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The pre-owned Classe Sigma AMP2 Stereo Power Amplifier, available at Len Wallis Audio, is crafted for hi-fi enthusiasts and audiophiles seeking quality audio at a great price.
In great condition with original packaging, this Sigma series amplifier delivers 300W per channel using switching technologies.
Visit our Lane Cove showroom to experience the Classe Sigma AMP2 or enquire online to enhance your audio setup.
Why Choose the Classe Sigma AMP2?
The pre-owned Sigma AMP2 offers dynamic audio performance, providing:
• Powerful Output: 300W RMS into 8Ω for driving speakers.
• High Efficiency: Switch-mode supply with over 1,000W capacity.
• Low Noise: -116dB SNR for pristine sound reproduction.
• Compact Design: Efficient layout for space-conscious setups.
• Great Value: Pre-owned quality at an affordable price.
Visit our Lane Cove showroom to explore how the Sigma AMP2 elevates your hi-fi system with our team’s expert guidance.
The Classe Sigma AMP2 Stereo Power Amplifier, in great condition with original packaging, delivers “clean, stable power,” per Classe Audio. Utilizing a Classé-designed switch-mode power supply with Power Factor Correction, it provides over 1,000W efficiently, per specifications.
With a frequency response of 1 Hz–100 kHz and harmonic distortion below 0.002% at 1 kHz, it ensures detailed sound. The 50kΩ input impedance and 29dB gain support versatile setups with a variety of gear. The Sigma AMP2 features balanced and single-ended inputs, with a low output impedance of 0.03Ω for speaker compatibility.
Weighing 47.7 kg, it’s built for durability.
Explore the Classe Sigma AMP2 at our Lane Cove showroom or enquire online. Have questions? Visit our contact page to connect with our Lane Cove-based team for personalised advice.
Technical Specifications
• Product Type: Stereo power amplifier (pre-owned)
• Condition: Great, with original packaging
• Output Power: 300W RMS into 8Ω (24.8 dBW), all channels driven
• Frequency Response: 1 Hz–100 kHz, -3 dB
• Harmonic Distortion:
This is ambitious: at A$3,250, it sits above the 75th percentile of the recent comparable asking prices you gave me, so it’s not a bargain on price alone. Unless this one has standout provenance, recent servicing, or extra value in the form of accessories and original packaging, I’d want some negotiating room.
That said, the Sigma AMP2 is a very well-regarded Classé power amp: clean, controlled, and effortlessly refined, with enough grip to suit demanding speakers. If the unit is genuinely healthy and cosmetically tidy, it can still be a worthwhile buy for someone who wants that Classé presentation and is happy to pay a premium for it. I’d just confirm service history and listen for channel balance, noise, and relay/startup behavior before committing.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Classé Audio emerged from Canada in 1979, founded by music enthusiast Mike Viglas in partnership with engineer David Reich. Frustrated by unreliable high-end electronics during a demonstration, Viglas sought superior performance, leading to the company's debut product: the DR-2, a 25-watt-per-channel Class A stereo amplifier launched in 1980. This pure Class A design not only inspired the brand's name but also established its early reputation for open, natural sound and unwavering reliability, with headquarters just outside Montréal.
The brand specializes in high-performance electronics, excelling in amplifiers, preamplifiers, integrated amplifiers, and processors for both music and home theater systems. Early models set the tone for authoritative power delivery, evolving into robust units delivering 250-300 watts per channel while maintaining sonic finesse. Classé has consistently prioritized no-compromise research and manufacturing, focusing on components that deliver theater-grade dynamics and musical precision without venturing into speakers, turntables, DACs, headphones, or cables.
Positioned firmly in the high-end market, Classé commands respect among discerning audiophiles for its Canadian heritage and build quality, once handcrafted in Quebec. Acquired by the B&W Group in 2001 and later by Sound United in 2018, it remains a benchmark for reliable, powerful electronics that prioritize longevity and uncolored reproduction, appealing to buyers seeking investment-grade hi-fi.
See all Classé listings on RADAR.
