Measuring the actual Muffsy Phono stage reveals a very good RIAA compliance, with a little extra amplification of the bass.

THIS ARTICLE HAS BEEN UPDATED WITH IMPROVED MEASUREMENTS.

The specifications for the Muffsy Phono Preamp PP-3 states that the RIAA compliance is a miniscule +/-0.025 dB. That's ...

The previous blog post showed some noise measurements using a USB sound card. I just received a QuantAsylum QA400 audio analyzer (link), and got to do some real measurements.

The full Muffsy Phono Preamp specifications are as follows (using the Muffsy PSU, OPA2134 and the components that ship with th...

Here are some noise measurements of the Muffsy Phono Preamp PP-3.

As you'll see, the noise floor of the Muffsy Phono Preamp PP-3, powered by the Muffsy Hifi Dual Power Supply, is well below -100 dB. The average of all measured points, from 20-20.000 Hz is -107.74 dB and the highest single harmonic is...