Since only one extra resistor value is needed to get the higher impedances, it's been added to the kit. Now you can choose between these two options.

The input impedances on the Muffsy MC Head Amp can be changed to your liking. To help you find the right values, here's a nifty input impedance ...

26.09.16 04:01 PM - Comment(s)

After a lot of testing, ordering of components, assembling kits, more testing and writing build instructions, the Muffsy MC Head Amp kit has finally launched!

If you're looking for a way to use low output MC cartridges with your Muffsy Phono Preamp, or any other MM phono stage, look no further! 
Get i...

21.09.16 12:36 PM - Comment(s)

It's done, it's built, it's the first of its kind, it's plugged in, it sings! 

No hiccups, no artifacts, it just works. It's playing the 40th anniversary "Crime of the Century" by Supertramp right now.

Sweet :)

This does mean that, with some effort, the kit will be ready in about two weeks. T...

18.09.16 11:14 PM - Comment(s)

That's right, the MC Head Amp made it to the front page of HACKADAY, which is a great honor!

Unfortunately, there's some confusion in the article and in the comments that I would like to address here.

18.09.16 01:07 PM - Comment(s)

Wondering how the Muffsy MC Head Amp measures? Look below for the numbers.

  • Topology: Dual mono
  • Gain: 24.6 dB
    • 0.3 mV input = 5 mV output
    • 0.5 mV input = 8.5 mV output 
  • Input impedance: 47 - 100 ohms, in four steps
  • THD: < 0.1 % *)
  • THD+N: < 0.6 % *)
  • SNR:  71.8 dB, referenced to 0.5 mV input @ 1 kHz
  • Frequen...
12.09.16 10:33 AM - Comment(s)