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

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