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  1. What is a good 1st order Good Band pass?
  2. Preamp: Comparing LDR and buffered LDR
  3. BTL to Balanced Conversion
  4. REGA CURSA CIRCUIT
  5. Questios about designing with opamps
  6. Preamp from Velodyne HGS line
  7. Using PGA23XX with dac with dc offset
  8. Instrumentation Amp: Input Resistors?
  9. Mic pre amp Problem
  10. please help me
  11. Output transformer in reverse to drive a piezo disk
  12. add a volume control to a dac with dc offset
  13. How to switch phantom power?
  14. zoe tsang simple opamp preamp/buffer kit on ebay
  15. Impedance of parallel transformers
  16. External tunable X-Over
  17. sound of discrete opamps
  18. Big Dumb Input Selector
  19. DIY Line preamp sugestions, 10meter cables
  20. which tube preamp kit for newbie
  21. EQ Circuit before or after crossover circuit ??
  22. Schematic needed panasonic RX-1230 schematic
  23. Passive 16 channel summing mixer
  24. schematic needed: 3 band equaliser + gain stage
  25. Quick question on pots for guitar pre
  26. Counterpoint SA5 Phono Channel Out... Help!
  27. Help with Op Amp outamp
  28. Discrete dual-opamp DIP08 module (jcx topology)
  29. Preamp disappointment and passive mod???
  30. Need help with volume control
  31. Solid State Pre Amp with Tube Amp - Pointless?
  32. Touch-sense/remote active/passive preamp
  33. Summing Mixer and Headphone amp...
  34. Linkwitz-Riley low pass, strange distortion?
  35. Cauer / Elliptic Filter design program
  36. do I need vintage preamp?
  37. Optical Attenuator on the Cheap
  38. CDP output enough for line-level active crossover?
  39. Replacing Samson S 3-way Xover Op amps
  40. Any Semi Manufacturers Better Than Others?
  41. Help me to Build Tube Preamp with Phono
  42. Need audio input indicator
  43. Where do I put the subwoofer volume control potentiometer?
  44. XLR to RCA I/O with Aleph Pre, Acurs Amp, X-OVR and Nak Dragon
  45. microphone echo & delay fx circuit
  46. 3 band eq using jfet transistors
  47. compenstation cap for 2nd order allpass delay circuit
  48. Recommend a DIY pre-amp for use with Hypex UCD modules
  49. Just passing my PLXXO and trafo design by the experts :)
  50. Line stage cap recommendations
  51. AGC automatic gain controler
  52. High quality capacitors for crossovers?
  53. Organizing Components for Low Noise?
  54. fender tmb circuit
  55. 3 band eq
  56. Is This Preamp Okay?
  57. Need a preamp for my sub
  58. Cello Audio Palette
  59. Questions on xover and preamps.
  60. INA134, balanced an unbalanced, normal phase and inverted phase
  61. Help! needed a mic preamp for amplifier
  62. Passive Preamp - Grounding plan
  63. +/- 0.3V bumps on my ground
  64. Yet another preamp...
  65. Active Filter, Delay, and LT circuit board
  66. does anyone have a schematic and pcb layout for 3 band bass onboard eq?
  67. Carver C-1 Preamp Output Voltage Issue
  68. Adding bands to an equalizer circuit?
  69. transformer attenuator directly from v-out dac
  70. Looking for a better OP-Amp to replace a UTC TDA2822L
  71. Hafler DH-101 Pre-Amp
  72. Moog parametric EQ - proper pots?
  73. pga2310 output resistors
  74. HELP with Kaneda line stage PSU
  75. source/ speaker selector
  76. Stepped attenuator - getting the impedance right
  77. Volume control bent(slight) parasound PHP-850
  78. connect IR receiver
  79. High cap ceramic capacitors.... how they "sound"
  80. LED peak level indicator
  81. Balanced Matrix Mixer Question!
  82. Where shall I place the potentiometer?
  83. Preamp to go with an Arcam Delta290 power - do i need active, or will passive be ok?
  84. Is This Possible? Am I Crazy?
  85. Sony TA-E88b ?????
  86. coda pre-01 help fix?
  87. Need a 1 meg input pre stage-?!
  88. Balanced Line driver help.. noisy
  89. 6-band graphic eq project component substitutions / improvements
  90. 1176 compressor output transformer alternative
  91. Help-AC input connected directly to case!
  92. different gain levels and a PLLXO´s impedance
  93. Thorens restec V1 preamplifier
  94. Signal-Powered Compressor?
  95. simplest, purest mixer
  96. Ideas to improve this microphone preamp?
  97. Preamplifier from Lineup & Fotios for fun
  98. MM cartridge capacitance loading
  99. Volume Equilizer
  100. Wanted: Melos 110B schematics
  101. Can 555 circuit supply enough neg voltage
  102. amplifier works connected to PC .. but not when connected to car radio
  103. DIY a preamp
  104. Dynaco PAS Preamp - Complete Rebuild
  105. Subwoofer filter problem - Please help me
  106. Remote control receiver - help
  107. High end preamp kit
  108. Output tranny for 6080 tube
  109. Need to convert a Linar preamp from 220V to 120V
  110. help with interfacing microcontroller to pga volume chip
  111. Carbon pot vs digital pot
  112. Amplitude Errors in the Summed Response of Audio Crossover Filters
  113. Mixer/Amplifier
  114. Help upgrading opamps!
  115. EAD theatermaster 8800 problem
  116. Arduino controled PGA2310 Preamp
  117. Lightspeed clone, BOM
  118. Passive Line Splitter
  119. Resistor wattage for stepped attenuator
  120. Emitter bypass caps in a CE stage
  121. Wanted: Zero feedback 2-10x gain line stage...prefer symmetrical
  122. Cheap Valve Kits (such as this one)... Are they worth the effort?
  123. Need help with Adcom gcd-575
  124. Subwoofer channel mix + crossover
  125. Digital volume control from audiomodule
  126. audio mono preamplifier schematic needed
  127. 8 channel touch sense/remote volume controll
  128. Help with Hum - Hum Help - Aikido
  129. Denon 3808 Schematic
  130. 24 input/24 output mixer
  131. new idea (for me): dual first order building block PCB
  132. Op amps help! 3x3 12v matrix mixer
  133. Project: Stepped attenuator. 35 steps!
  134. Fixing a Kenwood 700c preamplifier - help please!
  135. Looking for help to put together Oracle tt and Graham arm
  136. Vintage Audire Diffet 2 preamp help
  137. This guy has a circuit tattoed on his arm
  138. DC servo and gain stage board with output zobel
  139. class A Line level buffer
  140. Blue tooth headset used for wireless
  141. Looking for: wireless remote control of volume/balanceH
  142. Very noisy pre-amp outputs.
  143. I need a line level splitter and don't want to spend $50+ on a transformer
  144. reusing a 3-way crossover
  145. Is this Design practicable?
  146. Mis-behaving crossover/preamp
  147. Low distortion & noise digitally controlled volume chip
  148. Passive (active) preamplifier with selector (motorized ALPS, IR)
  149. How to add an extra set of RCA outputs
  150. line level unbalanced to balanced converter
  151. Balanced output confusion
  152. Why do i need a preamp?
  153. Shelving 2nd order high-pass?
  154. Listening for the best attenuator load for direct out AKM and CS dac chips
  155. Sylonex and Arduino preamp
  156. ACTIVE loudness control
  157. CJ PV-15 Pre
  158. Schematic wanted/LINN KAIRN PRO
  159. Have I ruined my V&L systems EC3 -vintage- active crossover??
  160. Mic Preamp + Sunt Regulator a la E. Borbely
  161. +-70v and opamps
  162. NE5532 preamp works only in mono
  163. Velleman K8084 pre-amp kit question
  164. Quick mixer question
  165. Heybrook C3 & P3, power conversion, help/info.
  166. Problem - Line level splitter
  167. Schematic wanted
  168. JFET/MOSFET complementary-differential preamplifier
  169. Active Croosover PAss labs
  170. Class A op amp circuits with balanced i/o
  171. Offset Nulling for BUF03 Buffer
  172. Nakamichi CA-5 Stereo Pre and major hum
  173. Lcd bargraph
  174. help! Exploding diy remote control volume board!
  175. tilt eq schematic check
  176. AMB LABS A20 Discrete
  177. 10band equalizer
  178. Input selector, automatic
  179. Help making a circuit
  180. Looking for Krell KRC-3 preamp schematics
  181. Long cable query
  182. Newbie. What AM I trying to find/build?
  183. http://www.diyaudio.com/forums/analog-line-level/181105-mezmerize-build.html#post2432
  184. preamp - at the most basic level
  185. LED VU meter using existing bar graph
  186. MOX Active Crossover II Gain Adjustment
  187. Help with a JC2
  188. Hong Kong Fakes
  189. Does the cable impedance matter when making audio level measurements?
  190. rolling of bass before amp
  191. Cheap volume control chip
  192. HQ Preamp - Elector scheme or other suggestion
  193. Three Pair Cable
  194. tube preamp mod for bass bypass to ss power IN?
  195. Adcom GFP-715
  196. DIY line-level interconnects
  197. Measuring impedance of Pot/attenuator
  198. Question about shielded wire...
  199. Subwoofer filter
  200. Mono to Dual Channel convert
  201. Input selector (like Quad)
  202. Germanium transistors for a preamplifier
  203. the hat-trick volume control ;)
  204. Balanced LDR preamp
  205. Multichannel volume control
  206. The design of active crossovers- Douglas Self wants your opinions
  207. newb looking for preamp design and a few questions answered
  208. Voltage Controlled Switch
  209. osufishman stereo line level to mono
  210. Poor TV audio S/N
  211. Need help with mic preamp
  212. Ideas for a simple passive band-stop filter?
  213. Wiring a 10k fader pot?
  214. variable frequency tilt/shelf filter - bad idea?
  215. 47 Laboratory started selling kits
  216. Douglas Self's Active Crossovers book
  217. New Line Pre-Amp taking Shape
  218. Managing multiple inputs & master level...
  219. AR-XA woes...
  220. Help!! LM317T Filament Heater Problem
  221. Fully Balanced Input/Output
  222. mccormack micro phono drive
  223. Differential buffer without feedback?
  224. Does the intrinsic low-end roll-off of a mid driver change the phase error?
  225. Accuphase C-200 Stereo Control Preamp...
  226. DIY 4 Channel Stereo Mixer
  227. preamp
  228. no output on skytec pro 240 amp
  229. pro-ject phonobox se opamp substitution
  230. Trying to find a spectrum analyser...
  231. Transfer LP TO CD
  232. Bi-amp crossover design
  233. active crossover board capabilities - I want your input
  234. DIY BJT buffer design
  235. Another easy to answer question that is above me. XLR vs Ground loop
  236. Crossovers question - car audio
  237. Using a Precision Current Source to drive an LDR attenuator
  238. Crossfeed problem (Jan Meier's design)
  239. Help me understand the "pre" stage levels.
  240. Instrumentation op-amps for audio
  241. Audio Buffer 8 years after
  242. Subwoofer filter with sensing LFE switch
  243. JFET based audio source selector
  244. 5-BAND EQ: Constant Q or conventional topology?
  245. Discrete line amplifier question
  246. How to calculate capacitor values for fully parametric EQ?
  247. DIY stepped attenuator using C7D0423N rotary switch.
  248. Inverting op amp out of phase?
  249. diy dj mixer
  250. Comparison of Light Dependent Resistors

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