Retro - Balanced RIAA Stage

Hi-Z (for high impedance cartridges)	Schematic	Parts List

Lo-Z (for low impedance cartridges)	Schematic	Parts List

Board Outline

The Retro is a balanced RIAA filter/gain stage for integrating vinyl into your balanced audio chain. Designed for MC cartridges, the Retro uses Texas Instruments OPA1632 fully-differential and OPA-1642 JFet-input op-amps, low-noise Dale RN55/CMF55 resistors, Wima and Dayton Audio MKP, and CD silver-mica capacitors.

While Retro is designed for balanced wiring or your cartridge, it will also support standard single-ended input wiring (by tying -IN to GND), and still provide balanced output.

You can read more about the Retro module on DIYAudio.

The Retro requires a 12-15V bipolar supply, such as our LCBPS or Placid BP.

Ordering Options
Kits
Retro "HI-Z" Complete Kit Stereo Pair (Two Mono Channels) Op-amps premounted	$75.00 USD
Retro "LO-Z" Complete Kit Stereo Pair (Two Mono Channels) Op-amps premounted	$75.00 USD	(Sold Out)
PCBs
Retro "HI-Z" Board Pair with Pre-Installed OpAmps [2] OPA1632 OpAmps (SOIC) Installed [4] OPA1642 OpAmps (SOIC) Installed	$56.00 USD
Retro "LO-Z" Board Pair with Pre-Installed OpAmps [4] OPA1632 OpAmps (SOIC) Installed [2] OPA1642 OpAmps (SOIC) Installed	$62.00 USD	(Sold Out)
Retro "HI-Z" Board Pair (no parts)	$26.00 USD
Retro "LO-Z" Board Pair (no parts)	$26.00 USD	(Sold Out)