AFM70 Dark Titanium

AFM70

AFM70 Gold

AFM70 Gold

Power Monophonic Amplifier, Class A

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)
  • Zero Feedback
  • Pure Class A
  • Hybrid circuitry
  • 1 line input (RCA)
  • 1 balanced input (transformer)
  • Gain: 22dB
  • Input Sensitivity: 220mVrms for 1W/8 ohm (2.83Vrms); 1.87Vrms for 70W/8 ohm (24Vrms)
  • Input impedance: 47k
  • Valve used: 1x ECC82/12AU7
  • Dimensions: 34×48.5×19.5(h) cm
  • Weight: 30 kg