MUSICAL FIDELITY A1

Description

In Hi-Fi, the Musical Fidelity A1 has become one of the most classic designs – inside and out. First released back in 1985, it quickly made waves for being an absolute beast when it came to driving some of the heaviest speakers of the time, even though it was actually a fairly low powered integrated amplifier. But: everything is made in pure A class with excellent and expertly laid out discrete symmetrical circuit topology and using only the highest quality components. The A1 showed people that there is more to amplifiers than just high power.

25 W of pure power @ 8 Ohms
Discrete symmetric topology
Planar audio transistors with a maximum output of 25 A
Dynamic Class A, slides (NOT switches) smoothly into Class B, allowing more current as needed
Therefore, it drives heavy speakers without any problems
Fully independent left and right power supply
Each amplifier now has double the power supply capacity
Reduced transformer noise and heat dissipation
Filtered main stocks
The gain lock before the volume control can be completely bypassed using the "direct" switch
High quality and updated ALPS RK series potentiometer
Low noise TL071 JFET preamp circuit
Discrete current MM/MC phono input stage
Low-noise current-to-voltage converter for further amplification and RIAA equalization
Automatic input impedance matching (1K nominal) for MC along with increased gain
Original (1985) A1 layout and circuitry with modern improvements
Remote control added for volume
Modern updated low noise components