Musical Fidelity A1 mk3 and B200 vintage amps measurements

[welwynnick]

I've got a soft copy of speaker tests somewhere. I'll see if I can dig it up.

 

[pierre]

I have just measured those two. The MF A1 has a cult following, and was designed by Tim de Paravicini

Here are the details:

1. Musical Fidelity A1 mk 3 (1994; 20W Class A amp according to the manufacturer), fully restored with modern parts:

Rated power (1% THD + N, 1 kHz) [W]

1 channel / 2 channels:

8 Ohm 14W / 14W
4 Ohm 9W / 9W

Sensitivity (for maximum power) [V] 0.25
Signal / noise ratio (A-weighted filter, with reference to 1W) [dB] 92
Dynamics [dB] 102
Damping factor (relative to 4 ohms) 17

2. Musical Fidelity B200 ( ca. 1994; 60W Class AB amp according to the manufacturer), original condition:







Rated power (1% THD + N, 1 kHz) [W]

1 channel / 2 channels:

8 Ohm 113W / 85W
4 Ohm 111W / 74W

Sensitivity (for maximum power) [V] 0.2
Signal / noise ratio (A-weighted filter, with reference to 1W) [dB] 71
Dynamics [dB] 91
Damping factor (with reference to 4 ohms) 34

I had one for a very long time. It was my first audiophile product bought with my first real salary. When compared to the recent class D class A or not it can definitely not compete on the transparency criteria.

Thanks for the measurements.