Performance to challenge all comers

The SIA-025 Mk.II represents a remarkable achievement in audio engineering, building on the legacy of the acclaimed SS-010. This fully integrated amplifier combines advanced circuitry with compact design, delivering exceptional performance without compromise.

Developed with meticulous attention to detail, the SIA-025 Mk.II leverages cutting-edge technology that has been refined and optimized for superior sound quality and minimal noise. A key design principle ensures no component operates beyond 25% of its capacity, dramatically enhancing longevity and reliability. With its sophisticated engineering and unwavering commitment to excellence, the SIA-025 Mk.II sets a new benchmark for integrated amplifiers.

A ground-breaking product that has astonished the industry

The SIA-025 Mk.II is a technical and critical triumph, offering a range of versatile features to meet the needs of discerning audiophiles. It includes five inputs (balanced and unbalanced), a preamplifier output for bi-amping, balanced speaker outputs, and a full bypass function for seamless integration with external surround processors.

This balanced, fully integrated amplifier upholds the exceptional standards expected of a high-end audio system. Combining stunning aesthetics with incredible performance, the SIA-025 Mk.II delivers an unrivaled listening experience, making it a standout choice for those who demand the best.

Finishing

The SIA-025 Mk.II is available in a stunning range of finishes to suit any style. Standard options include Pure White, Jet Black, and Warm Silver. For those seeking something more distinctive, popular custom finishes such as Titanium Orange, Dark Champagne, and Titanium Grey add a unique touch of elegance.

The Absolute Sound
https://www.theabsolutesound.com/articles/best-integrated-amplifiers-over-20000

“Conventional wisdom states that integrated amps are hopelessly compromised at birth. Vitus Audio obviously didn’t get this memo when it created the SIA-25. Built to the same Olympian standards as its preamps and amps, this 25Wpc Class A (on-the-fly switching to 100Wpc Class AB) integrated gives you the best of separates in a single chassis—liquidity, presence, a 3-D soundstage, and the finest gradations of timbre and dynamics.“

Input XLR analogue

• Available: 3 (L+R)
• Sensitivity: 2/4/8 VRMS
• Impedance: 10K?

Input RCA analogue

• Available: 2 (L+R)
• Sensitivity: 2/4/8 VRMS
• Impedance: 10K?

Output (Each Ch.) Speaker

• Available: 1
• Impedance: 0.075?
• Power WRMS (8?): ~25W Class A / ~150W Class AB
• Power WRMS (4?): ~50W Class A / ~300W Class AB
• Frequency response: +800kHz
• Signal to noise ratio: >100dB @ 1kHz
• THD + noise: <0.01%

Output (Each Ch.) Pre out

• Available: 1 (XLR)
• Impedance: 33?

Volume control

• Type: Relay controlled fixed resistor network
• Steps: -81dB to +11dB in 1dB steps

POWER CONSUMPTION

• Standby: <1W
• Class AB: 90W
• Class A: 162W

Dimensions

• Height: 135mm including feet
• Width: 435mm
• Depth: 436mm / 471mm with binding posts
• Weight: 37kg
• Material: Aluminium for body parts and heat sinks

Vitus Warranty Guide

SIA-025_Mk.II Information