Blog tagged as vinyl

Ivo, who created the SMD version of the Muffsy Phono Preamp, has sent me a lot of nice pictures and a description of his project.

Here's what Ivo says about his project:

I wanted to build a compact turntable preamp with some adjusting capabilities such as gain, impedance and input  capacitance . So I ...

The Muffsy Phono Preamp is made to fit perfectly into a B0905 enclosure without any need for drilling or other modificatons. The back panel has to be made manually though, and here is the solution!

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...

Both the Muffsy Phono Preamp and the Muffsy Hifi Dual Power Supply were both quarterfinalists in the Hackaday Prize 2015 contest.

When you're going through the trouble of building something awesome, you should at least expect to be able to change it any way you'd like. Right?

Well get ready. The Muffsy Phono Preamp and Power Supply can be modified to suit your exact needs. Other gain levels? Check, Audiophile resistors, new ope...

The complete, start to finish build instructions for the Muffsy Phono Preamp are now available on http://muffsy.com/build-it.

That's right. All the resources you need to build a fully functional DIY hifi phono stage are here. Now anyone can enjoy their records the way they're supposed to.