A very simple, but useful PCB. A power supply for the Muffsy Relay Input Selector (or anything else that can be powered by 5V DC/1A):
The instructions give you three alternatives for powering the Muffsy Phono Kits. Here's another one:
This step-down power module is available on Tindie, and can provide up to two amperes of power. Use two of them and connect a 15V DC power supply at VIN/GND as shown in the picture above, and you will...
Hot on the heals of the official Muffsy PCB, here comes another option.
Over at theslowdiyer's blog, you can now find the project files for the Muffsy Clone.
After receiving quite a few requests, it's now time for an upgrade of both the Muffsy Phono Preamp and the Power Supply. Both products are available on Tindie, right now!
You can finally build the complete Muffsy Phono Preamp, using the Muffsy Phono Preamp, the Hifi Power Supply and the Back Panel. J...
Both the Muffsy Phono Preamp and the Muffsy Hifi Dual Power Supply were both quarterfinalists in the Hackaday Prize 2015 contest.
Total Harmonic Distortion: 0.00081%Total Harmonic Distortion + Noise: 0.01935%Signal to Noise Ratio: 82.3 dB (0 dBV output)Intermodulation Distortion: 0.0195% (ITU-R)
Dynamic Range: > 110 dB (THD+N < 1%)
RIAA Compliance: +/- 0.15 dB (20-20.000 Hz)
RIAA Equalization: Passive
Gain at 1 kHz: 32-43 dB, in four steps
Input Impedance: 17k-150k ohm, in fifteen steps
Input Capacitance: Optional
PCB Size: 84 x 56 mm
Total Harmonic Distortion: < 0.1%
Total Harmonic Distortion + Noise: < 0.1%
Signal to Noise Ratio: 71.8 dB (rel to 0.5 mV input)
Intermodulation Distortion: 0.001% (ITU-R)
Dynamic Range: > 110 dB (rel to 0 dBV)
Frequency Response: +0 / -0.1 dB (20-20.000 Hz)
Gain: 24.6 dB
Input Impedance: 50-300 ohm, in four steps
PCB Size: 84 x 59.4 mm
Measurements at 1 kHz, 0 dBV output, if not stated otherwise
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