This page contains equations and a procedure for accurately computing the circuit component values for a phono preamp using active RIAA equalization. The circuit to be discussed is shown in Figure 1 below.

The phono preamp described here has an accurate RIAA equalisation curve, is very quiet, and offers better sonic performance than the vast majority of those seen in magazines and application notes.

6 days ago · Rega Aura: Rega's more affordable phono preamps are easy to recommend here, but even more accomplished is the brand's flagship high-end moving-coil offering. The impeccably built Aura MC phono stage costs £4000 and is fully adjustable, with terrific clarity and insight levels, impressive agility and expressive dynamics – it's hugely exciting ...

Jan 29, 2025 · Even the cheapest, oldest phono preamps should provide a signal that sounds at least nice and not lacking. The best and most accurate ones (and most expensive) would deliver an error of less than 0.5dB across the entire frequency range, and even better.

Nov 22, 2011 · The DIY version of the GrooveWatt tube RIAA phonograph preampamplifier. The Groovewatt RIAA phono preamp uses four 12AX7 (ECC83) tubes and a 12AT7 (ECC81). Total gain of the phono preamp is about 45 dB.

Aug 11, 2000 · This is a simple, one opamp phono preamp, but has a few added features. These are mainly for radio frequency (RF) suppression, and with the input circuit shown can be expected to be highly resistant to even high levels of RF interference.

May 12, 2021 · In this DIY project, Andrew C. Russell proposes the X-Altra, a highly refined Moving Coil/Moving Magnet RIAA EQ Preamplifier. This high-performance phono equalizer features an ultra-low noise LSK389B JFET from Linear Systems in the MM front end with switchable gain and resistive loading.

Phono Preamp Pro Preamplifier with RCA Input/Output, DIN Connection, RIAA Equalization, 12V DC Adapter - Compatible with Vinyl Record Players, Turntables, Stereos, DJ Mixers

6 hours ago · At $4,950, the Nagra Compact Phono is a "lower cost" high-end audio solution for getting the most out of your vinyl record listening experience.

2 days ago · The signal path has been simplified to the extreme to offer the quintessence of RIAA correction for the best MC cartridges. Phono reproduction was at the heart of our very first Hi-Fi product, the Nagra PL-P.