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  1. An Old Nikko power-supply section question
  2. THAT 202XT VCA + ?
  3. Need analog guru help on grounding
  4. iRig Pre Component Upgrade
  5. Calculating a TVC
  6. Balanced Microphone Preamplifier
  7. Electret Condenser Microphone preamp analysis
  8. LF Line Level Stage design to preceed class D amplifier
  9. Mic Preamp w transformer input: changing impedance
  10. Line level / unity gain vacuum tube circuits
  11. Interpret stereophile measurement data
  12. Diy passive pre and switch
  13. slow audio increase at turn on?
  14. Hammond Amplifier Modification Issue
  15. Would like some help with a "Crossover Isolator"
  16. Correct way to split line level inside dual headphone amp
  17. How can this work?
  18. Balanced input
  19. crossover / summer for "2.1" active or passive
  20. Need Advice for Bi-amping
  21. Too much DC at buffer's output
  22. passive pre-amp ?
  23. Salvaged Phono Preamp - Begginner Help
  24. Tape head amplification circuit
  25. Laptop to Guitar Amp cable. . . Resistor values?
  26. Hifi from german studio modules - help wanted
  27. Guard rings for op amps
  28. Tone control for Low bass selector and boost circuit
  29. "Lehmann" Buffer Output Transistors.
  30. Minuature Low Pass Filter
  31. Easy High-Pass Filter
  32. Analog signal control
  33. Buffer Stage
  34. Critique my first drawing / possible build [Active DI]
  35. Low pass filter for Bitstream DAC.
  36. Looking for 0-10V Analog Volume Control Circuit
  37. AVC
  38. looking for programmable eq chip / pcba module ??
  39. Another Modified PGA2311 kit with Arduino for volume control and input selection
  40. Kudies to/for the Tortuga Audio LDR3X.V2
  41. Parasound P/HP 850
  42. LECUA 1000 attenuator from Luxman ?
  43. Line Level Output to Guitar Amplifier Input
  44. is there an off the shelf preamp module that works with the apple remote?
  45. How about this sub crossover filter?
  46. help with 2 pole low pass filter/attenuator
  47. Zobel at the srpp input
  48. Preamp noise after PSU update
  49. Low level interconnect (RCA) measurements
  50. what are the blocks generally found in a pre-amp board?
  51. Carver ct-3 preamp
  52. Advice on a preamp/external volume control for use with active monitors
  53. Audiophile quality preamp
  54. Building a Line Level Mixer, Transformer advice needed
  55. Sowter type 3232
  56. Super tone controls-I need PCB
  57. L-pad attenuator on preamp output
  58. DI output protection from phantom power
  59. Getting Started on Preamp Design
  60. Balanced to unbalanced.
  61. Input device protection
  62. WTB LDR volume control PCB ?
  63. Adding Input Gain +/-
  64. Room correction using a modified Linkwitz Transform Circuit
  65. How to change active xover frecuencies
  66. non inverting opamp with gain
  67. Digital volume control for 7.1 preamp
  68. Current options for a budget active LLXO?
  69. low impedance high-pass filter
  70. AKG Perception 100 mic repair
  71. How do I configure a simple logic control
  72. PCB, Tone Control with Transistors and dual supply
  73. very very simple DJ mixer aka summing amp?
  74. Passive low pass filter for subwoofer
  75. Linn Exotik/S non DA version lock up problem
  76. Shine7 12au7 preamp builds?
  77. non-DSP delay - is it possible?
  78. Stevens & Billington TX102 Passive preamp Built
  79. Loading considerations in Filter design
  80. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  81. Diodes instead of input selector (insane newbie question)?
  82. Experience with anti-parallel electrolytic capacitors?
  83. Best wire for passive pre?
  84. Which Op Amp Supply Bypass Technique for Low Noise?
  85. Add MONO/DIM to DAC/Preamp
  86. Crackling from input cable (even when there is no input)
  87. Best sounding signal level relay?
  88. Mic preamp around transformer
  89. Questions on op amp settling time and quiescent current.
  90. question on crossover board layout
  91. Bugle 2 problem
  92. Rca Passive Summing Box
  93. RC Chain in a 3 Band Baxandall EQ Circuit?
  94. Parallel transformer output
  95. Modding Marantz PM-15S1
  96. Sony TA4300F Crossover
  97. Upgrading a commercial phono stage
  98. New Bonsai Preamp
  99. Help with line input switch
  100. Remember the thermal noise....
  101. Help with passive attenuator for headphone amp
  102. Do amp inputs interact with each other?
  103. 6n11 preamp hum
  104. need help with boombox pre-amp/tone control design
  105. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  106. low pass filter for DAC output
  107. Driving headphone from speaker output - filtering layout
  108. Highpass mic filter
  109. suitable power supply for dozen opamps?
  110. Little sub preamp/phase circuit
  111. RCA Mixer/Combiner
  112. Offset Problem with Borbely JFET-Buffers
  113. op amp class a bias
  114. Effects of Opamp Loading?
  115. Alps RK27 Motorized Pot - Teardown
  116. TDA7439 tone control IC any good?
  117. 100HZ PLLXO
  118. Bourns PTD90 Series Potentiometer
  119. lowest load for line level equipment to not harm the output stage?
  120. Most important opamp?
  121. 5.1 decode in preamp?
  122. Preamp Recommendation For Millett "Engineer's Amplifier"
  123. Tone feedback loop- can you spot the problem?
  124. DIY turnable amplifier aka RIAA - newbie questions!
  125. Great Deal on RCA Interconnects (Canada)
  126. preamp for hlly tamp-90
  127. AD815ARB-24 availability in any online stores? couldnt find
  128. Super Chip Preamp v1.2 (LT1363)
  129. Opinion on differential low pass filter
  130. Active Low Pass
  131. Differential preamplifier
  132. trouble with varimu compressor design
  133. PGA2311 volume control.
  134. Active Crossover frequency response - help needed HH X300
  135. Suggestion For CFA Op-amp
  136. preamp/mixer combo
  137. 12 channel volume control unit?
  138. Documentation on designing preamps
  139. Clean Line Output? OPA627
  140. Active crossover with AD815?
  141. Carlos AD815 pre voltage supply recommendations
  142. Help with Sowter 1990 SUT wiring
  143. Line level rc lowpass clicking
  144. Attenuator for Passive pre amp, best sounding solution
  145. Source for custom-terminated interconnects ?
  146. Onboard JFET Instrument Low-Z Preamp Help?
  147. Why white noise is always present?
  148. How to implement a pop free/low distortion muting circuit?
  149. Suggestions Requested for Mini Buffer Preamp
  150. Mini-Me second edition tube phono preamp
  151. Balanced fixed H attenuator for line level
  152. impedance symptom
  153. How to link two cores with TRS connector?
  154. Turntable earthing woes
  155. tuac weight and tops preamp
  156. Suggestions for single bipolar input op amp?
  157. Pop/click free HW-based relay attenuator
  158. THAT 1646 PCB - help me review please
  159. new line-preamp
  160. Question on Rod Elliott's P088 op-amp based preamp
  161. Pot hum/external speakers
  162. Will this circuit work?
  163. wiring sub to tube stereo
  164. TI on Filter Noise
  165. Compressor design - Sedra/Smith book
  166. ultra low dist pre Sandman distortion null
  167. Grounding question in phono preamp with battery supply
  168. LME49990 in gain buffer - help please
  169. Khozomo MKII Attenuator review
  170. Which MM Phono Amp ?
  171. Transistors in Buffer Circuit Running Too Hot
  172. Building a complete Preamp with an Arduino, remote, volume and input control
  173. MOSFET's Rds in the signal path, when?
  174. Preferences for setting up an EQ
  175. One more volume control
  176. Shedding 2 awful junctions in the signal path
  177. Line level distribution
  178. INA217 gain calculation
  179. Does this circuit have gain?
  180. An interesting JFET-based active XO circuit from TNT Audio
  181. Peak detector reference voltage level
  182. Goldmund Mimesis 27 Preamp clone
  183. AKAI S3200XL unbal to balanced outputs with VT24499
  184. MooseFET preamplifier?
  185. 6ch(12ch) Volume Control for DSP/DAC/BUFFER/POWERAMP
  186. Parametric EQ after pre-amp
  187. TL072 VS NE5532
  188. Grounding question
  189. Need best tone control
  190. How to switch 2 Sources and 2 Amps
  191. Mic Preamp limitor/Automatic level controller
  192. Douglas Self PreAmp 2012
  193. Is this layout OK? Advice please :)
  194. Microphone Preamp balanced voltage levels
  195. PASSIVE PRE-AMPLIFIER BUILDER REQ
  196. active bass boost
  197. SSM2019 single chip preamplifier?
  198. Rane AC23B active crossover
  199. XD3 crossover?
  200. Muting Circuit
  201. Noticeable difference in low freqs between two channels on a Drawmer DL221 compressor
  202. The precise audio signal level control 5.1
  203. Yamaha a-320
  204. Why not Wye?
  205. Help with high DC at output of Forte clone
  206. Humming DRV134 balanced output.
  207. Problem with parametric equalizer
  208. HLLY AMK-II First (and last) Impressions
  209. Salas hotrodded DCB1 resistor tryouts
  210. NE5532 in quad TSSOP package or similar?
  211. Another low distortion buffer
  212. DBX-122 schematic
  213. Audible Illusions L1 background noise
  214. TDA1524A IC Pre-Amp
  215. Please confirm something basic for me
  216. Parasound P/PH-100 hum
  217. Sonographe SC22 schematics
  218. What makes Reference Line Preeminence so good?
  219. push switch pinout
  220. What is 'Good' Common Mode Rejection?
  221. mf x-p100 power supply
  222. Opamp Having Oscillation
  223. Yamaha MSP7 − 22pF between Op Amp inputs? Why?
  224. How to reduce measured noise floor in my DAC/opamp circuit
  225. Switch Types
  226. Simple MOSFET preamp
  227. The Kuartlotron - keantoken's simple error-correction superbuffer
  228. how much gain do i get on this preamp(ad797)?
  229. how to implement line level bsc on a full balanced setup?
  230. 3 channel quad mixer with front to rear pan
  231. Meridian 502 balanced output circuit
  232. kmtech 2 way, active x over, is it elliptical?
  233. Attenuator kit suggestions sought
  234. How do you create a low shelf with passives?
  235. harman opamp advice
  236. Help needed with a transamp mic preamp circuit.
  237. Kleos 2 Way JFET Crossover with EQ
  238. see this preamp circuit diagram
  239. pre-amp tune up
  240. Preamplifier with aux and mic inputs
  241. Schematic wanted for portable SONY Monaural Receiver ICF-6000L
  242. Need a high quality SS mic preamp kit
  243. Marantz 2270 Preamp
  244. Source selector without mechanical switch
  245. Imaging skewed to the left
  246. THD calc from spectrum analyzer help
  247. A question regarding "loudness"
  248. Did I put these back in the correct spots?
  249. Lookin for nice simple XLR out preamp?
  250. Boz preamp and PLLXO

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