At first glance, the new VAC Phi 170 may seem like a typical 85 watt per channel stereo amplifier. Sure, it can be transformed into a 170 watt monoblock at the flick of a switch, and it has a fully balanced input mode, but the real breakthrough is inside, for the Phi 170 is equipped with the revolutionary patented* VAC iQ Continuous Automatic Bias System.

  • Type: Vacuum tube power amplifier with transformer coupled output
  • Features: VAC iQ Continuous Automatic  Bias System ™, Class A1 triode input & driver stages, Direct coupled input & driver stages, Low feedback design (6 dB), 12 volt trigger, Detachable power cord
  • Switch Settings: Fully balanced or single-ended input, Stereo or mono operation
  • Power Output: 85 watts/channel stereo continuous, 170 watts mono continuous
  • Speaker Matching Taps: 1-2 ohms, 2-4 ohms, 4-8 ohms
  • Frequency Response: 4 Hz to 71 kHz, +0/-3 dB
  • Full Power Bandwidth: 15 Hz to 63 kHz, +0/-3 dB
  • Residual Noise: Typically > 95 dB below rated output
  • Input Impedance: 200k Ohms, Stereo, Balanced, 100k Ohms, Stereo, Single Ended, 100k Ohms, mono, Balanced, 50k Ohms, mono, Single Ended
  • Gain: 30 dB, Stereo, Balanced, 33 dB, Stereo, Single Ended, 31 dB, Mono, Balanced, 34 dB, Mono, Single Ended
  • Output Polarity: Non-inverting. Balanced input is Pin 2 positive.
  • Tube Complement: 4 x type 6SN7, 4 x type KT88, Compatible with KT120, Compatible with KT150
  • Operating Voltages: Available factory set for 100, 120, 220, or 230/240 volt operation
  • Connectors: Cardas rhodium RCA jacks, Neutrik XLR jacks, Cardas rhodium binding posts
  • Dimensions: 17.8" W x 14.2" D x 8.5" H, 452 mm x 361 mm x 216 mm, Excluding connectors
  • Weight: 68 lbs., 31 kg
  • Origin: Designed & manufactured exclusively in the United States of America by VAC\f

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