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  1. small pre-amp control board design help, I will pay :-)
  2. Value of Stepped Attenuator for Passive Amp.
  3. Differential Line Driver - Impedance Questions
  4. opa 2889 buffer circuit
  5. Help needed with diy outpout switcher relay based
  6. How to make a volume control 50cm from pre-amp?
  7. MAT02 transistors on eBay, are they genuine?
  8. Newb interested in DIY preamp
  9. Help hooking up a car VU meter unit to a home AV reciever
  10. Modular Preamplifier with IC Class A (SAM Electronic Circuits)
  11. Discrete opamp vs regular op amps
  12. Bob Cordell's VinylTrak
  13. NE5532 Tone Control
  14. Muting arrangements for ESP kits: P05B and P09B
  15. Schematics for c3m based preamp
  16. TA 377A preamp
  17. preamp and active filter for class AB amp
  18. Getting a PGA2310 to be silent
  19. SPL EQ Magix studio mic preamp
  20. What's wrong with this typicial preamp circuit?
  21. How Many Line-Level Components?
  22. Need to make a simple balance control
  23. DRV134 and protection diodes
  24. Passive line level 3th order RC XO with no insertion losses?
  25. That 1646 balanced line driver PCB
  26. Help with a PLLXO
  27. LME49990 design note
  28. Cg in THAT 1512
  29. Transistor Preamp Design for ADC
  30. P1 preamplifier
  31. MUSES 72320 electronic volume
  32. DIY 1/2-inch Measurement Microphone
  33. Adcom GTP-450 - Right Channel Fades Out
  34. Passive pre for my AudioSector
  35. Capacitive crosstalk between input/output wiring
  36. Cantilevered-Cascode Buffer (CCB) aka LinuxBuffer
  37. Accelerometer to audiointerface
  38. Home Theater bypass for a tube pre amp - Help!!!
  39. Ultrabass, psychoacoutstic low bass for little speakers
  40. Discrete Opamp test circuits
  41. Inverted Polarity of tube Pre-Amps
  42. Looking For Someone To Build A Vandersteen X-2
  43. Configurable active crossover - Newbie jumping in feet first
  44. Mic Preamp Improvements? (Soundcraft 800B)
  45. electret mic preamp gain
  46. Question about active crossover
  47. Rod Elliott ESP opamp pre's question
  48. Design questions for opamp-based preamp
  49. Preamp with remote using radio not ir
  50. Squeaking Noise with 48V in DAV BG1
  51. I need mini Pre-amp board, please help
  52. IS THIS EARTH LOOP,LEAKING CAPS OR BROKEN LINK?
  53. looking to build a "classic" tube compressor
  54. lm833 single supply
  55. How to protect device from contamination through output
  56. Lundahl LL1545A hookup question...
  57. Inverting rail to rail unity buffer
  58. Subwoofer Controller Kit - Altronics Kit No K5562
  59. Replacement cap for Wima MKP10 0,047UF
  60. Programming of Oxmoor equalizers via PA-422
  61. Help in choosing a potentiometer as a "Passive preamplifier"
  62. Test IC TL074 CN
  63. Relay audio switcher
  64. Analog audio switcher
  65. BSS FDS 340 crossover
  66. Discrete Logic ABX Switch Box
  67. Audio System Controller
  68. the definitive opamp decouplig question
  69. buffer stages performance
  70. Rolling the RANE AC23
  71. Automatic Line level Attenuation Circuit
  72. Check my Opamp Preamp Please
  73. Choosing an active 3-way crossover
  74. Please suggest to me the best affordable LDR preamp kits
  75. Custom Rotary DJ mixer.
  76. Programmer-help for fleabay-remote-kit
  77. Wiring advice for internal pre amp inputs
  78. Discrete Opamp Open Design
  79. microprocessor And control
  80. Latest project.
  81. Remote control won't shut up
  82. Looking to DIY a DI box -10dBv to +4dBu
  83. pre amp suggestions, DIY or Non DIY, Im easy
  84. Musical Fidelity Pre Amp II
  85. Help with DIY passive balanced line level attenuator pads.
  86. RF-blocking???
  87. Jfet Line preamp, to cascode or not.
  88. Mic pre strange high-freq boost (what is broken here?)
  89. New pre amp coming. Change over to 115V help...
  90. XO of Mission 770mk2
  91. Equaliser design for a total n00b
  92. Trying to remote control volume on vintage HK
  93. Passive Pre Chassis and Budget Allocation
  94. Linkwitz Transforms
  95. INA217 is noisy
  96. need sound attenuator
  97. NAIM NAC 42.5 Vintage for my updated NYTECH CPA 602 - 2012
  98. Volume Control Problem
  99. Balanced Signal over 500 Metres!
  100. Single voltage powered Tone Control
  101. PGA2320 and Atmega8 Bascom Source Code Problem
  102. Tone Control Filter
  103. phase linear filters - any good?
  104. Summing (2x) opposite-phase signals with Transformers
  105. A circuit to monitor the analog audio line level
  106. diy Pre-amp question
  107. Critique please: Analogue -> Digital (TOS-LINK)
  108. Circuit Diagram wanted
  109. Xkitz 2-way Active Crossover Kit
  110. Need orientation with tweaking a TASCAM MF-P01
  111. Connecting Multiple op amp inputs from a single op amp output
  112. digital output
  113. Balanced Buffer Needed with a Balanced Volume Control?
  114. $150-200$ Preamp Build?
  115. Balanced tube preamplifier: suggestions?
  116. Adding summed output for sub
  117. Please help me understand this circuit...newbie here
  118. lpf and hpf setting.
  119. After search...need schematic to stereo preamp with only 4 bjt transistors
  120. Help with Zero Field input circuit
  121. The XCEN -- Balanced to Single Ended Converter
  122. Building active cross-overs into multiple power amps?
  123. "Firefly" Unity Gain Buffer
  124. Parasound P/LD 1500 hissing sound in left channel
  125. another studiomaster story
  126. Transformer with 3 secondaries
  127. Need sub woofer controller
  128. Subwoofer controller
  129. APT audio products
  130. how to hook up my preamp for recording??
  131. Class A preamp: please critique my circuit and give me helpful suggestions.
  132. Mixing slope types?
  133. Measuring Line Level Output?
  134. Buss Channel with Noise after wrong soldered bypass Cap.
  135. Volume pot for line level stereo
  136. Studiomaster 16-4
  137. Opinions: Class A Zen Preamplifier eBay Kit
  138. OpAmp based Summing circuit -- Is greater than Unity Gain here a technical problem?
  139. HELP differntial audio
  140. Part needed: Counterpoint SA-1000 tape/source toggle
  141. dc coupled aikido output?
  142. Ipod Stereo to mono summing
  143. DIY preamp component choice
  144. Velleman K8084 Earthing / Grounding
  145. Active Tone Control and preamp. Need help urgent!
  146. Repairing my balanced inputs
  147. Help with preamp build
  148. Tape out of passive preamp into passive preamp/remove resistors?
  149. SE-ONE Spatial Enhancer
  150. Potmeter to balanced amp= Hum; Help!
  151. LEDs as references in current sources
  152. Looking for inkel pp 821 pre amp service manual
  153. Original Mezmerize thread?
  154. Active xover help.
  155. The Effects Of High Resistance Interconnects
  156. dual balanced ne5534 schematic
  157. JA Pre and MyRef - FE Integration
  158. RFI filter and DC blocking cap
  159. Dyanmic mic to electret type input
  160. Help with audio test equipment design
  161. Simple precision constant current LDR controller
  162. How to control 10 pots in active cross?
  163. HF to LF shelving filter
  164. Lawo W990VS/9 - Connection Question
  165. GlassWare Audio
  166. Source select and passive volume for microcontroller-based preamp?
  167. Microcontroller stepped LDR
  168. Newbie question - PCB mounting
  169. PGA2310 based preamp+ remote
  170. Summing Amp Transformers
  171. Krell KSL AC Conversion 110 -> 240
  172. Insert-send to balanced converter
  173. That 1512 fixed gain follow by a second stage
  174. "Tape Out" on DIY Passive Pre
  175. Help to make a pcb for portable stereo preamp ?
  176. Modifying Maplin preamp kit
  177. Help choosing opamp for this circuit
  178. Help! Microphone impedance matching?
  179. adding opamp filter stage
  180. parametric filter to shelving
  181. opamps - fakes?
  182. combine active xo and parametric eq
  183. Discussion of CCS control for LED/LDR volume adjustment
  184. Small Signal Transistor and Diode Models from NXP
  185. Output Transformer Waveform- Is it good or not?
  186. TL082 Preamp Instability
  187. HELP! line-level crossover design for solar-powered biamped soundsystem
  188. How to integrate Baffle Step Compensation into existing discrete linestage?
  189. Fundamental Oscilliscope Usage
  190. Balanced buffers - analogue volume control
  191. A second order active filter with single supply - Zin ?
  192. Tamradio 600:600 Transformers
  193. Input bias current and impedance of an op amp?
  194. Otari MX7000
  195. Vca's
  196. Optimum value for R(s) in a JFET follower?
  197. Active preamp gain
  198. complementary jfet input trimmer
  199. Looking for a PGA2320 PCB
  200. Looking for discrete high performance linestage design with 12v rails
  201. Which power transformer for low hum?
  202. 2SA1015 SRPP follower bridge mode
  203. H/K 595 subwoofer connect to Aiwa reciever.
  204. Aragon 47k Schematics?
  205. Best OP-amp for EQ circuit?
  206. Broskie
  207. Active Stereo Preamp , OPAMP VS TRANSISTORS , which on would you prefer ?
  208. XLR jacks
  209. Which Aikido?
  210. Electret Mic Power Circuit for PC Input
  211. Soundcraft B100 (TL072...again)
  212. XLR, RCA and CMRR - a few questions
  213. Help Designing Preamp Schematic
  214. Here's a weird enquiry
  215. C1583 & A798
  216. Volume Control with symmetrical out and in
  217. Building a Tee attenuator
  218. Noise in balanced outputs - Parasound
  219. Need some advice on a level booster...
  220. INA134-DRV134 balanced preamp
  221. how to add protection circuits (swith circuit)
  222. resistor(s) in ground paths to reduce hum, etc.
  223. My (quick and dirty) take at a PLLXO for OB, help is welcome
  224. Lundahl LL1530 - audio application?
  225. SP-6 Light with ECC801S
  226. Active crossover help
  227. Line Level Preamp, Using JFETs, in a can.
  228. Replacement push buttons for hafler?
  229. My fuzz pedal project is behaving badly
  230. My fuzz pedal project is behaving badly
  231. Op-amp Upgrade
  232. Output transformers for Line-level signal.
  233. PGA2310 control module
  234. Shields in internally balanced equipment
  235. First effort: MM/MC phono preamp with DC servo
  236. How to figure gyrator treble boost gain
  237. AirTight ATC-2 Preamp Pictures
  238. Need help with the NE5543N opamp
  239. help building a crossover/lowpass filter
  240. Poles and throws?
  241. DC buildup in Linkwitz Transform
  242. BOZ (bride of Zen) advices asked - things to do/avoid
  243. DIY STEREO MIC-PREAMP for DSLR-Video
  244. Adjustable Linkwitz-Riley filter: Help needed with SPICE
  245. Variable active high pass filter .
  246. What advantage to use OP to summing signal ?
  247. Transformer malfunction??'
  248. Fader Penny Giles and Active Level control
  249. Is this filtering really needed ?
  250. Need help with ebay PHONO TURNTABLE PREAMP PREAMPLIFIER PCB DIY KIT

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