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  1. Can't seem to get OpAmps to work
  2. Yamaha Equalizer 1027 service manual wanted
  3. Yamaha RX-V480 Tuner / FM Bands Wacky
  4. Discrete MOSFET 12db High Pass Filter
  5. ESP Proyect97 PCB
  6. Christmas Project - Audio Analyser
  7. HELP : what wattage for resistor ?
  8. x'over for a sub?
  9. Overlay stereo with mono, without losing stereo?
  10. Hi Level Amp output connect to RCA input
  11. Uneven Hafler 110 output
  12. Preamp-Buffers - simple idea
  13. OPA1612 compared to OPA2228(and a lil question about caps)
  14. How to wire up Audio Matching Transformer?
  15. VU meter arduino project help
  16. 8ch ADC
  17. Passive mixing network -- calculating total loss?
  18. DIY 3 way active crossover: as Christmas Holiday Project
  19. Upgrading the SM Pro AUDIO DI 4V
  20. fully balanced line with THAT 1206 plus 1646
  21. GHOST in 3 band graphic equalizer!! SOS!
  22. Weak bass problem...
  23. Please help me to debug the Lighter Note Attenuator
  24. Yet another remote volume control
  25. Questions about AC coupling and opamp biasing
  26. Request for Guides/Explanation Regarding Audio Mixer Circuits
  27. Preamp mod with a low cut shelf filter
  28. Linn Kairn repair
  29. Filter Bass and treble to the input of a microprocessor
  30. unbalanced to balanced 4 ch kit
  31. I need a super bass tone control
  32. Active Crossover for Open Baffle 2-way
  33. Simplist and tiniest PGA2320 kit out there?
  34. Impedance matching and 30dB drop
  35. Are there many people using BNC out there? or RG6 Quad Shield?
  36. output level of dvd playre?
  37. Suggestions for dual PS
  38. Yet Another IR Remote Volume Controller? No, I want one WITHOUT uC
  39. best balanced volume control solution ?
  40. help with muting relay
  41. Need help: Input selector control for 6 channels
  42. Opamp rollers and fiddlers this is for you.
  43. Good quality active preamp
  44. Convert mini Pre-amp from AC to DC power
  45. Volume control, Evil Mad Scientist style
  46. McIntosh C28 With Bad Transformer
  47. analogue active filter: MFB or Sallen Key?
  48. Help with 6-Bit R-2R Relay Attenuator
  49. Current conveyor as a voltage amplifier
  50. DIY monitor controller modules orderů
  51. Active crossover component suggestions?
  52. can a preamp be used directly for headphone?
  53. Sharing a Single Inductor for Multiple Passive LR Filters?
  54. Audio Research LS-3 power transformer
  55. Lil Pre Amp
  56. Preamp OP-AMP...help.
  57. looking to try to split 80hz from an active stereo 3 way
  58. PGA2311 LCD Volume Remote Control+GOLD RCA Jeff Rowland
  59. A new fully analog FM modulated wideband optical transport Open Standard.
  60. wiring schematic for DPDT on-on-on toggle selector
  61. Mods for Denon AVR receiver or pre-amp?
  62. Mods for Denon AVR receiver or pre-amp?
  63. A question of volume control
  64. Cable Questions
  65. Interconnect cable Recommendations
  66. Another simple project I can't do. Using DAC from CDP
  67. Can i make a balanced preamp only using OPA2134 ?
  68. When is the Aikido going to be on sale again? is there a group buy I can get in on?
  69. Swapping potentiometer
  70. What should I be searching for
  71. Signal booster for cd player
  72. Preamp output relay - or other device
  73. Matching my silonex LDR
  74. Ballanced Unballanced what does it mean??
  75. LP/HP crossover for 2.1 DIY preamp?
  76. Biamp EQ-210 as a "Studio" EQ?
  77. Current noise between DC coupled op amps?
  78. Soft Clipper Central Station?
  79. Request active sub xo schematic
  80. Multichannel splitter and gain structure control box
  81. compact stackable relay attenuator - something new
  82. DIY Crossover/Filter: Power Handling
  83. Getting to know the DOODs ...
  84. LED battery indicator
  85. LME49713
  86. Tube preamp kit from ebay - worth my time?
  87. small pre-amp control board design help, I will pay :-)
  88. Value of Stepped Attenuator for Passive Amp.
  89. Differential Line Driver - Impedance Questions
  90. opa 2889 buffer circuit
  91. Help needed with diy outpout switcher relay based
  92. How to make a volume control 50cm from pre-amp?
  93. MAT02 transistors on eBay, are they genuine?
  94. Newb interested in DIY preamp
  95. Help hooking up a car VU meter unit to a home AV reciever
  96. Modular Preamplifier with IC Class A (SAM Electronic Circuits)
  97. Discrete opamp vs regular op amps
  98. Bob Cordell's VinylTrak
  99. NE5532 Tone Control
  100. Muting arrangements for ESP kits: P05B and P09B
  101. Schematics for c3m based preamp
  102. TA 377A preamp
  103. preamp and active filter for class AB amp
  104. Getting a PGA2310 to be silent
  105. SPL EQ Magix studio mic preamp
  106. What's wrong with this typicial preamp circuit?
  107. How Many Line-Level Components?
  108. Need to make a simple balance control
  109. DRV134 and protection diodes
  110. Passive line level 3th order RC XO with no insertion losses?
  111. That 1646 balanced line driver PCB
  112. Help with a PLLXO
  113. LME49990 design note
  114. Cg in THAT 1512
  115. Transistor Preamp Design for ADC
  116. P1 preamplifier
  117. MUSES 72320 electronic volume
  118. DIY 1/2-inch Measurement Microphone
  119. Adcom GTP-450 - Right Channel Fades Out
  120. Passive pre for my AudioSector
  121. Capacitive crosstalk between input/output wiring
  122. Cantilevered-Cascode Buffer (CCB) aka LinuxBuffer
  123. Accelerometer to audiointerface
  124. Home Theater bypass for a tube pre amp - Help!!!
  125. Ultrabass, psychoacoutstic low bass for little speakers
  126. Discrete Opamp test circuits
  127. Inverted Polarity of tube Pre-Amps
  128. Looking For Someone To Build A Vandersteen X-2
  129. Configurable active crossover - Newbie jumping in feet first
  130. Mic Preamp Improvements? (Soundcraft 800B)
  131. electret mic preamp gain
  132. Question about active crossover
  133. Rod Elliott ESP opamp pre's question
  134. Design questions for opamp-based preamp
  135. Preamp with remote using radio not ir
  136. Squeaking Noise with 48V in DAV BG1
  137. I need mini Pre-amp board, please help
  138. IS THIS EARTH LOOP,LEAKING CAPS OR BROKEN LINK?
  139. looking to build a "classic" tube compressor
  140. lm833 single supply
  141. How to protect device from contamination through output
  142. Lundahl LL1545A hookup question...
  143. Inverting rail to rail unity buffer
  144. Subwoofer Controller Kit - Altronics Kit No K5562
  145. Replacement cap for Wima MKP10 0,047UF
  146. Programming of Oxmoor equalizers via PA-422
  147. Help in choosing a potentiometer as a "Passive preamplifier"
  148. Test IC TL074 CN
  149. Relay audio switcher
  150. Analog audio switcher
  151. BSS FDS 340 crossover
  152. Discrete Logic ABX Switch Box
  153. Audio System Controller
  154. the definitive opamp decouplig question
  155. buffer stages performance
  156. Rolling the RANE AC23
  157. Automatic Line level Attenuation Circuit
  158. Check my Opamp Preamp Please
  159. Choosing an active 3-way crossover
  160. Please suggest to me the best affordable LDR preamp kits
  161. Custom Rotary DJ mixer.
  162. Programmer-help for fleabay-remote-kit
  163. Wiring advice for internal pre amp inputs
  164. Discrete Opamp Open Design
  165. microprocessor And control
  166. Latest project.
  167. Remote control won't shut up
  168. Looking to DIY a DI box -10dBv to +4dBu
  169. pre amp suggestions, DIY or Non DIY, Im easy
  170. Musical Fidelity Pre Amp II
  171. Help with DIY passive balanced line level attenuator pads.
  172. RF-blocking???
  173. Jfet Line preamp, to cascode or not.
  174. Mic pre strange high-freq boost (what is broken here?)
  175. New pre amp coming. Change over to 115V help...
  176. XO of Mission 770mk2
  177. Equaliser design for a total n00b
  178. Trying to remote control volume on vintage HK
  179. Passive Pre Chassis and Budget Allocation
  180. Linkwitz Transforms
  181. INA217 is noisy
  182. need sound attenuator
  183. NAIM NAC 42.5 Vintage for my updated NYTECH CPA 602 - 2012
  184. Volume Control Problem
  185. Balanced Signal over 500 Metres!
  186. Single voltage powered Tone Control
  187. PGA2320 and Atmega8 Bascom Source Code Problem
  188. Tone Control Filter
  189. phase linear filters - any good?
  190. Summing (2x) opposite-phase signals with Transformers
  191. A circuit to monitor the analog audio line level
  192. diy Pre-amp question
  193. Critique please: Analogue -> Digital (TOS-LINK)
  194. Circuit Diagram wanted
  195. Xkitz 2-way Active Crossover Kit
  196. Need orientation with tweaking a TASCAM MF-P01
  197. Connecting Multiple op amp inputs from a single op amp output
  198. digital output
  199. Balanced Buffer Needed with a Balanced Volume Control?
  200. $150-200$ Preamp Build?
  201. Balanced tube preamplifier: suggestions?
  202. Adding summed output for sub
  203. Please help me understand this circuit...newbie here
  204. lpf and hpf setting.
  205. After search...need schematic to stereo preamp with only 4 bjt transistors
  206. Help with Zero Field input circuit
  207. The XCEN -- Balanced to Single Ended Converter
  208. Building active cross-overs into multiple power amps?
  209. "Firefly" Unity Gain Buffer
  210. Parasound P/LD 1500 hissing sound in left channel
  211. another studiomaster story
  212. Transformer with 3 secondaries
  213. Need sub woofer controller
  214. Subwoofer controller
  215. APT audio products
  216. how to hook up my preamp for recording??
  217. Class A preamp: please critique my circuit and give me helpful suggestions.
  218. Mixing slope types?
  219. Measuring Line Level Output?
  220. Buss Channel with Noise after wrong soldered bypass Cap.
  221. Volume pot for line level stereo
  222. Studiomaster 16-4
  223. Opinions: Class A Zen Preamplifier eBay Kit
  224. OpAmp based Summing circuit -- Is greater than Unity Gain here a technical problem?
  225. HELP differntial audio
  226. Part needed: Counterpoint SA-1000 tape/source toggle
  227. dc coupled aikido output?
  228. Ipod Stereo to mono summing
  229. DIY preamp component choice
  230. Velleman K8084 Earthing / Grounding
  231. Active Tone Control and preamp. Need help urgent!
  232. Repairing my balanced inputs
  233. Help with preamp build
  234. Tape out of passive preamp into passive preamp/remove resistors?
  235. SE-ONE Spatial Enhancer
  236. Potmeter to balanced amp= Hum; Help!
  237. LEDs as references in current sources
  238. Looking for inkel pp 821 pre amp service manual
  239. Original Mezmerize thread?
  240. Active xover help.
  241. The Effects Of High Resistance Interconnects
  242. dual balanced ne5534 schematic
  243. JA Pre and MyRef - FE Integration
  244. RFI filter and DC blocking cap
  245. Dyanmic mic to electret type input
  246. Help with audio test equipment design
  247. Simple precision constant current LDR controller
  248. How to control 10 pots in active cross?
  249. HF to LF shelving filter
  250. Lawo W990VS/9 - Connection Question

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