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

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