi from german studio modules - help wanted
  100. Guard rings for op amps
  101. Tone control for Low bass selector and boost circuit
  102. "Lehmann" Buffer Output Transistors.
  103. Minuature Low Pass Filter
  104. Easy High-Pass Filter
  105. Analog signal control
  106. Buffer Stage
  107. Critique my first drawing / possible build [Active DI]
  108. Low pass filter for Bitstream DAC.
  109. Looking for 0-10V Analog Volume Control Circuit
  110. AVC
  111. looking for programmable eq chip / pcba module ??
  112. Another Modified PGA2311 kit with Arduino for volume control and input selection
  113. Kudies to/for the Tortuga Audio LDR3X.V2
  114. Parasound P/HP 850
  115. LECUA 1000 attenuator from Luxman ?
  116. Line Level Output to Guitar Amplifier Input
  117. is there an off the shelf preamp module that works with the apple remote?
  118. How about this sub crossover filter?
  119. help with 2 pole low pass filter/attenuator
  120. Zobel at the srpp input
  121. Preamp noise after PSU update
  122. Low level interconnect (RCA) measurements
  123. what are the blocks generally found in a pre-amp board?
  124. Carver ct-3 preamp
  125. Advice on a preamp/external volume control for use with active monitors
  126. Audiophile quality preamp
  127. Building a Line Level Mixer, Transformer advice needed
  128. Sowter type 3232
  129. Super tone controls-I need PCB
  130. L-pad attenuator on preamp output
  131. DI output protection from phantom power
  132. Getting Started on Preamp Design
  133. Balanced to unbalanced.
  134. Input device protection
  135. WTB LDR volume control PCB ?
  136. Adding Input Gain +/-
  137. Room correction using a modified Linkwitz Transform Circuit
  138. How to change active xover frecuencies
  139. non inverting opamp with gain
  140. Digital volume control for 7.1 preamp
  141. Current options for a budget active LLXO?
  142. low impedance high-pass filter
  143. AKG Perception 100 mic repair
  144. How do I configure a simple logic control
  145. PCB, Tone Control with Transistors and dual supply
  146. very very simple DJ mixer aka summing amp?
  147. Passive low pass filter for subwoofer
  148. Linn Exotik/S non DA version lock up problem
  149. Shine7 12au7 preamp builds?
  150. non-DSP delay - is it possible?
  151. Stevens & Billington TX102 Passive preamp Built
  152. Loading considerations in Filter design
  153. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  154. Diodes instead of input selector (insane newbie question)?
  155. Experience with anti-parallel electrolytic capacitors?
  156. Best wire for passive pre?
  157. Which Op Amp Supply Bypass Technique for Low Noise?
  158. Add MONO/DIM to DAC/Preamp
  159. Crackling from input cable (even when there is no input)
  160. Best sounding signal level relay?
  161. Mic preamp around transformer
  162. Questions on op amp settling time and quiescent current.
  163. question on crossover board layout
  164. Bugle 2 problem
  165. Rca Passive Summing Box
  166. RC Chain in a 3 Band Baxandall EQ Circuit?
  167. Parallel transformer output
  168. Modding Marantz PM-15S1
  169. Sony TA4300F Crossover
  170. Upgrading a commercial phono stage
  171. New Bonsai Preamp
  172. Help with line input switch
  173. Remember the thermal noise....
  174. Help with passive attenuator for headphone amp
  175. Do amp inputs interact with each other?
  176. 6n11 preamp hum
  177. need help with boombox pre-amp/tone control design
  178. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  179. low pass filter for DAC output
  180. Driving headphone from speaker output - filtering layout
  181. Highpass mic filter
  182. suitable power supply for dozen opamps?
  183. Little sub preamp/phase circuit
  184. RCA Mixer/Combiner
  185. Offset Problem with Borbely JFET-Buffers
  186. op amp class a bias
  187. Effects of Opamp Loading?
  188. Alps RK27 Motorized Pot - Teardown
  189. TDA7439 tone control IC any good?
  190. 100HZ PLLXO
  191. Bourns PTD90 Series Potentiometer
  192. lowest load for line level equipment to not harm the output stage?
  193. Most important opamp?
  194. 5.1 decode in preamp?
  195. Preamp Recommendation For Millett "Engineer's Amplifier"
  196. Tone feedback loop- can you spot the problem?
  197. DIY turnable amplifier aka RIAA - newbie questions!
  198. Great Deal on RCA Interconnects (Canada)
  199. preamp for hlly tamp-90
  200. AD815ARB-24 availability in any online stores? couldnt find
  201. Super Chip Preamp v1.2 (LT1363)
  202. Opinion on differential low pass filter
  203. Active Low Pass
  204. Differential preamplifier
  205. trouble with varimu compressor design
  206. PGA2311 volume control.
  207. Active Crossover frequency response - help needed HH X300
  208. Suggestion For CFA Op-amp
  209. preamp/mixer combo
  210. 12 channel volume control unit?
  211. Documentation on designing preamps
  212. Clean Line Output? OPA627
  213. Active crossover with AD815?
  214. Carlos AD815 pre voltage supply recommendations
  215. Help with Sowter 1990 SUT wiring
  216. Line level rc lowpass clicking
  217. Attenuator for Passive pre amp, best sounding solution
  218. Source for custom-terminated interconnects ?
  219. Onboard JFET Instrument Low-Z Preamp Help?
  220. Why white noise is always present?
  221. How to implement a pop free/low distortion muting circuit?
  222. Suggestions Requested for Mini Buffer Preamp
  223. Mini-Me second edition tube phono preamp
  224. Balanced fixed H attenuator for line level
  225. impedance symptom
  226. How to link two cores with TRS connector?
  227. Turntable earthing woes
  228. tuac weight and tops preamp
  229. Suggestions for single bipolar input op amp?
  230. Pop/click free HW-based relay attenuator
  231. THAT 1646 PCB - help me review please
  232. new line-preamp
  233. Question on Rod Elliott's P088 op-amp based preamp
  234. Pot hum/external speakers
  235. Will this circuit work?
  236. wiring sub to tube stereo
  237. TI on Filter Noise
  238. Compressor design - Sedra/Smith book
  239. ultra low dist pre Sandman distortion null
  240. Grounding question in phono preamp with battery supply
  241. LME49990 in gain buffer - help please
  242. Khozomo MKII Attenuator review
  243. Which MM Phono Amp ?
  244. Transistors in Buffer Circuit Running Too Hot
  245. Building a complete Preamp with an Arduino, remote, volume and input control
  246. MOSFET's Rds in the signal path, when?
  247. Preferences for setting up an EQ
  248. One more volume control
  249. Shedding 2 awful junctions in the signal path
  250. Line level distribution

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