VAC
Sigma 170i iQ
Introduced 2019$10,000 MSRP
Florida-built integrated amplifier rated at 85Wpc from push-pull KT88s, featuring VAC's iQ continuous automatic bias system. $10,000 base when reviewed by Stereophile in 2021; phono and XLR optional.
MSRP
$10,000
Used market · Excellent
$7,500
-25% vs MSRP
as of Aug 16, 2026MSRP to used market
From $10,000 at launch to $7,500 today.
Specifications
- Type
- Tube integrated amplifier
- Inputs
- 4 RCA line inputs (XLR optional), cinema bypass input, optional MM/MC phono
- Outputs
- Speaker taps for 2-4, 4-8, and 8-16 ohms; volume-controlled preamp out
- Topology
- Push-pull KT88 (two per channel) with iQ auto-bias; 12AX7 line/phono stages
- Power output
- 85W per channel into 4, 8, or 16 ohms
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