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.
Pure vacuum tube audio circuitry
85 watts/channel into 4, 8, and 16 ohm speakers
Cinema bypass mode for tie in to home theater
True Class A triode tube line stage
Pure analog volume control
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