Power Amplifiers

PrimaLuna DiaLogue Seven Tube Monoblock Power Amplifier



PrimaLuna is a Dutch-based company that released its first products, the ProLogue One and ProLogue Two integrated tube amplifiers in 2003. Then, in 2006, they released the ProLogue Three preamplifier, and ProLogue Five, Six, and Seven power amplifiers. Late in that same year, the PrimaLuna DiaLogue series hit the market, which had the ProLogue's basic features, but with upgraded parts and additional capabilities. Here, we review the DiaLogue Seven, which is a monoblock power amplifier, capable of delivering 40 watts RMS in triode mode, and 70 watts RMS in ultra-linear mode (see The Design section for an explanation of what this means). The bottom line is that the PrimaLuna DiaLogue Seven monoblock is more than capable of delivering a clean, detailed, and lush sound (ah, those tubes are responsible for that).


  • Design: Class AB Tube Monoblock Power Amplifier
  • Power Output: 40 Watts RMS into 8, 4, or 2 Ohms in Triode Mode, 70 Watts RMS in Ultra-linear Mode
  • Tube Complement: Two 12AX7, Two 12AU7, Four KT88
  • Frequency Response: 10 Hz - 100 kHz, ± 3 dB
  • THD+N: 2% at Rated Output
  • S/N: 89 dB Unweighted
  • Input Impedance: 100 kOhms
  • Input Sensitivity for Full Output: 1.1 Volts
  • Inputs: One RCA
  • Adaptive AutoBias
  • Dimensions: 8.3" H x 15.2" W x 16" D
  • Weight: 64 Pounds
  • MSRP: $5,499/pair USA