Class A monoblocks power amplifier designed to deliver 70W into 8 ohms. It’s unique hybrid design combines a pure triode tube (ECC82/12AU7) with a solid-state power section. The amplifier operates in Pure Class A with Zero Feedback, ensuring exceptional naturalness and stability. It is built with an oversized 400VA transformer and over 100,000uF of filter capacitance, contributing to its exceptional performance. The AFM70 is capable of driving complex loads and is suitable for both single and multi-amplified systems while having prestigious looks.
The AFM70 monophonic amplifier is a Class A hybrid monophonic power amplifier that incorporates all the core principles of Riviera amplifiers: Zero Overall Feedback, a Hybrid design (valves for voltage amplification, solid-state devices for power), and Pure Class A operation. The AFM70 delivers 70W into 8 ohms in Class A (140W into 4 ohms) and is capable of driving loudspeakers with exceptional naturalness.
Voltage amplification is provided by a pure triode operating in Class A.
The power section employs 12 devices capable of dissipating 150W each.
The power section’s power supply, which uses an oversized transformer of over 400VA, makes use of a refined pigreco filter and distributed capacitance; the total filter capacity is over 100,000uF.
The deliberate absence of current-limiting systems ensures the amplifier’s stability even when dealing with complex loads.
The AFM70’s refinement and driving capabilities make it suitable for use in both single and multi-amplified systems.
Power: 70W (into 8 ohms)
Design: Zero Feedback, Pure Class A, Hybrid circuitry
Inputs: 1 line input (RCA), 1 balanced input (transformer)
Gain: 22dB
Input Sensitivity: 220mVrms for 1W/8 ohm; 1.87Vrms for 70W/8 ohm
Input Impedance: 47k
Tube: 1x ECC82/12AU7
Dimensions: 34×48.5×19.5(h) cm
Weight: 30 kg
Specifications
Power
70W (into 8 ohms)
Design
Zero Feedback, Pure Class A, Hybrid circuitry
Inputs
1 line input (RCA), 1 balanced input (transformer)
Gain
22dB
Input Sensitivity
220mVrms for 1W/8 ohm; 1.87Vrms for 70W/8 ohm
Input Impedance
47k
Tube
1x ECC82/12AU7
Dimensions
34×48.5×19.5(h) cm
Weight
30 kg
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