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  1. Too much DC at buffer's output
  2. passive pre-amp ?
  3. Salvaged Phono Preamp - Begginner Help
  4. Tape head amplification circuit
  5. Laptop to Guitar Amp cable. . . Resistor values?
  6. Hifi from german studio modules - help wanted
  7. Guard rings for op amps
  8. Tone control for Low bass selector and boost circuit
  9. "Lehmann" Buffer Output Transistors.
  10. Minuature Low Pass Filter
  11. Easy High-Pass Filter
  12. Analog signal control
  13. Buffer Stage
  14. Critique my first drawing / possible build [Active DI]
  15. Low pass filter for Bitstream DAC.
  16. Looking for 0-10V Analog Volume Control Circuit
  17. AVC
  18. looking for programmable eq chip / pcba module ??
  19. Another Modified PGA2311 kit with Arduino for volume control and input selection
  20. Kudies to/for the Tortuga Audio LDR3X.V2
  21. Parasound P/HP 850
  22. LECUA 1000 attenuator from Luxman ?
  23. Line Level Output to Guitar Amplifier Input
  24. is there an off the shelf preamp module that works with the apple remote?
  25. How about this sub crossover filter?
  26. help with 2 pole low pass filter/attenuator
  27. Zobel at the srpp input
  28. Preamp noise after PSU update
  29. Low level interconnect (RCA) measurements
  30. what are the blocks generally found in a pre-amp board?
  31. Carver ct-3 preamp
  32. Advice on a preamp/external volume control for use with active monitors
  33. Audiophile quality preamp
  34. Building a Line Level Mixer, Transformer advice needed
  35. Sowter type 3232
  36. Super tone controls-I need PCB
  37. L-pad attenuator on preamp output
  38. DI output protection from phantom power
  39. Getting Started on Preamp Design
  40. Balanced to unbalanced.
  41. Input device protection
  42. WTB LDR volume control PCB ?
  43. Adding Input Gain +/-
  44. Room correction using a modified Linkwitz Transform Circuit
  45. How to change active xover frecuencies
  46. non inverting opamp with gain
  47. Digital volume control for 7.1 preamp
  48. Current options for a budget active LLXO?
  49. low impedance high-pass filter
  50. AKG Perception 100 mic repair
  51. How do I configure a simple logic control
  52. PCB, Tone Control with Transistors and dual supply
  53. very very simple DJ mixer aka summing amp?
  54. Passive low pass filter for subwoofer
  55. Linn Exotik/S non DA version lock up problem
  56. Shine7 12au7 preamp builds?
  57. non-DSP delay - is it possible?
  58. Stevens & Billington TX102 Passive preamp Built
  59. Loading considerations in Filter design
  60. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  61. Diodes instead of input selector (insane newbie question)?
  62. Experience with anti-parallel electrolytic capacitors?
  63. Best wire for passive pre?
  64. Which Op Amp Supply Bypass Technique for Low Noise?
  65. Add MONO/DIM to DAC/Preamp
  66. Crackling from input cable (even when there is no input)
  67. Best sounding signal level relay?
  68. Mic preamp around transformer
  69. Questions on op amp settling time and quiescent current.
  70. question on crossover board layout
  71. Bugle 2 problem
  72. Rca Passive Summing Box
  73. RC Chain in a 3 Band Baxandall EQ Circuit?
  74. Parallel transformer output
  75. Modding Marantz PM-15S1
  76. Sony TA4300F Crossover
  77. Upgrading a commercial phono stage
  78. New Bonsai Preamp
  79. Help with line input switch
  80. Remember the thermal noise....
  81. Help with passive attenuator for headphone amp
  82. Do amp inputs interact with each other?
  83. 6n11 preamp hum
  84. need help with boombox pre-amp/tone control design
  85. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  86. low pass filter for DAC output
  87. Driving headphone from speaker output - filtering layout
  88. Highpass mic filter
  89. suitable power supply for dozen opamps?
  90. Little sub preamp/phase circuit
  91. RCA Mixer/Combiner
  92. Offset Problem with Borbely JFET-Buffers
  93. op amp class a bias
  94. Effects of Opamp Loading?
  95. Alps RK27 Motorized Pot - Teardown
  96. TDA7439 tone control IC any good?
  97. 100HZ PLLXO
  98. Bourns PTD90 Series Potentiometer
  99. lowest load for line level equipment to not harm the output stage?
  100. Most important opamp?
  101. 5.1 decode in preamp?
  102. Preamp Recommendation For Millett "Engineer's Amplifier"
  103. Tone feedback loop- can you spot the problem?
  104. DIY turnable amplifier aka RIAA - newbie questions!
  105. Great Deal on RCA Interconnects (Canada)
  106. preamp for hlly tamp-90
  107. AD815ARB-24 availability in any online stores? couldnt find
  108. Super Chip Preamp v1.2 (LT1363)
  109. Opinion on differential low pass filter
  110. Active Low Pass
  111. Differential preamplifier
  112. trouble with varimu compressor design
  113. PGA2311 volume control.
  114. Active Crossover frequency response - help needed HH X300
  115. Suggestion For CFA Op-amp
  116. preamp/mixer combo
  117. 12 channel volume control unit?
  118. Documentation on designing preamps
  119. Clean Line Output? OPA627
  120. Active crossover with AD815?
  121. Carlos AD815 pre voltage supply recommendations
  122. Help with Sowter 1990 SUT wiring
  123. Line level rc lowpass clicking
  124. Attenuator for Passive pre amp, best sounding solution
  125. Source for custom-terminated interconnects ?
  126. Onboard JFET Instrument Low-Z Preamp Help?
  127. Why white noise is always present?
  128. How to implement a pop free/low distortion muting circuit?
  129. Suggestions Requested for Mini Buffer Preamp
  130. Mini-Me second edition tube phono preamp
  131. Balanced fixed H attenuator for line level
  132. impedance symptom
  133. How to link two cores with TRS connector?
  134. Turntable earthing woes
  135. tuac weight and tops preamp
  136. Suggestions for single bipolar input op amp?
  137. Pop/click free HW-based relay attenuator
  138. THAT 1646 PCB - help me review please
  139. new line-preamp
  140. Question on Rod Elliott's P088 op-amp based preamp
  141. Pot hum/external speakers
  142. Will this circuit work?
  143. wiring sub to tube stereo
  144. TI on Filter Noise
  145. Compressor design - Sedra/Smith book
  146. ultra low dist pre Sandman distortion null
  147. Grounding question in phono preamp with battery supply
  148. LME49990 in gain buffer - help please
  149. Khozomo MKII Attenuator review
  150. Which MM Phono Amp ?
  151. Transistors in Buffer Circuit Running Too Hot
  152. Building a complete Preamp with an Arduino, remote, volume and input control
  153. MOSFET's Rds in the signal path, when?
  154. Preferences for setting up an EQ
  155. One more volume control
  156. Shedding 2 awful junctions in the signal path
  157. Line level distribution
  158. INA217 gain calculation
  159. Does this circuit have gain?
  160. An interesting JFET-based active XO circuit from TNT Audio
  161. Peak detector reference voltage level
  162. Goldmund Mimesis 27 Preamp clone
  163. AKAI S3200XL unbal to balanced outputs with VT24499
  164. MooseFET preamplifier?
  165. 6ch(12ch) Volume Control for DSP/DAC/BUFFER/POWERAMP
  166. Parametric EQ after pre-amp
  167. TL072 VS NE5532
  168. Grounding question
  169. Need best tone control
  170. How to switch 2 Sources and 2 Amps
  171. Mic Preamp limitor/Automatic level controller
  172. Douglas Self PreAmp 2012
  173. Is this layout OK? Advice please :)
  174. Microphone Preamp balanced voltage levels
  175. PASSIVE PRE-AMPLIFIER BUILDER REQ
  176. active bass boost
  177. SSM2019 single chip preamplifier?
  178. Rane AC23B active crossover
  179. XD3 crossover?
  180. Muting Circuit
  181. Noticeable difference in low freqs between two channels on a Drawmer DL221 compressor
  182. The precise audio signal level control 5.1
  183. Yamaha a-320
  184. Why not Wye?
  185. Help with high DC at output of Forte clone
  186. Humming DRV134 balanced output.
  187. Problem with parametric equalizer
  188. HLLY AMK-II First (and last) Impressions
  189. Salas hotrodded DCB1 resistor tryouts
  190. NE5532 in quad TSSOP package or similar?
  191. Another low distortion buffer
  192. DBX-122 schematic
  193. Audible Illusions L1 background noise
  194. TDA1524A IC Pre-Amp
  195. Please confirm something basic for me
  196. Parasound P/PH-100 hum
  197. Sonographe SC22 schematics
  198. What makes Reference Line Preeminence so good?
  199. push switch pinout
  200. What is 'Good' Common Mode Rejection?
  201. mf x-p100 power supply
  202. Opamp Having Oscillation
  203. Yamaha MSP7 − 22pF between Op Amp inputs? Why?
  204. How to reduce measured noise floor in my DAC/opamp circuit
  205. Switch Types
  206. Simple MOSFET preamp
  207. The Kuartlotron - keantoken's simple error-correction superbuffer
  208. how much gain do i get on this preamp(ad797)?
  209. how to implement line level bsc on a full balanced setup?
  210. 3 channel quad mixer with front to rear pan
  211. Meridian 502 balanced output circuit
  212. kmtech 2 way, active x over, is it elliptical?
  213. Attenuator kit suggestions sought
  214. How do you create a low shelf with passives?
  215. harman opamp advice
  216. Help needed with a transamp mic preamp circuit.
  217. Kleos 2 Way JFET Crossover with EQ
  218. see this preamp circuit diagram
  219. pre-amp tune up
  220. Preamplifier with aux and mic inputs
  221. Schematic wanted for portable SONY Monaural Receiver ICF-6000L
  222. Need a high quality SS mic preamp kit
  223. Marantz 2270 Preamp
  224. Source selector without mechanical switch
  225. Imaging skewed to the left
  226. THD calc from spectrum analyzer help
  227. A question regarding "loudness"
  228. Did I put these back in the correct spots?
  229. Lookin for nice simple XLR out preamp?
  230. Boz preamp and PLLXO
  231. Sound City studios/Neve etc Documentary
  232. Adding a tube preamp to a solid state combo amp
  233. BAT VK-32SE
  234. The Heavy Cross - ideas about a transconductance phase-splitting amp
  235. Tip on high amplification, low distortion, single-ended, no feedback circuitry?
  236. PC900 tube as a preamp...pictures
  237. Input transformer for summing amp
  238. Stereo to mono summing, which end to sum?
  239. Bass distortion when using digital pot
  240. need help with mute circuit for preamp
  241. JC2 v1.6 preamplifier build
  242. 3-pin balanced XLR - gender conventions
  243. help getting to 47kohm impedance
  244. Volume Control and Sound Quality
  245. Solid State Phono Stage
  246. Balanced ladder attenuator, make before brake question
  247. Standard spacing for XLR connectors
  248. Basic Pre-Amp Kit
  249. Single to differential into amp - transformer or dual opamp
  250. JFET follower Baffle Step Possible? Bass Boost?

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