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  1. New edition D. Self Small Signal Audio Design
  2. Subwoofer preamplifier with low frequency boost below 30Hz?
  3. Spectrum analyser using LM3915
  4. 9V opamp suggestions
  5. Circlotron LINE and RIAA Pre-Amplifiers wanted
  6. JFET choice for transformer coupled mic preamp
  7. understanding source+return current flow on PCBs
  8. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  9. can use la3161 as a simple solution in a car ?
  10. crossover commission/kit
  11. Switch both sides of input connections?
  12. Hammond 140QEX
  13. Current Amplifyer
  14. An Old Nikko power-supply section question
  15. THAT 202XT VCA + ?
  16. Need analog guru help on grounding
  17. iRig Pre Component Upgrade
  18. Calculating a TVC
  19. Balanced Microphone Preamplifier
  20. Electret Condenser Microphone preamp analysis
  21. LF Line Level Stage design to preceed class D amplifier
  22. Mic Preamp w transformer input: changing impedance
  23. Line level / unity gain vacuum tube circuits
  24. Interpret stereophile measurement data
  25. Diy passive pre and switch
  26. slow audio increase at turn on?
  27. Hammond Amplifier Modification Issue
  28. Would like some help with a "Crossover Isolator"
  29. Correct way to split line level inside dual headphone amp
  30. How can this work?
  31. Balanced input
  32. crossover / summer for "2.1" active or passive
  33. Need Advice for Bi-amping
  34. Too much DC at buffer's output
  35. passive pre-amp ?
  36. Salvaged Phono Preamp - Begginner Help
  37. Tape head amplification circuit
  38. Laptop to Guitar Amp cable. . . Resistor values?
  39. Hifi from german studio modules - help wanted
  40. Guard rings for op amps
  41. Tone control for Low bass selector and boost circuit
  42. "Lehmann" Buffer Output Transistors.
  43. Minuature Low Pass Filter
  44. Easy High-Pass Filter
  45. Analog signal control
  46. Buffer Stage
  47. Critique my first drawing / possible build [Active DI]
  48. Low pass filter for Bitstream DAC.
  49. Looking for 0-10V Analog Volume Control Circuit
  50. AVC
  51. looking for programmable eq chip / pcba module ??
  52. Another Modified PGA2311 kit with Arduino for volume control and input selection
  53. Kudies to/for the Tortuga Audio LDR3X.V2
  54. Parasound P/HP 850
  55. LECUA 1000 attenuator from Luxman ?
  56. Line Level Output to Guitar Amplifier Input
  57. is there an off the shelf preamp module that works with the apple remote?
  58. How about this sub crossover filter?
  59. help with 2 pole low pass filter/attenuator
  60. Zobel at the srpp input
  61. Preamp noise after PSU update
  62. Low level interconnect (RCA) measurements
  63. what are the blocks generally found in a pre-amp board?
  64. Carver ct-3 preamp
  65. Advice on a preamp/external volume control for use with active monitors
  66. Audiophile quality preamp
  67. Building a Line Level Mixer, Transformer advice needed
  68. Sowter type 3232
  69. Super tone controls-I need PCB
  70. L-pad attenuator on preamp output
  71. DI output protection from phantom power
  72. Getting Started on Preamp Design
  73. Balanced to unbalanced.
  74. Input device protection
  75. WTB LDR volume control PCB ?
  76. Adding Input Gain +/-
  77. Room correction using a modified Linkwitz Transform Circuit
  78. How to change active xover frecuencies
  79. non inverting opamp with gain
  80. Digital volume control for 7.1 preamp
  81. Current options for a budget active LLXO?
  82. low impedance high-pass filter
  83. AKG Perception 100 mic repair
  84. How do I configure a simple logic control
  85. PCB, Tone Control with Transistors and dual supply
  86. very very simple DJ mixer aka summing amp?
  87. Passive low pass filter for subwoofer
  88. Linn Exotik/S non DA version lock up problem
  89. Shine7 12au7 preamp builds?
  90. non-DSP delay - is it possible?
  91. Stevens & Billington TX102 Passive preamp Built
  92. Loading considerations in Filter design
  93. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  94. Diodes instead of input selector (insane newbie question)?
  95. Experience with anti-parallel electrolytic capacitors?
  96. Best wire for passive pre?
  97. Which Op Amp Supply Bypass Technique for Low Noise?
  98. Add MONO/DIM to DAC/Preamp
  99. Crackling from input cable (even when there is no input)
  100. Best sounding signal level relay?
  101. Mic preamp around transformer
  102. Questions on op amp settling time and quiescent current.
  103. question on crossover board layout
  104. Bugle 2 problem
  105. Rca Passive Summing Box
  106. RC Chain in a 3 Band Baxandall EQ Circuit?
  107. Parallel transformer output
  108. Modding Marantz PM-15S1
  109. Sony TA4300F Crossover
  110. Upgrading a commercial phono stage
  111. New Bonsai Preamp
  112. Help with line input switch
  113. Remember the thermal noise....
  114. Help with passive attenuator for headphone amp
  115. Do amp inputs interact with each other?
  116. 6n11 preamp hum
  117. need help with boombox pre-amp/tone control design
  118. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  119. low pass filter for DAC output
  120. Driving headphone from speaker output - filtering layout
  121. Highpass mic filter
  122. suitable power supply for dozen opamps?
  123. Little sub preamp/phase circuit
  124. RCA Mixer/Combiner
  125. Offset Problem with Borbely JFET-Buffers
  126. op amp class a bias
  127. Effects of Opamp Loading?
  128. Alps RK27 Motorized Pot - Teardown
  129. TDA7439 tone control IC any good?
  130. 100HZ PLLXO
  131. Bourns PTD90 Series Potentiometer
  132. lowest load for line level equipment to not harm the output stage?
  133. Most important opamp?
  134. 5.1 decode in preamp?
  135. Preamp Recommendation For Millett "Engineer's Amplifier"
  136. Tone feedback loop- can you spot the problem?
  137. DIY turnable amplifier aka RIAA - newbie questions!
  138. Great Deal on RCA Interconnects (Canada)
  139. preamp for hlly tamp-90
  140. AD815ARB-24 availability in any online stores? couldnt find
  141. Super Chip Preamp v1.2 (LT1363)
  142. Opinion on differential low pass filter
  143. Active Low Pass
  144. Differential preamplifier
  145. trouble with varimu compressor design
  146. PGA2311 volume control.
  147. Active Crossover frequency response - help needed HH X300
  148. Suggestion For CFA Op-amp
  149. preamp/mixer combo
  150. 12 channel volume control unit?
  151. Documentation on designing preamps
  152. Clean Line Output? OPA627
  153. Active crossover with AD815?
  154. Carlos AD815 pre voltage supply recommendations
  155. Help with Sowter 1990 SUT wiring
  156. Line level rc lowpass clicking
  157. Attenuator for Passive pre amp, best sounding solution
  158. Source for custom-terminated interconnects ?
  159. Onboard JFET Instrument Low-Z Preamp Help?
  160. Why white noise is always present?
  161. How to implement a pop free/low distortion muting circuit?
  162. Suggestions Requested for Mini Buffer Preamp
  163. Mini-Me second edition tube phono preamp
  164. Balanced fixed H attenuator for line level
  165. impedance symptom
  166. How to link two cores with TRS connector?
  167. Turntable earthing woes
  168. tuac weight and tops preamp
  169. Suggestions for single bipolar input op amp?
  170. Pop/click free HW-based relay attenuator
  171. THAT 1646 PCB - help me review please
  172. new line-preamp
  173. Question on Rod Elliott's P088 op-amp based preamp
  174. Pot hum/external speakers
  175. Will this circuit work?
  176. wiring sub to tube stereo
  177. TI on Filter Noise
  178. Compressor design - Sedra/Smith book
  179. ultra low dist pre Sandman distortion null
  180. Grounding question in phono preamp with battery supply
  181. LME49990 in gain buffer - help please
  182. Khozomo MKII Attenuator review
  183. Which MM Phono Amp ?
  184. Transistors in Buffer Circuit Running Too Hot
  185. Building a complete Preamp with an Arduino, remote, volume and input control
  186. MOSFET's Rds in the signal path, when?
  187. Preferences for setting up an EQ
  188. One more volume control
  189. Shedding 2 awful junctions in the signal path
  190. Line level distribution
  191. INA217 gain calculation
  192. Does this circuit have gain?
  193. An interesting JFET-based active XO circuit from TNT Audio
  194. Peak detector reference voltage level
  195. Goldmund Mimesis 27 Preamp clone
  196. AKAI S3200XL unbal to balanced outputs with VT24499
  197. MooseFET preamplifier?
  198. 6ch(12ch) Volume Control for DSP/DAC/BUFFER/POWERAMP
  199. Parametric EQ after pre-amp
  200. TL072 VS NE5532
  201. Grounding question
  202. Need best tone control
  203. How to switch 2 Sources and 2 Amps
  204. Mic Preamp limitor/Automatic level controller
  205. Douglas Self PreAmp 2012
  206. Is this layout OK? Advice please :)
  207. Microphone Preamp balanced voltage levels
  208. PASSIVE PRE-AMPLIFIER BUILDER REQ
  209. active bass boost
  210. SSM2019 single chip preamplifier?
  211. Rane AC23B active crossover
  212. XD3 crossover?
  213. Muting Circuit
  214. Noticeable difference in low freqs between two channels on a Drawmer DL221 compressor
  215. The precise audio signal level control 5.1
  216. Yamaha a-320
  217. Why not Wye?
  218. Help with high DC at output of Forte clone
  219. Humming DRV134 balanced output.
  220. Problem with parametric equalizer
  221. HLLY AMK-II First (and last) Impressions
  222. Salas hotrodded DCB1 resistor tryouts
  223. NE5532 in quad TSSOP package or similar?
  224. Another low distortion buffer
  225. DBX-122 schematic
  226. Audible Illusions L1 background noise
  227. TDA1524A IC Pre-Amp
  228. Please confirm something basic for me
  229. Parasound P/PH-100 hum
  230. Sonographe SC22 schematics
  231. What makes Reference Line Preeminence so good?
  232. push switch pinout
  233. What is 'Good' Common Mode Rejection?
  234. mf x-p100 power supply
  235. Opamp Having Oscillation
  236. Yamaha MSP7 − 22pF between Op Amp inputs? Why?
  237. How to reduce measured noise floor in my DAC/opamp circuit
  238. Switch Types
  239. Simple MOSFET preamp
  240. The Kuartlotron - keantoken's simple error-correction superbuffer
  241. how much gain do i get on this preamp(ad797)?
  242. how to implement line level bsc on a full balanced setup?
  243. 3 channel quad mixer with front to rear pan
  244. Meridian 502 balanced output circuit
  245. kmtech 2 way, active x over, is it elliptical?
  246. Attenuator kit suggestions sought
  247. How do you create a low shelf with passives?
  248. harman opamp advice
  249. Help needed with a transamp mic preamp circuit.
  250. Kleos 2 Way JFET Crossover with EQ

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