Preamplifier and high-to-low impedance converter

Thiscircuit matches the very high impedance of ceramic cartridges, unity gain, and low impedance output. By `loading` the cartridge with a 2M2 input resistance, the cartridge characteristics are such as to quite closely compensate for the RIAA recording curve.
Preamplifier and high-to-low impedance converter - schematic

The output from this preamp may be fed to a level pot for mixing.

Recommended videos

  • Adapting a speaker wire to a preamp rca adapter
    Duration: 8:32.
  • How to Add an Input Impedance Control to Any Mic Preamp
    Duration: 13:39.
  • EEVblog #629 - How To Design a Microphone Preamplifier
    Duration: 30:55.


  • Live Design
    Live Design His inquiries led him to the Focusrite RedNet suite of Dante™-networked converters and interfaces, which he recognized as the perfect idge from the church's existing analog sound system to the Danley® PA system they int
     15 February 2017
  • Live Design
    Live Design Leftwich deployed five speciality microphones, connecting them to five of the eight class-A mic on the rear of the Goliath. The microphones included two standup caliation mics at the front of the stage (110° and 7”
     10 February 2017
  • Herald-Whig
    Herald-Whig "I craft a recording experience in a concert hall, or in this case, a black box theater, by deploying a number of high-end capture solutions -- microphones, , software," he said. "I have to inform all that technical aspect from t
     10 February 2017
  • PSNEurope
    PSNEurope On show will also be the MZ 8060, a highly versatile digital matrix designed on a powerful DSP platform and based on advanced electronics, and the DPS 604X 4-channel Class D power amplifier, designed for professional use in install
     1 February 2017
  • Stereophile Magazine
    SI-300.2d integrated amplifierMy entrée to high-end was in the late 1990s, when I bought a used pair of Cary CAD-572SE tubed monoblock amplifiers to add to my Marantz CD player, Note M2 , and ProAc Response One SC loudspeakers. Th
     2 December 2016
  • Premier Guitar
    Premier Guitar Launches Hot Fuzz Dual-Stomp Boost/Fuzz PedalNorth Hollywood, CA (November 23, 2016) -- At the 141st AES Convention, BAE [AES booth 1101], a manufacturer known for its high-quality , equalizers, and compressors built to c
     1 October 2016
  • Stereophile Magazine
    Stereophile Magazine & NAP 140 power amplifierListening to each unit as part of the manufacturing process reflects Naim fundamental belief in the importance of the listening experience: Naim provides very few or no specifications on
     9 June 2016
  • Stereophile Magazine
    Technology Rex II line Early in 2015, I reviewed Simaudio's Moon Evolution 740P line ($10,000), and grew so enamored of its pleasures that I bought the thing. Since late summer, I've been listening to Balanced Technology's Rex II line ($
     30 December 2015
  • Stereophile Magazine
    4.6 PS has been such a company. Their new 4.6 , an update and cosmetic clone of the earlier, well-received 4.5, is not at the top of their range—that honor belongs to the 5.5—but it is clearly designed to be more than a price-
     8 August 2014