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  1. DI output protection from phantom power
  2. Getting Started on Preamp Design
  3. Balanced to unbalanced.
  4. Input device protection
  5. WTB LDR volume control PCB ?
  6. Adding Input Gain +/-
  7. Room correction using a modified Linkwitz Transform Circuit
  8. How to change active xover frecuencies
  9. non inverting opamp with gain
  10. Digital volume control for 7.1 preamp
  11. Current options for a budget active LLXO?
  12. low impedance high-pass filter
  13. AKG Perception 100 mic repair
  14. How do I configure a simple logic control
  15. PCB, Tone Control with Transistors and dual supply
  16. very very simple DJ mixer aka summing amp?
  17. Passive low pass filter for subwoofer
  18. Linn Exotik/S non DA version lock up problem
  19. Shine7 12au7 preamp builds?
  20. non-DSP delay - is it possible?
  21. Stevens & Billington TX102 Passive preamp Built
  22. Loading considerations in Filter design
  23. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  24. Diodes instead of input selector (insane newbie question)?
  25. Experience with anti-parallel electrolytic capacitors?
  26. Best wire for passive pre?
  27. Which Op Amp Supply Bypass Technique for Low Noise?
  28. Add MONO/DIM to DAC/Preamp
  29. Crackling from input cable (even when there is no input)
  30. Best sounding signal level relay?
  31. Mic preamp around transformer
  32. Questions on op amp settling time and quiescent current.
  33. question on crossover board layout
  34. Bugle 2 problem
  35. Rca Passive Summing Box
  36. RC Chain in a 3 Band Baxandall EQ Circuit?
  37. Parallel transformer output
  38. Modding Marantz PM-15S1
  39. Sony TA4300F Crossover
  40. Upgrading a commercial phono stage
  41. New Bonsai Preamp
  42. Help with line input switch
  43. Remember the thermal noise....
  44. Help with passive attenuator for headphone amp
  45. Do amp inputs interact with each other?
  46. 6n11 preamp hum
  47. need help with boombox pre-amp/tone control design
  48. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  49. low pass filter for DAC output
  50. Driving headphone from speaker output - filtering layout
  51. Highpass mic filter
  52. suitable power supply for dozen opamps?
  53. Little sub preamp/phase circuit
  54. RCA Mixer/Combiner
  55. Offset Problem with Borbely JFET-Buffers
  56. op amp class a bias
  57. Effects of Opamp Loading?
  58. Alps RK27 Motorized Pot - Teardown
  59. TDA7439 tone control IC any good?
  60. 100HZ PLLXO
  61. Bourns PTD90 Series Potentiometer
  62. lowest load for line level equipment to not harm the output stage?
  63. Most important opamp?
  64. 5.1 decode in preamp?
  65. Preamp Recommendation For Millett "Engineer's Amplifier"
  66. Tone feedback loop- can you spot the problem?
  67. DIY turnable amplifier aka RIAA - newbie questions!
  68. Great Deal on RCA Interconnects (Canada)
  69. preamp for hlly tamp-90
  70. AD815ARB-24 availability in any online stores? couldnt find
  71. Super Chip Preamp v1.2 (LT1363)
  72. Opinion on differential low pass filter
  73. Active Low Pass
  74. Differential preamplifier
  75. trouble with varimu compressor design
  76. PGA2311 volume control.
  77. Active Crossover frequency response - help needed HH X300
  78. Suggestion For CFA Op-amp
  79. preamp/mixer combo
  80. 12 channel volume control unit?
  81. Documentation on designing preamps
  82. Clean Line Output? OPA627
  83. Active crossover with AD815?
  84. Carlos AD815 pre voltage supply recommendations
  85. Help with Sowter 1990 SUT wiring
  86. Line level rc lowpass clicking
  87. Attenuator for Passive pre amp, best sounding solution
  88. Source for custom-terminated interconnects ?
  89. Onboard JFET Instrument Low-Z Preamp Help?
  90. Why white noise is always present?
  91. How to implement a pop free/low distortion muting circuit?
  92. Suggestions Requested for Mini Buffer Preamp
  93. Mini-Me second edition tube phono preamp
  94. Balanced fixed H attenuator for line level
  95. impedance symptom
  96. How to link two cores with TRS connector?
  97. Turntable earthing woes
  98. tuac weight and tops preamp
  99. Suggestions for single bipolar input op amp?
  100. Pop/click free HW-based relay attenuator
  101. THAT 1646 PCB - help me review please
  102. new line-preamp
  103. Question on Rod Elliott's P088 op-amp based preamp
  104. Pot hum/external speakers
  105. Will this circuit work?
  106. wiring sub to tube stereo
  107. TI on Filter Noise
  108. Compressor design - Sedra/Smith book
  109. ultra low dist pre Sandman distortion null
  110. Grounding question in phono preamp with battery supply
  111. LME49990 in gain buffer - help please
  112. Khozomo MKII Attenuator review
  113. Which MM Phono Amp ?
  114. Transistors in Buffer Circuit Running Too Hot
  115. Building a complete Preamp with an Arduino, remote, volume and input control
  116. MOSFET's Rds in the signal path, when?
  117. Preferences for setting up an EQ
  118. One more volume control
  119. Shedding 2 awful junctions in the signal path
  120. Line level distribution
  121. INA217 gain calculation
  122. Does this circuit have gain?
  123. An interesting JFET-based active XO circuit from TNT Audio
  124. Peak detector reference voltage level
  125. Goldmund Mimesis 27 Preamp clone
  126. AKAI S3200XL unbal to balanced outputs with VT24499
  127. MooseFET preamplifier?
  128. 6ch(12ch) Volume Control for DSP/DAC/BUFFER/POWERAMP
  129. Parametric EQ after pre-amp
  130. TL072 VS NE5532
  131. Grounding question
  132. Need best tone control
  133. How to switch 2 Sources and 2 Amps
  134. Mic Preamp limitor/Automatic level controller
  135. Douglas Self PreAmp 2012
  136. Is this layout OK? Advice please :)
  137. Microphone Preamp balanced voltage levels
  138. PASSIVE PRE-AMPLIFIER BUILDER REQ
  139. active bass boost
  140. SSM2019 single chip preamplifier?
  141. Rane AC23B active crossover
  142. XD3 crossover?
  143. Muting Circuit
  144. Noticeable difference in low freqs between two channels on a Drawmer DL221 compressor
  145. The precise audio signal level control 5.1
  146. Yamaha a-320
  147. Why not Wye?
  148. Help with high DC at output of Forte clone
  149. Humming DRV134 balanced output.
  150. Problem with parametric equalizer
  151. HLLY AMK-II First (and last) Impressions
  152. Salas hotrodded DCB1 resistor tryouts
  153. NE5532 in quad TSSOP package or similar?
  154. Another low distortion buffer
  155. DBX-122 schematic
  156. Audible Illusions L1 background noise
  157. TDA1524A IC Pre-Amp
  158. Please confirm something basic for me
  159. Parasound P/PH-100 hum
  160. Sonographe SC22 schematics
  161. What makes Reference Line Preeminence so good?
  162. push switch pinout
  163. What is 'Good' Common Mode Rejection?
  164. mf x-p100 power supply
  165. Opamp Having Oscillation
  166. Yamaha MSP7 − 22pF between Op Amp inputs? Why?
  167. How to reduce measured noise floor in my DAC/opamp circuit
  168. Switch Types
  169. Simple MOSFET preamp
  170. The Kuartlotron - keantoken's simple error-correction superbuffer
  171. how much gain do i get on this preamp(ad797)?
  172. how to implement line level bsc on a full balanced setup?
  173. 3 channel quad mixer with front to rear pan
  174. Meridian 502 balanced output circuit
  175. kmtech 2 way, active x over, is it elliptical?
  176. Attenuator kit suggestions sought
  177. How do you create a low shelf with passives?
  178. harman opamp advice
  179. Help needed with a transamp mic preamp circuit.
  180. Kleos 2 Way JFET Crossover with EQ
  181. see this preamp circuit diagram
  182. pre-amp tune up
  183. Preamplifier with aux and mic inputs
  184. Schematic wanted for portable SONY Monaural Receiver ICF-6000L
  185. Need a high quality SS mic preamp kit
  186. Marantz 2270 Preamp
  187. Source selector without mechanical switch
  188. Imaging skewed to the left
  189. THD calc from spectrum analyzer help
  190. A question regarding "loudness"
  191. Did I put these back in the correct spots?
  192. Lookin for nice simple XLR out preamp?
  193. Boz preamp and PLLXO
  194. Sound City studios/Neve etc Documentary
  195. Adding a tube preamp to a solid state combo amp
  196. BAT VK-32SE
  197. The Heavy Cross - ideas about a transconductance phase-splitting amp
  198. Tip on high amplification, low distortion, single-ended, no feedback circuitry?
  199. PC900 tube as a preamp...pictures
  200. Input transformer for summing amp
  201. Stereo to mono summing, which end to sum?
  202. Bass distortion when using digital pot
  203. need help with mute circuit for preamp
  204. JC2 v1.6 preamplifier build
  205. 3-pin balanced XLR - gender conventions
  206. help getting to 47kohm impedance
  207. Volume Control and Sound Quality
  208. Solid State Phono Stage
  209. Balanced ladder attenuator, make before brake question
  210. Standard spacing for XLR connectors
  211. Basic Pre-Amp Kit
  212. Single to differential into amp - transformer or dual opamp
  213. JFET follower Baffle Step Possible? Bass Boost?
  214. Op amps for active Xover and line drivers
  215. crossover buffer question
  216. Balanced LDR attenuator
  217. I'd like to add an Analog In and Out Section to an Elite 62FD Player
  218. Advice needed: mixed order Linkwitz Riley crossover
  219. Best-Sounding RC Attenuator & Source Selection System
  220. Ultra Low Noise - Ultra Low Impedance - Ultra big Problems!
  221. Anyone Ever Heard of a Soho Quatro Preamp?
  222. Help please: need wiring schema for S&B TX-102 TVC
  223. mp3 --> ? Input Transformer ? --> class d
  224. Aikido Octal All in One transformer help
  225. Designing a noob-preamp (single supply)
  226. RIAA Pacific rookie attempt
  227. This may be a silly question...
  228. 1st pre amp build, 1/2 way anyways
  229. Stereo to mono
  230. Tone control schematic with surround sound (?)
  231. Linkwitz Transform Arrangement to optimize subwoofer response
  232. Need help....................
  233. to switch or not?
  234. line transformer matching impedance Icepower 50ASX2
  235. Hot Rodding the Musical Fidelity X-Pre
  236. Any experience with Elliott Sound VCA Pre-Amp
  237. Humm noise on pre McIntosh MX136
  238. Stupid Q ... what determines "signal ground" on a unity gain buffer?
  239. carver C-2 pre hum?
  240. LME49720 preamp for F5
  241. Audio Research LS-1 Schematic & Parts List?
  242. Help for MUSES 72320 DIY kit
  243. Middle Controls
  244. Dual Regulated Bugle Phono Preamp?
  245. How to run line level output to ground
  246. SSM2019BNZ for 'gainy' pre-amp?
  247. DBX Active Crossover
  248. Luxman C1000 preamp starts clicking on and off rapidly after 20 min
  249. Stereo + LFE (2.1)?
  250. Cat5 Audio Line Noise

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