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  1. My boozehound phono stage build
  2. Pre amp kit
  3. balanced preamplifier based on LME49990
  4. Merging two channels with passive low passes
  5. Old Colony Sound Lab T-2D Line Amp - Any Info?
  6. Impedance Bridging and Isolation Tranformer
  7. TDA7315 chip parameters interpretation
  8. MFP-102 N fet compatibility
  9. What is the effect of a 22K res in series with a 25K volume pot?
  10. Senior Project: Bandpass Equalizer pedal
  11. [WANTED] Mark Levinson No 26S Service Manual/Schematic
  12. ORTF is best for stereo recording
  13. A zero impedance preamp and CMRR
  14. good preamp
  15. calculate crossover with Re or impedance ?
  16. Op-Amp Preamp Circuit for Electret Mic
  17. Simple Router (then bass management)
  18. Second order shelving filter
  19. Help with component selection.
  20. passive to tame 8khz peak
  21. Hafler SE100 Preamplifier / Symmetric B1 buffer hybrid
  22. Adcom GFP-750 -Needs Repair
  23. Variable gain op-amp for volume control (vs normal voltage divider pot)
  24. Germanium Transistor and FET opamp
  25. 5 zone preamp based on Arduino controlled optocoupler
  26. How to select the right impedance for volume control
  27. In vehicle Pre-amp for mic (12+ VDC)
  28. Resistor-Diode-Relay Logic Source Selector
  29. 3 into 1 input the other way round
  30. Nagging Ground Issue
  31. Looking for Princeton Applied Research 115 MANUAL
  32. Active Band Pass Filter with +/- Gain
  33. Components source
  34. Guitar ABY or Headphone Amplifier?
  35. rod elliot p88 preamp knob arrangment
  36. C-Mos opamps in audio preamplifiers
  37. Cheap, balanced XLR passive pre?
  38. DIY crossover - Sallen-Key?
  39. Hafler 915 preamp cap question
  40. analog 3.5mm to digital usb possible?
  41. Mixer Pre-amp
  42. DIY tube preamp - help with choosing the right kit
  43. opamp channels mysteriously mixing ¿quantum thing or me too dumb?
  44. MC-22 schematic question
  45. unbalanced/balanced to balanced converter
  46. My line buffer preamp
  47. Attenuating Preamp Filter Question
  48. biamping with one DAC
  49. Audiophile active crossover
  50. adding EQ without screwing up sound; few questions...
  51. SSTART Pcb and power supply project
  52. Help with a simple envelop detector filter. (averaging the signal)
  53. audio output switch? Monitor Controller
  54. Very simple volume control with IR remote
  55. JFETs and MOSFETs biasing questions
  56. I need advise on audio mixing boards?
  57. pre amp output
  58. OPA134 Amp Help
  59. OPA134
  60. Capacitors voltage rating
  61. Capacitors voltage rating
  62. attenuation on dac output with U-pad
  63. passive preamp
  64. preamp necessary?
  65. Will phono pre > passive pre > amp work well enough?
  66. 60Hz hum problem, please help
  67. distortion cancellation for diode limiter
  68. electret mic preamp for micro ADC
  69. Understanding "Voltage - Input Offset" Parameter
  70. Schade MOSFET + Feedback Line Amp
  71. Preamp or receiver?
  72. Sony BX-270 Datasheet Wanted
  73. Classe Audio DR6 Bias
  74. Dual gang potentiometer for 'mixer'
  75. Aikido Preamp Bass & Treble Controls
  76. Tried active crossover, mean hum...
  77. How to use TDA7439 for center and subwoofer
  78. Active notch filter
  79. simple pre amp volume control with seperate mono out
  80. Help me wire up my SUT correctly (Tamura TKS-27)
  81. How can I split a mixer bus?
  82. Beau's Bias Circuit Schematic
  83. What should be included in a subwoofer lowpass filter?
  84. Potentiometer volume control treble loss bleed
  85. Adcom GFP 815 Pre Amp-Any users?
  86. speaker out to preamp out while driving speaker
  87. 6dB Active crossover
  88. Replacing volume pot from 100K to 50K reduces gain?
  89. Dual Ganged Stereo Volume Control
  90. McIntosh/Conrad Johnson pairing
  91. Input Impedance Question
  92. Active studio monitors/ crossovers
  93. new discrete opamp for line preamplifier
  94. Music Angel Pre Amp
  95. Tilt Equalizer Filter
  96. Parametric EQ based bass boost circuit
  97. Power On Delay/Loss of AC Detector Relay
  98. Balanced Line Driver with DRV134
  99. PGA3211 6.1 assembling
  100. PGA2311 code
  101. SMD High-Voltage Discrete Diamond Buffer
  102. How best to implement image mode controls
  103. Preamp has unwanted delay (and hum)
  104. Pot values in LM1036 preamp circuit
  105. simple three steps attenuator
  106. Behringer Eurorack UB1622fx PRO schematic
  107. Need help with Coustic XM-5e Crossover
  108. Small Fader + Volume control for Car
  109. PGA2311 Evaluation
  110. Are these pots what I need for my preamp?
  111. IR Remote Control
  112. That Corporation 1200 , 1203 , 1206 circuits
  113. portable set field mixer/ mic pre
  114. Compact simple EQ
  115. Digitally controlled pot distortion?
  116. Help me Choose Between A and B
  117. Quad Eight Electronics EQ712
  118. Adding a line level output to PGA2311 preamp
  119. Using Joachim Gerhard Filter Buffers as balanced crossover
  120. Impedance measuring jig and iSEMcon kit
  121. LM1036N Potentiometer Type
  122. 4558d
  123. 10M45 as simple preamp...
  124. Kenwood c-2 balance pot
  125. Attenuator Impedance for Adcom GFA-535?
  126. McIntosh C712 Preamplifier - Schematic wanted
  127. Speaker Combination in Custom Installation, please help
  128. 5 band equalizer, need help!!
  129. Parasound P/HP-850 Preamp Problem
  130. Crossover between pre and power amp for sub
  131. miniDSP pre-amp & volume control idea
  132. Klark Teknik Upgrae for 2ch
  133. signal level
  134. THAT 1200 Balaced Receiver IC?
  135. Patch Bay With Buffered Splitter/Channel Inputs Ideas
  136. Can't seem to get OpAmps to work
  137. Yamaha Equalizer 1027 service manual wanted
  138. Yamaha RX-V480 Tuner / FM Bands Wacky
  139. Discrete MOSFET 12db High Pass Filter
  140. ESP Proyect97 PCB
  141. Christmas Project - Audio Analyser
  142. HELP : what wattage for resistor ?
  143. x'over for a sub?
  144. Overlay stereo with mono, without losing stereo?
  145. Hi Level Amp output connect to RCA input
  146. Uneven Hafler 110 output
  147. Preamp-Buffers - simple idea
  148. OPA1612 compared to OPA2228(and a lil question about caps)
  149. How to wire up Audio Matching Transformer?
  150. VU meter arduino project help
  151. 8ch ADC
  152. Passive mixing network -- calculating total loss?
  153. DIY 3 way active crossover: as Christmas Holiday Project
  154. Upgrading the SM Pro AUDIO DI 4V
  155. fully balanced line with THAT 1206 plus 1646
  156. GHOST in 3 band graphic equalizer!! SOS!
  157. Weak bass problem...
  158. Please help me to debug the Lighter Note Attenuator
  159. Yet another remote volume control
  160. Questions about AC coupling and opamp biasing
  161. Request for Guides/Explanation Regarding Audio Mixer Circuits
  162. Preamp mod with a low cut shelf filter
  163. Linn Kairn repair
  164. Filter Bass and treble to the input of a microprocessor
  165. unbalanced to balanced 4 ch kit
  166. I need a super bass tone control
  167. Active Crossover for Open Baffle 2-way
  168. Simplist and tiniest PGA2320 kit out there?
  169. Impedance matching and 30dB drop
  170. Are there many people using BNC out there? or RG6 Quad Shield?
  171. output level of dvd playre?
  172. Suggestions for dual PS
  173. Yet Another IR Remote Volume Controller? No, I want one WITHOUT uC
  174. best balanced volume control solution ?
  175. help with muting relay
  176. Need help: Input selector control for 6 channels
  177. Opamp rollers and fiddlers this is for you.
  178. Good quality active preamp
  179. Convert mini Pre-amp from AC to DC power
  180. Volume control, Evil Mad Scientist style
  181. McIntosh C28 With Bad Transformer
  182. analogue active filter: MFB or Sallen Key?
  183. Help with 6-Bit R-2R Relay Attenuator
  184. Current conveyor as a voltage amplifier
  185. DIY monitor controller modules order…
  186. Active crossover component suggestions?
  187. can a preamp be used directly for headphone?
  188. Sharing a Single Inductor for Multiple Passive LR Filters?
  189. Audio Research LS-3 power transformer
  190. Lil Pre Amp
  191. Preamp OP-AMP...help.
  192. looking to try to split 80hz from an active stereo 3 way
  193. PGA2311 LCD Volume Remote Control+GOLD RCA Jeff Rowland
  194. A new fully analog FM modulated wideband optical transport Open Standard.
  195. wiring schematic for DPDT on-on-on toggle selector
  196. Mods for Denon AVR receiver or pre-amp?
  197. Mods for Denon AVR receiver or pre-amp?
  198. A question of volume control
  199. Cable Questions
  200. Interconnect cable Recommendations
  201. Another simple project I can't do. Using DAC from CDP
  202. Can i make a balanced preamp only using OPA2134 ?
  203. When is the Aikido going to be on sale again? is there a group buy I can get in on?
  204. Swapping potentiometer
  205. What should I be searching for
  206. Signal booster for cd player
  207. Preamp output relay - or other device
  208. Matching my silonex LDR
  209. Ballanced Unballanced what does it mean??
  210. LP/HP crossover for 2.1 DIY preamp?
  211. Biamp EQ-210 as a "Studio" EQ?
  212. Current noise between DC coupled op amps?
  213. Soft Clipper Central Station?
  214. Request active sub xo schematic
  215. Multichannel splitter and gain structure control box
  216. compact stackable relay attenuator - something new
  217. DIY Crossover/Filter: Power Handling
  218. Getting to know the DOODs ...
  219. LED battery indicator
  220. LME49713
  221. Tube preamp kit from ebay - worth my time?
  222. small pre-amp control board design help, I will pay :-)
  223. Value of Stepped Attenuator for Passive Amp.
  224. Differential Line Driver - Impedance Questions
  225. opa 2889 buffer circuit
  226. Help needed with diy outpout switcher relay based
  227. How to make a volume control 50cm from pre-amp?
  228. MAT02 transistors on eBay, are they genuine?
  229. Newb interested in DIY preamp
  230. Help hooking up a car VU meter unit to a home AV reciever
  231. Modular Preamplifier with IC Class A (SAM Electronic Circuits)
  232. Discrete opamp vs regular op amps
  233. Bob Cordell's VinylTrak
  234. NE5532 Tone Control
  235. Muting arrangements for ESP kits: P05B and P09B
  236. Schematics for c3m based preamp
  237. TA 377A preamp
  238. preamp and active filter for class AB amp
  239. Getting a PGA2310 to be silent
  240. SPL EQ Magix studio mic preamp
  241. What's wrong with this typicial preamp circuit?
  242. How Many Line-Level Components?
  243. Need to make a simple balance control
  244. DRV134 and protection diodes
  245. Passive line level 3th order RC XO with no insertion losses?
  246. That 1646 balanced line driver PCB
  247. Help with a PLLXO
  248. LME49990 design note
  249. Cg in THAT 1512
  250. Transistor Preamp Design for ADC

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