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  1. AD815 or THS6012 pros and cons
  2. What is the impedance out of a voltage divider?
  3. Phono Preamp Question...
  4. Analogue Parametric EQ - Calrec Polar...
  5. Sony pcm 7010 - XLR to RCA input
  6. TDA1524A preamp
  7. Wishlist: Op Amp Characterization Curves in Datasheets
  8. Parametric Mid EQ Pot Wiring
  9. Need PS Audio PS IV schematic
  10. Adding Balanced Outputs Psuedo or Real?
  11. Sending an A/V multi channel pre out into another A/V line in?
  12. Copper purity of Cat-5e cable ?
  13. Balance control?
  14. Input/output transformer question
  15. Equalizing the midrange out of a small Radio Shack driver
  16. what ohmage potentiometer for line out volume control?
  17. preamp signal powered down amp
  18. Passive Balanced Attenuator (between Pre & Power)
  19. Best way to add stereo subwoofer pre-outs to existing DAC/preamp?
  20. iPhone Line Out to Car Amp
  21. Is LR4 phase shift audible
  22. line preamp /buffer /module
  23. Please evaluate this RIAA schematic (njm4580)
  24. Praamp crackling
  25. Buffer Jfet
  26. Onkyo SC-901 crossover rebuild(upgrade)
  27. Art Tube MP Help!
  28. How is the sound of the Radford ZD22 preamp compared to modern high-end preamps ?
  29. from stereo to mono (subwoofer) passive adder ?
  30. Newbie Question: Troubleshooting Simple Line Mixer
  31. About preamp circuits improvements
  32. Noob Question: Electros in signal path
  33. Passive or feedback RIAA network tube phono pre?
  34. THAT1606 based line buffer for balanced guitar - Vero design okay?
  35. Attenuating line level signal with buffer vs. resistor...
  36. New Guy Needs Help With Optimus 31-2025 Graphic Equalizer
  37. Preamp: opamp low pass filter for PS noise
  38. I could use some help on a PS Audio Preamp
  39. another opamp based preamp
  40. Comment on Grounding Scheme?
  41. Radio Shack experimenter kits
  42. Crossover for Scan Speak 6000 tweeter.
  43. Neutrik nte 10/3 help
  44. RCA to XLR
  45. BBE XR-5383 chip
  46. Balanced level preamp
  47. cinemag CMLI-15/15B, unbal--> bal
  48. Pin 1: Multiple XLRs between two amplifiers
  49. Connecting Mp3 player
  50. DIY Tone + Volume control
  51. volume control
  52. Linkwitz-Riley Electronic Crossover PCB
  53. Balanced Microphone Preamp
  54. How Much Voltage Do I Need For a Standard Headphone
  55. Yet another passive volume control
  56. Distortion and Source Impedance in JFET Input Op Amps
  57. Analog switches
  58. Yuan Jing 6n3 tube preamp power requirements and options
  59. PGA2310 frequency response
  60. Smoking Preamplifier
  61. Carver C1 preamp
  62. Meridian 201 help
  63. Active speaker- adding amp/xo
  64. basic power supply questions
  65. McIntosh C26 hum after recaping
  66. Old Volvo Tape Deck Line Level to Tape Head
  67. I Need A New Audio Input Indicator
  68. Handy Non Inverting Active Volume Control
  69. Active volume control - Be quiet please.
  70. Complementary MOS Preamp
  71. BUFFER /LINE STAGE/ BEST POSSIBLE SPEC and SOUND
  72. Simple Symmetrical Preamplifier
  73. EMT-240, EMT 262
  74. Looking for that person who can analyze and upgrade.
  75. TKD stereo attenuator 10k
  76. Douglas self four-band baxandall eq
  77. Input Noise Cancelation - LME 49990 - LT1028
  78. Baxandall Variations
  79. HELP! Electret mic - Powering from Focusrite mic preamp with 48v
  80. Output Transformer for INA217 Mic Preamp?
  81. Advise please on EQ restore...
  82. Recommendations for pre/mixer/thing boards or etc.?
  83. Unidirectional Electert Mic and Preamp help.
  84. Rotary stepped attenuator (series) instructions?
  85. High Quality Splitters and Mixers
  86. Which transformations inside this Django?
  87. Balanced stepped attenuator with constant input impedance
  88. 4-ch unbalanced as stereo balanced?
  89. zobel network at driver Fs?
  90. another relay input/volume controller
  91. Basic Inverting Opamp HUM
  92. Recommendations for a simple, opamp-based low-gain stage?
  93. Art Project needs advise, wall of boomboxes
  94. Attenuator design for a modular synth?
  95. Pot values for tone control - from 25k to 10k
  96. Needing Stereo to Mono Summing help...
  97. 2.1 preamp
  98. A little advice, re capping
  99. 8 ohm volume pot
  100. Naim NAC 32.5 Gain board lower gain
  101. P7 Mini Preamp Possible Improvements
  102. Hum issue in hpf circuit
  103. CS3318 Volume Control board with IR?
  104. Balanced line behaviour on Mixer's output
  105. Akitika PR101 Preamp by Dan Joffe
  106. Which one of these wiring schemes will have lower noise?
  107. Need help identifying preamp internals. Conrad Johnson PV-1?
  108. New edition D. Self Small Signal Audio Design
  109. Subwoofer preamplifier with low frequency boost below 30Hz?
  110. Spectrum analyser using LM3915
  111. 9V opamp suggestions
  112. Circlotron LINE and RIAA Pre-Amplifiers wanted
  113. JFET choice for transformer coupled mic preamp
  114. understanding source+return current flow on PCBs
  115. Why are JRC MUSE01 and MUSE02 opamps so expensive?
  116. can use la3161 as a simple solution in a car ?
  117. crossover commission/kit
  118. Switch both sides of input connections?
  119. Hammond 140QEX
  120. Current Amplifyer
  121. An Old Nikko power-supply section question
  122. THAT 202XT VCA + ?
  123. Need analog guru help on grounding
  124. iRig Pre Component Upgrade
  125. Calculating a TVC
  126. Balanced Microphone Preamplifier
  127. Electret Condenser Microphone preamp analysis
  128. LF Line Level Stage design to preceed class D amplifier
  129. Mic Preamp w transformer input: changing impedance
  130. Line level / unity gain vacuum tube circuits
  131. Interpret stereophile measurement data
  132. Diy passive pre and switch
  133. slow audio increase at turn on?
  134. Hammond Amplifier Modification Issue
  135. Would like some help with a "Crossover Isolator"
  136. Correct way to split line level inside dual headphone amp
  137. How can this work?
  138. Balanced input
  139. crossover / summer for "2.1" active or passive
  140. Need Advice for Bi-amping
  141. Too much DC at buffer's output
  142. passive pre-amp ?
  143. Salvaged Phono Preamp - Begginner Help
  144. Tape head amplification circuit
  145. Laptop to Guitar Amp cable. . . Resistor values?
  146. Hifi from german studio modules - help wanted
  147. Guard rings for op amps
  148. Tone control for Low bass selector and boost circuit
  149. "Lehmann" Buffer Output Transistors.
  150. Minuature Low Pass Filter
  151. Easy High-Pass Filter
  152. Analog signal control
  153. Buffer Stage
  154. Critique my first drawing / possible build [Active DI]
  155. Low pass filter for Bitstream DAC.
  156. Looking for 0-10V Analog Volume Control Circuit
  157. AVC
  158. looking for programmable eq chip / pcba module ??
  159. Another Modified PGA2311 kit with Arduino for volume control and input selection
  160. Kudies to/for the Tortuga Audio LDR3X.V2
  161. Parasound P/HP 850
  162. LECUA 1000 attenuator from Luxman ?
  163. Line Level Output to Guitar Amplifier Input
  164. is there an off the shelf preamp module that works with the apple remote?
  165. How about this sub crossover filter?
  166. help with 2 pole low pass filter/attenuator
  167. Zobel at the srpp input
  168. Preamp noise after PSU update
  169. Low level interconnect (RCA) measurements
  170. what are the blocks generally found in a pre-amp board?
  171. Carver ct-3 preamp
  172. Advice on a preamp/external volume control for use with active monitors
  173. Audiophile quality preamp
  174. Building a Line Level Mixer, Transformer advice needed
  175. Sowter type 3232
  176. Super tone controls-I need PCB
  177. L-pad attenuator on preamp output
  178. DI output protection from phantom power
  179. Getting Started on Preamp Design
  180. Balanced to unbalanced.
  181. Input device protection
  182. WTB LDR volume control PCB ?
  183. Adding Input Gain +/-
  184. Room correction using a modified Linkwitz Transform Circuit
  185. How to change active xover frecuencies
  186. non inverting opamp with gain
  187. Digital volume control for 7.1 preamp
  188. Current options for a budget active LLXO?
  189. low impedance high-pass filter
  190. AKG Perception 100 mic repair
  191. How do I configure a simple logic control
  192. PCB, Tone Control with Transistors and dual supply
  193. very very simple DJ mixer aka summing amp?
  194. Passive low pass filter for subwoofer
  195. Linn Exotik/S non DA version lock up problem
  196. Shine7 12au7 preamp builds?
  197. non-DSP delay - is it possible?
  198. Stevens & Billington TX102 Passive preamp Built
  199. Loading considerations in Filter design
  200. TEAD (Tom Evans Audio Design) Groove RIAA MC Phono Preamp - want simplified Schematic
  201. Diodes instead of input selector (insane newbie question)?
  202. Experience with anti-parallel electrolytic capacitors?
  203. Best wire for passive pre?
  204. Which Op Amp Supply Bypass Technique for Low Noise?
  205. Add MONO/DIM to DAC/Preamp
  206. Crackling from input cable (even when there is no input)
  207. Best sounding signal level relay?
  208. Mic preamp around transformer
  209. Questions on op amp settling time and quiescent current.
  210. question on crossover board layout
  211. Bugle 2 problem
  212. Rca Passive Summing Box
  213. RC Chain in a 3 Band Baxandall EQ Circuit?
  214. Parallel transformer output
  215. Modding Marantz PM-15S1
  216. Sony TA4300F Crossover
  217. Upgrading a commercial phono stage
  218. New Bonsai Preamp
  219. Help with line input switch
  220. Remember the thermal noise....
  221. Help with passive attenuator for headphone amp
  222. Do amp inputs interact with each other?
  223. 6n11 preamp hum
  224. need help with boombox pre-amp/tone control design
  225. Muses01 op amp mod for Rotel RSP-1098(+\-18v)?
  226. low pass filter for DAC output
  227. Driving headphone from speaker output - filtering layout
  228. Highpass mic filter
  229. suitable power supply for dozen opamps?
  230. Little sub preamp/phase circuit
  231. RCA Mixer/Combiner
  232. Offset Problem with Borbely JFET-Buffers
  233. op amp class a bias
  234. Effects of Opamp Loading?
  235. Alps RK27 Motorized Pot - Teardown
  236. TDA7439 tone control IC any good?
  237. 100HZ PLLXO
  238. Bourns PTD90 Series Potentiometer
  239. lowest load for line level equipment to not harm the output stage?
  240. Most important opamp?
  241. 5.1 decode in preamp?
  242. Preamp Recommendation For Millett "Engineer's Amplifier"
  243. Tone feedback loop- can you spot the problem?
  244. DIY turnable amplifier aka RIAA - newbie questions!
  245. Great Deal on RCA Interconnects (Canada)
  246. preamp for hlly tamp-90
  247. AD815ARB-24 availability in any online stores? couldnt find
  248. Super Chip Preamp v1.2 (LT1363)
  249. Opinion on differential low pass filter
  250. Active Low Pass

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