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VAC Sigma 170i Integrated Amplifier

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The new VAC Sigma 170i is the world’s first integrated amplifier with the patented iQ Continuous Intelligent Automatic Bias System. The iQ System holds the true idle point of the output tubes perfectly steady under all conditions, increasing detail & dynamics, lowering distortion & noise, prolonging tube life, and protecting the amplifier. Integrated amplifiers are a great lifestyle choice, and VAC lets you have all of the benefits of tubes without the worry.   With optional MM/MC phono and balanced inputs, the 85 watt/channel Sigma 170i is ready to be the heart of your high end musical experience. Features include:

  • Pure vacuum tube audio circuitry
  • 85 watts/channel into 4, 8, and 16 ohm speakers
  • Cinema bypass mode for tie in to home theater
  • Remote control
  • True Class A triode tube line stage
  • Pure analog volume control
  • Four inputs
  • Optional MM/MC phono with adjustable MC loading
  • Optional balanced input
  • Available glass/machined aluminum cage
  • Fascia available in black or silver metal flake paint
  • Hard chrome knobs and iQ display bar
  • Gold Lion KT88 output tubes
  • Premium Cardas RCA & speaker connectors
  • Hand made in the United States by VAC

Wattage

85 watts/channel

Power Bandwidth

13 Hz to 70 kHz

Inputs

Four line level inputs plus one Cinema Bypass input
Optional balanced input on Input 4
Optional MM/MC phono on Input 1

Outputs

Connections to precisely match loudspeaker loads of 4, 8 and 16 ohms

Tubes

4x KT88

5x 12AU7A

1x 12AX7A

Voltage

May be factory-configured for operation at 100, 120, 220, or 230/240 volts

Power Cord

Detachable power cord, standard IEC power receptacle

Remote Control

Volume & Mute, included

Finish

Hand-rubbed gold-flake gloss black lacquer fascia with chrome knobs standard.

Hand-rubbed metallic gloss silver lacquer fascia with chrome knobs special order with additional cost.

Warranty

Two years parts and labor, excluding tubes (USA, see manual for full details)

Dimensions (H x W x D)

8 x 18 x 17.3 in. (203 x 457 x 440 mm.)

Shipping Weight

71 lbs. (32 kg.)

Phono option:

Gain

37 dB MM
57 dB MC

Frequency Response

RIAA +/‑ 0.2 dB

Residual Noise

3 mV at output (S/N ratio approx. 69 dB)

Overload

117 mV @ 1 kHz = 8 volts RMS output; 460 mV @ 10 kHz

Variable loading

Yes for MC

Tubes

2x 12AX7A

Options add MM/MC phono option, add XLR balanced input option, add cage (mandatory for CE countries)

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